CN201355429Y - 12 digital display electronic watch chip with analog-digital watch and back light function - Google Patents

Abstract

The utility model relates to a 12 digital display electronic watch chip with analog-digital watch and back light function, which comprises a power on reset module (A1), a back light driving module (A2), a voice driving module (A3), a reference voltage module (A4), a voltage-multiplying module (A5), a crystal oscillating module (A6), a frequency divider module (A7), a control module (A8), a counter module (A9), an electric motor driving module (A10) and a liquid crystal display decoding and driving module (A11). The power on reset module (A1) provides power on reset pulse for each module. The back light driving module (A2) provides a driving signal for back light. The voice driving module (A3) provides a voice driving signal. The control module (A8) respectively control the work of the electric motor driving module (A10) and the liquid crystal display decoding and driving module (A11). The utility model integrates the 12 liquid crystal digital display, the analog-digital watch which can adjust pulse width automatically and the back control drive. The utility model has the advantages of multiple functions, low cost, small consumption and high reliability.

Description

12 figure places show the electronic watch chip of band hand-manipulating of needle table and backlight function

Technical field

The utility model relates to the electronic watch chip that a kind of 12 figure places show band hand-manipulating of needle table and backlight function.

Background technology

The display device of accutron comprises the mechanical indicating mode of pointer dial type in the market, also comprises digital display modes such as utilizing light-emitting nixie tube or liquid crystal.Because people see the difference of table custom, the custom numeral that has shows, what have then is accustomed to pointer dial type, single numeral shows or the pointer dial type deixis is too dull and when under the situation of light condition difference, being difficult to read, can not satisfy the diversified demand of people.Multiple functions such as ten binary digits show in order to possess simultaneously, pointer dial type is indicated and backlight, 12 figure places show the electronic watch of band hand-manipulating of needle table and backlight function on the market, generally realize by two chips, one is that 12 simple figure places show electronic watch chip, and another is simple pointer watch chip.Because the operating voltage of two chips is different, therefore need two button cell power supplies, so cause complex manufacturing technology, the cost height, great number of issues such as poor stability make this class wrist-watch be difficult to popularize on market.

Summary of the invention

The utility model provides a kind of 12 figure places simple in structure, the high and low power consumption of reliability to show the electronic watch chip of band hand-manipulating of needle table and backlight function at the problems referred to above.This chip has that 12 liquid crystal digitals show, multiple function such as the hand-manipulating of needle table of regulating impulse width and backlight control driving automatically.

The purpose of this utility model is achieved in that the utility model comprises electrification reset modules A 1, backlight drive modules A 2, sound driver modules A 3, reference voltage modules A 4, multiplication of voltage modules A 5, crystal oscillator modules A 6, allocator module A7, control module A8, counter module A9, motor drive module A10 and liquid crystal display decoding and driver module A11, and described electrification reset modules A 1 links to each other with backlight drive modules A 2, allocator module A7, control module A8, counter module A9 respectively; Allocator module A7 links to each other with electrification reset modules A 1, backlight drive modules A 2, reference voltage modules A 4, multiplication of voltage modules A 5, crystal oscillator modules A 6, control module A8, counter module A9, liquid crystal display decoding and driver module A11 respectively, and is subjected to 1 control of electrification reset modules A; Reference voltage modules A 4 also links to each other with crystal oscillator modules A 6, and control module A8 also links to each other with liquid crystal display decoding and driver module A11 with counter module A9 respectively, and is subjected to 1 control of electrification reset modules A; Counter module A9 also links to each other with liquid crystal display decoding and driver module A11, and is subjected to 1 control of electrification reset modules A; Sound driver modules A 3 links to each other with allocator module A7, counter module A9; Motor drive module A10 links to each other with electrification reset modules A 1, counter module A9 respectively, motor drive module A10 mainly is made up of motor-driven waveform generating circuit, rotation circuit for detecting, output control circuit, the output of motor-driven waveform generating circuit connects the input of output control circuit, rotates circuit for detecting and links to each other with motor-driven waveform generating circuit, output control circuit respectively.

