Timer apparatus capable of writing identical data to a plurality

Details Timer apparatus capable of writing identical data to a plurality Timer apparatus capable of writing identical data to a plurality

1994-08-12

1996-07-09

Kriess, Kevin A.

Electrical pulse counters, pulse dividers, or shift registers: c

Counting or dividing in incremental steps

Beam type tube

377 20, 377 52, 377107, 364934, 3649343, 364DIG2, H03K 2102

Patent

active

055353797

ABSTRACT:
A timer apparatus which is provided with a control circuit 80, annexed to each of timers 1-1, 1-2 and 1-3 generating a control signal making the register 3 write data outputted from a CPU 50 when both a write signal 5 generated by the CPU 50 for writing data into the registers 3, and a timer single write signal 11 for specifying any of the timers, are generated, and furthermore is provided with a selection circuit 70 making each control circuit 80 generate a control signal when both the write signal 5 and a timer grouping signal 14 generated for specifying each of the plurality of timers 1-1, 1-2 and 1-3, are generated. When it is necessary that identical data be held in the respective registers 3 of the plurality of timers 1-1, 1-2 and 1-3, the identical data can be written into each of the registers 3 at the same time.

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"8254 Programmable Interval Timer", Intel Microcomptuer Company, Peripherals, 1990, pp. 3-62 to 3-82.

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