TC9328AF datasheet(71/84 Pages) TOSHIBA

71 / 84 page

TC9328AF

2004-09-13

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Timer Port

The timer is equipped with 100-Hz, 10-Hz and 2-Hz F/F bits and used for counting clock operations and

tuning scan mode, etc.

Timer Port

The timer ports are accessed with the OUT2/IN2 instructions for which [CN = 6H] has been specified in

the operand

Timer Port Timing

The 2-Hz timer F/F is set with the 2-Hz (500 ms) signal and is reset by setting “1” in the reset port’s 2-Hz

F/F. This bit is usually used as a clock counter.

The 2-Hz timer F/F can only by reset with the reset port’s 2 Hz F/F, and incorrect counts will be output

and correct timers not acquired if not reset within a 500 ms cycle.

The 10-Hz and 100-Hz timers are outputted to 10-Hz and 100-Hz bits with a duty 50% of 100-ms and

10-ms cycles respectively. Counters at 1 kHz or below will be reset whenever the reset port’s timer bit is set

at “1”.

φL26

2 Hz

F/F

Timer

The 10 Hz, 100 Hz and under 1 kHz bits are reset

whenever “1” is set.

φK26

2 Hz

F/F

10 Hz 100 Hz

The 2 Hz F/F is reset whenever “1” is set.

Timer

Reset port

2-Hz F/F reset execution

2-Hz F/F output

2-Hz clock

500 ms

< 500 ms

5 ms

100 ms

10 ms

50 ms

100 Hz

10 Hz

TC9328AF Datasheet(PDF) 71 Page - Toshiba Semiconductor