Technique effect of the present utility model is: the utility model is at the deficiency of existing wrist-watch chip, with 12 liquid crystal digitals show, backlight control drive accutron chip and automatically the pointer watch chip of regulating impulse width be integrated in one, only need a button cell power supply, has the advantage that cost is low, power consumption is little and reliability is high, this multifunction electronic wrist-watch chip has remedied the defective of general wristwatch function singleness, can satisfy the different table of seeing of people is accustomed to, and can under the dark situation of light, see table, made things convenient for people's use, be fit to generally promote.

Below in conjunction with drawings and Examples the utility model is further described.

Description of drawings

Fig. 1 is the structured flowchart of the utility model embodiment.

Fig. 2 is the circuit diagram of the utility model embodiment control module.

Fig. 3 is the working timing figure of the utility model embodiment control module.

Fig. 4 is the module map of the utility model embodiment control module digital watch state of a control and decoder module.

Fig. 5 is the operational mode status figure of the utility model embodiment liquid crystal digital matrix section.

Fig. 6 is the circuit diagram and the sequential chart of the utility model embodiment backlight drive module.

Fig. 7 is the structured flowchart of the utility model embodiment motor drive module.

Fig. 8 is the motor-driven waveform generating circuit figure of the utility model embodiment.

Fig. 9 is that the motor of the utility model embodiment rotates circuit for detecting figure.

Figure 10 is the motor output control circuit figure of the utility model embodiment.

Figure 11 is control timing Fig. 1 of the utility model embodiment.

Figure 12 is control timing Fig. 2 of the utility model embodiment.

Figure 13 is control timing Fig. 3 of the utility model embodiment.

Embodiment

Referring to Fig. 1, Fig. 1 is the structured flowchart of the utility model embodiment.A1 is the electrification reset module, produces the high level pulse of a microsecond level when powering on, and is used for resetting to entire chip, makes the chip status initialization.A2 is the backlight drive module, and its principle of work is identical with common backlight luminescence circuit, and IND and DIS port output pulse cooperates external circuit when pressing the L key, makes backlight luminous.A3 is the sound driver module, and when circuit needed output sound signal, the piezo that is connected between ALA port and the VDD was sent the corresponding sound under the driving of ALA port output frequency.A4 is the reference voltage generation module, and what be used for producing a relative positive source and be 1V pressure reduction digitally comes HFS power supply to crystal oscillator modules A 6 and frequency division module A7, to reduce the power consumption of circuit.A5 is half volt circuit module, cooperates the voltage of a 1.5V of F1K and CAP external capacitor generation, the usefulness of the brilliant driving of feed flow.A6 is the crystal oscillator module, cooperates the external crystal oscillator of OSCI and OSCO pin to produce former shaking and is the standard clock signal of 32768HZ.A7 is an allocator module, is used for above-mentioned standard signal is carried out frequency division in proper order, cooperates required various timing waveforms and the sequential clock of control signal generation circuit work of control module A8.A8 is a control module, different operating by external M, S, D three buttons comes the state of control operation state machine, embodies intuitively on external liquid crystal, piezo and cold light film in conjunction with the duty of allocator module A7, counter module A9 and liquid crystal display decoding and driver module A11 control entire circuit and with the result.A9 is a counter module, under the control of control module, and record or adjust a second counter, minute counter, quarter-bell minute counter, hour counter, quarter-bell hour counter, daily counter, week counter, month counter and stopwatch counter.A10 is a motor drive module, can regulate the pulse of pulsewidth automatically with what the motor drive signal of counting module A9 input was converted into MT1 that drive stepping motor rotates and MT2 pin.A11 is liquid crystal display decoding and driver module, the unlike signal of counter is converted into the drive signal of corresponding SEG and COM, make the corresponding information of liquid crystal display, output terminal COM1～COM3, the SEG1～SEG27 of liquid crystal display decoding and driver module is connected with the respective foot of LCDs respectively.

