Electronic timepiece having address designation circuits of ROM

Details Electronic timepiece having address designation circuits of ROM Electronic timepiece having address designation circuits of ROM

1983-06-02

1985-05-14

Miska, Vit W.

Horology: time measuring systems or devices

Electrical time base

G04C 1500

Patent

active

045168628

ABSTRACT:
In an LSI for an electronic watch having a ROM and a RAM, the content of the RAM is rewritten by the interpretation and execution sequentially for time counting control and other controls. The address designation method of the ROM comprises a Program Counter Method for designating the next instruction address to be executed by a program counter and for numerical computation, and a Next Address Designation Method for designating directly by a fixed field value in an instruction and for the software for the watch. The two methods are employed selectively by the kind of instructions so that an emit-field may be used for other purposes such as the operation of a value which extends over several words of the RAM as a single instruction.

REFERENCES:
patent: 4257116 (1981-03-01), Asano et al.
patent: 4386423 (1983-05-01), Sasaki et al.
patent: 4415271 (1983-11-01), Mori

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