CN207968461U - temperature sensor output data format conversion circuit - Google Patents

Abstract

Temperature sensor output data format conversion circuit, is related to digital circuit technique.The utility model includes 16 concatenated register cells, format multiple selector and tri-state BUF；Each register cell includes a multiple selector and a d type flip flop, the first input end of format multiple selector connects the ends D of the d type flip flop in the 15th register cell, second input terminal of format multiple selector connects the ends Q of the 16th register cell, the control terminal linking format type control signals input terminal of format multiple selector；The output end of the input terminal linking format multiple selector of tri-state BUF, the output end of tri-state BUF is as final output end.The utility model can realize various temperature output data format in a chips, reduce development cost, accomplish to plug alternative, improve the durability of original program module.

Description

Temperature sensor output data format conversion circuit

Technical field

The utility model is related to digital circuit techniques.

Technical background

Sensor is the important basic component part of information-based industry, is broadly divided into temperature sensor, pressure sensor, stream Measure sensor/sensor, horizon sensor and biosensor etc..Wherein temperature is a very important measurement and control parameter, With being constantly progressive for integrated circuit technology, single chip digital thermometer sensor is first device in temperature-sensing element and auxiliary circuit Part is integrated on same chip, have application it is simple, cheap, small, high sensitivity, low in energy consumption, time constant is small, The advantages that integrated level height and strong antijamming capability, is widely used in military project, space flight, automotive electronics, household electrical appliances, medical treatment, IT, special type are set It is standby and consumer etc..

During temperature sensor continues to develop, the ununified standard of format of temperature sensor data output, respectively The output data format of a producer is inconsistent.When developer's temperature in use sensor, it is necessary to for it is every it is a develop it is corresponding Output data conversion program.

Invention content

The technical problem to be solved by the utility model is to provide a kind of mould temperature sensor output data format conversion electricity Road can realize that same temperature sensor is compatible with multiple data output formats, support MAX6627 and ADT7301 data formats Conversion.

The utility model solve the technical problem the technical solution adopted is that, temperature sensor output data format conversion Circuit, which is characterized in that including 16 concatenated register cells, format multiple selector and tri-state BUF；

Each register cell includes a multiple selector and a d type flip flop, the first input end of multiple selector As the first input end of register cell, the data input pin of the second input terminal of multiple selector as register cell, The ends D of the output end connection d type flip flop of multiple selector, the output end of the ends Q of d type flip flop as register cell are previous to post The output end of storage unit is connected to the first input end of latter register cell, the output termination of the 16th register cell the The first input end of one register cell；One control signal input is connected to the control terminal of each multiple selector, at one Clock signal input part is connected to the ends CLK of each d type flip flop, and a CR signal input terminal is connected to the ends CR of each multiple selector；

The first input end of format multiple selector connects the ends D of the d type flip flop in the 15th register cell, and format is more Second input terminal of road selector connects the ends Q of the 16th register cell, the control terminal linking format of format multiple selector Type control signals input terminal；

The output end of the input terminal linking format multiple selector of tri-state BUF, the output end of tri-state BUF is as final output End.

The utility model has the beneficial effects that being easily achieved, various temperature output data can be realized in a chips Format reduces development cost, accomplishes to plug alternative, improves the durability of original program module.

Description of the drawings

Fig. 1 is the circuit diagram of the utility model；

Fig. 2 is the output data format schematic diagram of MAX6627；

Fig. 3 is the output data format schematic diagram of DAT7301.

Specific implementation mode

Referring to Fig. 1~3.

The utility model includes 16 concatenated register cells, format multiple selector (MUX16 in figure) and tri-state BUF (TBUF in Fig. 1)；Each register cell includes a multiple selector and a d type flip flop, and the of multiple selector First input end of one input terminal as register cell, the data of the second input terminal of multiple selector as register cell Input terminal, the ends D of the output end connection d type flip flop of multiple selector, the output end of the ends Q of d type flip flop as register cell, The output end of previous register cell is connected to the first input end of latter register cell, the output of the 16th register cell Terminate the first input end of the first register cell；One control signal input is connected to the control terminal of each multiple selector, One clock signal input terminal is connected to the ends CLK of each d type flip flop, and a CR signal input terminal is connected to each multiple selector The ends CR；

The first input end of format multiple selector connects the ends D of the d type flip flop in the 15th register cell, and format is more Second input terminal of road selector connects the ends Q of the 16th register cell, the control terminal linking format of format multiple selector Type control signals input terminal；

The output end of the input terminal linking format multiple selector of tri-state BUF, the output end of tri-state BUF is as final output End.

The course of work of the utility model is as follows：

16 shift registers are used for the transformed data of storage temperature sensor, and data format is according to ADT7301 Format stored.CP is clock signal, is connected to the input end of clock of each d type flip flop, and CR is reset signal, is connected to The ends CLR of each d type flip flop.When CR is low level, entire 16 shift registers are all reset.

Multiple selector MUX [0-15], which is used for selecting assigning initial value to 16 bit shift registers, still forms the deposit of 16 bit shifts Device chain.MUX [0-15] is controlled by INIT_CHAIN signals.When INIT_CHAIN be high level, into initialization 16 deposit The state of device；When INIT_CHAIN is low level, 16 registers of connection form 16 bit shift register chains.

It is used for controlling and realizing that output data format is converted by FORMAT_TYPE and DOUT_T signals.

When the data format of output ADT7301, FORMAT_TYPE and DOUT_T realize for high level.FORMAT_TYPE For high level, MUX16 multiple selector selects the output connection of D15, and DOUT_T is high level, and the output of MUX16 is directly connected to It is exported to DOUT.

When the data format of output MAX6627, FORMAT_TYPE first is low level, the selection of MUX16 multiple selector The output of D13 connects, and continuous 14 clocks, DOUT_T is high level, the value in DOUT Output Shift Registers；Next, when When low 15 and 16 clocks, DOUT_T is low level, and tri-state BUF exports high resistant.

It is replicated to 16 bit registers by INIT_CHAIN signals, the cooperation of FORMAT_TYPE and DOUT_T signals is real The selection of the data format of existing MAX6627 and the data format output of ADT7301.

Claims (1)

1. temperature sensor output data format conversion circuit, which is characterized in that including 16 concatenated register cells, formats Multiple selector and tri-state BUF；

Each register cell includes a multiple selector and a d type flip flop, the first input end conduct of multiple selector The first input end of register cell, the data input pin of the second input terminal of multiple selector as register cell, multichannel The ends D of the output end connection d type flip flop of selector, the output end of the ends Q of d type flip flop as register cell, previous register The output end of unit is connected to the first input end of latter register cell, and the output termination first of the 16th register cell is posted The first input end of storage unit；One control signal input is connected to the control terminal of each multiple selector, a clock letter Number input terminal is connected to the ends CLK of each d type flip flop, and a CR signal input terminal is connected to the ends CR of each multiple selector；

The first input end of format multiple selector connects the ends D of the d type flip flop in the 15th register cell, the choosing of format multichannel The second input terminal for selecting device connects the ends Q of the 16th register cell, the control terminal linking format type of format multiple selector Control signal input；

The output end of the input terminal linking format multiple selector of tri-state BUF, the output end of tri-state BUF is as final output end.