Referring to Fig. 2, Fig. 2 is the schematic diagram of control module.DIV is an allocator module among the figure, and the former frequency division that shakes of the 32768HZ that the crystal oscillator module is provided becomes the required a series of clock signal of the utility model work.N pipe 6 is an active pull-up, when having operation, the D key do not pull into low level with under it, it and Sheffer stroke gate 5, phase inverter 7, phase inverter 8, T trigger 9, T trigger 10 have constituted the button sample circuit together, are responsible for the valid function of D button is converted into the impulse response of keyD.Door aoi21 (1), Sheffer stroke gate 2, T trigger 3 and phase inverter 4 have constituted the button delay circuit.Digital watch control state machine and decoder module 12 are being controlled the duty of the utility model digital watch part, operation by M, S, D three buttons, can change the state of the internal state machine of digital watch control state machine and decoder module 12, through the decoding of inner decoding module, finally control the duty of whole digital watch.10 counters 15 also have been connected to digital watch counting module 13 simultaneously, the logic upset are provided for the second segment count of digital watch.Digital counter module 13 is given liquid crystal display decoding and driver module 14 with the data of different counters under the control of digital watch control state machine and decoder module 12, make the current state of the synchronous display chip of liquid crystal.

Referring to Fig. 3, Fig. 3 is the working timing figure of control module.In sequential chart shown in Figure 3, por is power-on reset signal, alarm for ringing the signal that makes a noise, F64 is that 64HZ clock signal, F32 are that 32HZ clock signal, D are that D button operation signal, keyD are that D key response signal, delay are that button time delayed signal, F1 are that 1HZ clock signal, sec10 are that 10 seconds energizing signals, sec20 are that 20 seconds energizing signals, adjust are that button carry signal, adv are clock carry signal when walking, and they are corresponding with the signal of the same name among Fig. 2 respectively.When por and alarm are low level.When pressing the D key, keyD produces the low pulse signal of a 32HZ, and a button carry pulse appears in adjust, shown in arrow among the figure 1 and arrow 2.When length was pressed the D key above 2 seconds, delay became low level by high level, and the carry pulse signal of 32HZ appears in adjust simultaneously, and is as shown in arrow 3.When the slow 20S of counter meter, sec10 and the upset of sec20 signal, a carry pulse appears in adv, and is as shown in arrow 4.More than be the utility model button carry and whole sequential relationships of carry when walking.

Referring to Fig. 4, Fig. 4 is the module map of digital watch control state machine and decoder module among the utility model control module A8.Control module A8 comprises key scan module B1, host state machine C1, sub-state machine D1, D2, D3, E1 and state decode module F1.Key scan module B1 is converted into corresponding pulse signal and level signal with the button operation of M, S, D key, is used for controlling the state of each state machine.Host state machine C1 is controlling the different working modes of whole table, and its state is corresponding real-time time pattern, stopwatch pattern, alarm clock mode, calendar mode respectively.The state of sub-state machine D1 corresponding respectively the second under the calendar mode pattern is set, hour pattern is set, divides the pattern that is provided with, 12/24 hour translative mode, moon was provided with pattern, day pattern is set, week pattern is set.The state of sub-state machine D2 corresponding respectively the stopwatch pattern, open the stopwatch pattern, stop stopwatch pattern, stopwatch reset mode.The state of sub-state machine D3 corresponding respectively alarm mode, quarter-bell pattern, quarter-bell branch hour are set the open and close of giving the correct time of pattern, quarter-bell and integral point are set pattern is set.The state of sub-state machine E1 corresponding respectively quarter-bell close integral point give the correct time " shut " mode", quarter-bell open integral point give the correct time " shut " mode", quarter-bell close integral point give the correct time open mode, quarter-bell close the integral point open mode that gives the correct time.State decode module F1 is decoded into the duty that control signal corresponding is controlled interlock circuit with the current state of host state machine C1, sub-state machine D1, D2, D3, E1.

Referring to Fig. 5, Fig. 5 is the concrete operations process flow diagram of liquid crystal display digital watch part in the utility model.Its concrete operations are as follows:

Change display mode: the original state that powers on is the real-time time pattern; Press the M key, enter the stopwatch pattern; Press the M key again, enter alarm mode; Press the M key again, enter calendar mode; Press the M key again, turn back to the real-time time pattern.

The stopwatch pattern: under the stopwatch pattern, pick up counting by the D key, again by the D key then timing stop, pressing the zero clearing of S key stopwatch.If just enter other patterns by the M key under the situation in timing at stopwatch, stopwatch will be still in the backstage timing.

