JPS60202380A - Electronic timepiece receiving rom data - Google Patents

Abstract

PURPOSE:To enable the operation of an electronic timepiece based on an external ROM data by transferring ROM data in serial and coinciding the voltage level of the electronic timepiece. CONSTITUTION:In an external data unit A, a signal is sent to a multiplexer 2 from an input circuit 1 by a desired switch operation to form a corresponding address selection signal, which is fed to a counter 3 and a ROM6 is address with the output thereof to send data therein in serial through a register 4. The ROM data is received with a level shift circuit 7 of an electronic timepiece B to be converted into a voltage data and stored into a RAM9 via a series/parallel conversion circuit 8. Thereafter, data in the RAM9 is processed with an operational circuit 10 and sent to a display circuit.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an electronic timepiece that operates using external data, particularly ROM data.

[Prior art]

Conventional electronic watches did not operate using ROM data from the outside. Also, when considering transferring external ROM data, a method of transferring ROM data in parallel can be considered, but when transferring via cable etc.
``Parallel transmission requires a large number of cores in the cable, which poses a problem in the case of small devices such as electronic watches, in that the connection part with the cable etc. becomes large. Also, the voltage level of ROM is 0 to 5V, but the voltage level of electronic clock is -5V.
There was a problem that the voltage level was different from V ~ 0. [Purpose] The present invention is intended to solve such a problem, and the purpose of the present invention is to convert ROM data into serial data, The purpose of the present invention is to provide an electronic clock that transmits data while matching the voltage level of the electronic clock and receives the transmitted data.

〔overview〕

The ROM data receiving electronic timepiece of the present invention includes an external data device that transmits external data, and an electronic timepiece that receives and operates the external data.
The electronic timepiece includes a ROM reading circuit for reading parallel data stored in an OM, a parallel-to-serial conversion circuit for converting the parallel data into serial data, and a data transfer circuit for transferring the serial data. A serial-parallel conversion circuit that receives and converts serial data transferred from an external data device into parallel data, a storage circuit that stores the parallel data converted by the serial-parallel conversion circuit, and an arithmetic circuit that operates according to the data stored in the storage circuit. It is characterized in that it is configured at least by: Further, the external data device converts the voltage level (0 to 5v) of the data of the data transfer circuit so that it matches the voltage level (-3v to 0) of the electronic watch, and transfers and receives the data. do.

〔Example〕

Hereinafter, the present invention will be described in detail based on examples.

The external data device A includes an input circuit 1 including switches a-n.
, multiplexer 2, address counter 5, register 4
, a clock generation circuit 5, and an externally connected ROM 6. Further, the electronic clock B includes a level shift circuit 7, a serial/parallel conversion circuit 8, a RAM 9, an arithmetic circuit 10,
It is composed of a display section 11 and a clock section 12. In the external data device A, when any switch among the JLs (1""JL) is pressed, the signal of the switch is waveform-shaped by the input circuit 1 and sent to the multiplexer 2.

The multiplexer 2 sends an address selection signal corresponding to the arbitrarily pressed switch to the address counter 3. Counts from the address corresponding to the address selection signal (switch a to h arbitrarily pressed)
Give address to OM6. The ROM 6 sends data to the register 4 in response to a read pulse sent from the clock generation circuit 5, and serially outputs data in response to an output pulse sent from the clock generation circuit 5. The serially outputted ROM data is received by the level shift circuit 7 in the electronic timepiece B, and the ROM data at a voltage level of 0 to 5v is converted to data at a voltage level of -3vNo. The level-converted ROM data is sent to the serial/parallel conversion circuit 8 and converted into parallel data. The ROM data converted into parallel data is sent to RAM'9 and stored.

The ROM data stored in the RAM 9 is sent to the arithmetic circuit 10 for processing as needed, and then sent to the display circuit for display.

〔effect〕

As described above, according to the present invention, in the electronic watch,
It is now possible to operate using external ROM data.

In addition, since data is transferred using serial data during ROM data transfer, the number of cable cores can be reduced to two.
The connection part with the electronic clock is now smaller and easier. Further, it has the effect that data can be transferred between ROM data having different voltage levels and the electronic watch. In addition, as another effect,
You can use multiple electronic clocks to play games while exchanging data with each other, or prepare a stopwatch, world time, etc. as ROM data, pull it out and use it as needed, connect it to a measuring device, etc., and output it. It can also be used as a device. It has the above effects.

[Brief explanation of the drawing]

FIG. 1 shows a block diagram for transferring ROM data to an electronic watch. A...External data device B...Electronic clock σ~h...Address selection switch...
Input circuit 2...Multiplexer 6...Address counter 4...L/register 5...Clock generation circuit 6...ROM 7... ... Level shift circuit 8 ... Serial-to-parallel conversion circuit 9 ... RAM 10 ... Arithmetic circuit 11 ... Display circuit and above

Claims (1)

[Scope of Claims] 1) An external data device that transmits external data, and a ROM reading circuit that reads parallel data stored in a ROM as the external data device in an electronic watch that receives the external data and operates. , comprising a parallel-to-serial conversion circuit that converts the parallel data to serial data, and a data transfer circuit that transfers the serial data,
The electronic timepiece includes a serial-parallel conversion circuit that receives serial data transferred from the external data device and converts it into parallel data, a storage circuit that stores the parallel data converted by the serial-parallel conversion circuit,
A ROM comprising at least an arithmetic circuit that operates according to data stored in the memory circuit.
Data receiving electronic clock. 2) Level-converting the data voltage level (0 to 5) of the data transfer circuit by the external data device to match the voltage level (-6v to 0) of the electronic watch and transmitting and receiving the data; A ROM data receiving electronic timepiece according to claim 1.