Quarter-bell is provided with: under alarm mode, enter by D and integral point to be set to give the correct time and the quarter-bell switching mode, integral point gives the correct time and the quarter-bell default conditions are and close, press the D key and open quarter-bell, close quarter-bell and open integral point by the D key again and give the correct time, press the D key again, open integral point and give the correct time and quarter-bell, give the correct time by D key integral point again and quarter-bell is all closed, press the D key again and circulate according to above-mentioned order.Enter quarter-bell hour setting by the S key, quarter-bell hour corresponding numeral flicker increases progressively by the D key and changes the quarter-bell hourage; Enter quarter-bell minute setting by the S key again, quarter-bell minute corresponding numeral flicker increases progressively by the D key and changes quarter-bell minute;

Calendar is provided with: under calendar mode, enter by the S key and second to be provided with, second corresponding numeral flicker is pressed the D key again and is counted zero clearing second; Enter a hour setting by the S key again, hour corresponding numeral flicker increases progressively the change hourage by the D key again, and can carry out conversion in 12/24 hour; Enter a minute setting by the S key again, minute corresponding characters flicker increases progressively change the number of minutes by the D key again; Enter the month setting by the S key again, month corresponding characters flicker increases progressively by the D key and changes a month umber; Enter a day setting by the S key again, day corresponding characters flicker increases progressively the change number of days by the D key again; Enter the week setting by the S key again, week corresponding characters flicker increases progressively by the D key and changes week; Then turn back to a second setting by the S key again.

Annotate: when being provided with, increase progressively by the D key, if when pinning the D key and surpassing 2 seconds, the numeral that change will increase with the speed under the per second 8.Press the M key among the figure, be meant by button operation by the S key with by the D key M, S or D are connect positive source.In above-mentioned stopwatch pattern, calendar setting and quarter-bell setting up procedure, if in two minutes without any button operation, this table is with the newly-installed value of automatic reception and return the real-time time state.

Backlight function realizes that by backlight module A2 backlight module A2 is the control of the uncontrolled module of standalone feature module, by its duty of L key control.Referring to Fig. 6, Fig. 6 is the schematic diagram and the sequential relationship figure of backlight drive modules A 2.N pipe 144 is an active pull-up, does not pull into low level with under it when the L key has operation.RC oscillator 47 is for enabling the RC oscillator, and when EN was high level, the RC oscillator provided the oscillation frequency of about 320K, and when EN was low level, the RC oscillator quit work.Frequency divider 548 is 16 frequency dividers, and circuit reset when the RST signal is low level when RST is high level, carries out 16 frequency divisions with the clock signal of input, 1/16 clock signal that output duty cycle is 15/16, frequency is primary frequency.N pipe 144, RC oscillator 47, frequency divider 548 have constituted backlight drive circuit with phase inverter 245, phase inverter 346, Sheffer stroke gate 649, buffer750, buffer851, buffer952, phase inverter 1053, Sheffer stroke gate 1154, phase inverter 1255, Sheffer stroke gate 1356, buffer1457, buffer158, buffer1659, and its main effect is to hold to peripheral circuit by IND and DIS corresponding clock signals and suitable driving force are provided.In timing diagram, L is that backlight key, clk1 are that dutycycle is that 1: 3 512HZ clock signal, clk2 is that dutycycle is that 1: 1 512HZ clock signal, clk3 is that dutycycle is 15/16 20KHZ clock signal (when the L key is pressed).When the L key was not pressed, RC oscillator 47 was not worked, and frequency divider 548 remains reset mode, and clk3 is a high level, and IND and DIS are low level.When the L key is pressed, RC oscillator 47 vibration also provides the clock signal of 320K, frequency divider 548 is also started working and the clock signal that RC provides is carried out frequency division, it is 15/16 that dutycycle is provided, frequency is the clock frequency signal clk3 of 20K, at this moment, under the common cooperation of clk1 and clk2, IND and DIS export the needed frequency of work backlight, constantly the Push And Release of the triode of control peripheral circuit comes to discharge and recharge to inductance, utilizes the time-delay characteristics of inductance, high pressure tens volts of backlight two ends generations makes backlight luminous.

Automatically regulating impulse width hand-manipulating of needle table function is realized by motor drive module, motor drive module is the control of the uncontrolled module of standalone feature module, power on the back by its work of RST input control whether, only RST when being low level motor drive module just work.

Referring to figure, Fig. 7 shows the structured flowchart of motor drive module, tells about the structure and the effect of every part below in detail.

Referring to Fig. 8, Fig. 8 shows the circuit diagram of motor-driven waveform generating circuit G1, and its major function is the waveform that the feedback signal EHANCE_DISABLE combination generation of the signal of the various frequencies of frequency dividing circuit output and rotation circuit for detecting is used to control output control circuit and rotation circuit for detecting." 256Hz " is 256 hertz clock signal, and " 64Hz " is 64 hertz clock signal, and they are used for producing signal " 36 " control from beginning to be driven into the time span (as Figure 12 2) that begins to detect." 1Hz " is that 1 hertz clock signal is used to control the frequency that entire circuit produces drive controlling and coherent signal." 1024Hz_1 " is 1024 hertz clock signal, " 1024Hz_2 " is " 1024Hz_1 " clock signal through 1/4 cycle delay, the signal " 38 " that produces is used to generate on signal GP1, the GP2 control motor driven port and draws PMOS (P1, P2) unlatching, the signal of generation " DETECT_EN " are used to control enabling of rotation circuit for detecting." 128Hz " is that 128 hertz clock signal produces the width (as among Figure 12 3) of signal " 40 " control driven pulse with " 256Hz "." 32Hz " is 32 hertz clock signal, is used for producing the width (as Figure 12 5) that signal " 45 " control replenishes driving pulse." 16Hz " is 16 hertz clock signal, is used to produce the clear terminal of signal " 46 " control RS latch." 42 " are to replenish the driving pulse reset signal, be high level at ordinary times, after rotor successfully rotates 180 °, because the variation of feedback signal " ENHANCE_DISABLE ", can produce a low level negative pulse on " 42 ", " DFF1 " can be cleared at this moment." DFF1 " and " DFF2 " is d type flip flop, is used to preserve the enable signal of additional driving pulse of the current and next cycle of rotor.Signal " 37 " has comprised that the control signal of driven pulse and additional driving pulse is used to generate signal " GP1 ", " GP2 ", " GN1 ", " GN2 ".

Referring to Fig. 9, the circuit diagram that rotates circuit for detecting G2 has been shown among Fig. 9, rotating the circuit for detecting major function is fixedly in the period motor-driven end to be sampled with fixed frequency the back at interval at driven motor certain hour, and the result that will sample outputs on the feedback signal ENHANCE_DISABLE." DETECT_EN " is effective enable signal of high level Mei after Walk advances motor and is driven after the certain hour, a string frequency is that 1024 hertz, dutycycle are that 1: 2 pulse meeting outputs to " DETECT_EN " and goes up (seeing Figure 12), (OUT1's circuit OUT2) samples to above-mentioned stepper motor two ends when pulse is high level.When foregoing circuit Cai Ji when Walk advances the feature that rotor rotates, can go up in feedback signal " ENHANCE_DISABLE " and produce a low level pulse.Above-mentioned low level pulse can output to motor-driven waveform generating circuit G1, make its motor-driven pulse that can not produce reinforcement output, and at once enable signal DETECT_EN is changed to low level, no longer exports pulse (seeing Figure 11) at this electric motor driven cycle.Never collect the feature that motor rotates if rotate circuit for detecting between " DETECT_EN " is for high period, then " ENHANCE_DISABLE " can keep high level always.Therefore, motor-driven waveform generating circuit G1 can produce the driving pulse (seeing Figure 12) of a reinforcement again after the 15.625ms of output driven pulse, even and detect the motor rotation feature but still can produce the driving pulse of a reinforcement after the 15.625ms of normal length motor-driven pulse when motor-driven next time.That is to say if after normal motor drives, do not detect the motor rotation feature, motor-driven waveform generating circuit G1 can be after this and next normal motor drive each driving pulse that increases the output reinforcement export.

Referring to Figure 10, the circuit diagram of output control circuit G3 has been shown among Figure 10, output control circuit outputs to the motor-driven input end to the motor-driven waveform in turn by certain frequency.Frequency when pointer is walked in the present embodiment is decided to be 1 hertz, therefore output control circuit carries out the frequency division of afterbody to 1 hertz clock input signal " 1Hz ", positive and negative according to " TFF1 " frequency division output, waveform in conjunction with input " 37 ", " 38 ", " 39 " drives OUT1, OUT2 in turn by the control to PMOS P1, P2 and NMOS N1, N2, and then realizes stepper motor 1 time driving in 1 second.Become the output of 0.5 clock by 1 hertz behind clock signal " 1Hz " the process T trigger, its positive output " 0.5Hz_B " and negative output " 0.5Hz " enable the control signal of two motor-driven output ports respectively.When " 0.5Hz " is high level, the control signal of motor-driven output port OUT1 is enabled, the drive waveforms of " 37 ", " 38 ", " 39 " is output on the OUT1, and the control signal conductively-closed of OUT2 at this moment, OUT2 keeps high level state (as Figure 12) always.Vice versa, when " 0.5Hz_B " was high level, the control signal of motor-driven output port OUT2 was enabled, and the drive waveforms of " 7 ", " 8 ", " 9 " is output on the OUT2, and the control signal conductively-closed of OUT1 at this moment, OUT1 keeps high level state (as Figure 13) always." RESET " is power-on reset signal, and whole output control circuit quits work when it is high level.The rotation of the folding control step motor of PMOS (P1, P2) and NMOS (N1, N2).Work as GP1, GN1 is a low level, GP2, and when GN2 was high level, electric current passed through motor from left to right.Vice versa, when GP2, GN2 are low level, when GP1, GN1 are high level.Go round and begin again, the pointer that rotor drives will not stop makes circular motion.The folding of PMOS control end GP3, GP5 is to be used for cooperating the rotation circuit for detecting to gather the motor rotation feature, after driving OUT1, rotating detecting during the cycle (among Figure 12 " 4 "), PMOS P3, P2 open and NMOS N1, N2, P1, P5 by the time, the induced current that produces after the rotor rotation can induce negative voltage on OUT1.In like manner, after driving OUT2, rotating detecting during the cycle, PMOS P1, P5 open and NMOS N1, N2, P2, P3 by the time, the induced current that produces after the rotor rotation can induce negative voltage on OUT2.After the character voltage of above-mentioned OUT1, OUT2 is rotated the circuit for detecting sampling, convert the variation of feedback signal " ENHANCE_DISABLE " to through logical combination, judge whether success of step motor drive by the motor-driven waveform generating circuit, as the foundation of whether replenishing intensification pulse.

Claims (3)

1. a figure place shows the electronic watch chip of being with hand-manipulating of needle table and backlight function, comprise electrification reset module (A1), reference voltage module (A4), multiplication of voltage module (A5), crystal oscillator module (A6), allocator module (A7), control module (A8), counter module (A9), motor drive module (A10) and liquid crystal display decoding and driver module (A11), described electrification reset module (A1) links to each other with allocator module (A7), control module (A8), counter module (A9) respectively; Allocator module (A7) links to each other with electrification reset module (A1), reference voltage module (A4), multiplication of voltage module (A5), crystal oscillator module (A6), control module (A8), counter module (A9), liquid crystal display decoding and driver module (A11) respectively, and is subjected to electrification reset module (A1) control; Reference voltage module (A4) also links to each other with crystal oscillator module (A6), and control module (A8) also links to each other with liquid crystal display decoding and driver module (A11) with counter module (A9) respectively, and is subjected to electrification reset module (A1) control; Counter module (A9) also links to each other with liquid crystal display decoding and driver module (A11), and controlled by electrification reset module (A1), motor drive module (A10) links to each other with electrification reset module (A1), counter module (A9) respectively, it is characterized in that: motor drive module (A10) mainly is made up of motor-driven waveform generating circuit, rotation circuit for detecting, output control circuit, the output of motor-driven waveform generating circuit connects the input of output control circuit, rotates circuit for detecting and links to each other with motor-driven waveform generating circuit, output control circuit respectively.

2. 12 figure places according to claim 1 show the electronic watch chip of band hand-manipulating of needle table and backlight function, and it is characterized in that: also comprise backlight drive module (A2), backlight drive module (A2) links to each other with electrification reset module (A1).

3. 12 figure places according to claim 1 show the electronic watch chip of band hand-manipulating of needle table and backlight function, and it is characterized in that: also comprise sound driver module (A3), sound driver module (A3) links to each other with allocator module (A7), counter module (A9).

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