Fujitsu F2MC-16LX Hardware Manual page 328

CHAPTER 16 16-BIT RELOAD TIMER
I Counter operation modes
❍ Reload mode
If countdown causes an underflow("0000
to continue with counting. An underflow can generate an interrupt request that can then be used
to provide an interval timer. A toggle waveform that reverses itself at every underflow is output
from the TOT0 pin.
Count clock
Internal clock
External clock
❍ One-shot mode
If countdown generates an underflow ("0000
can be used to generate an interrupt. While counting is in progress, a square wave that
indicates that counting is in progress is output from the TOT0 pin.
Reference:
The 16-bit reload timer can be used to trigger A/D converter operation.
312
" --> "FFFF
H
Count clock interval
1 / φ (0.125 µs)
2
3 / φ (0.5 µs)
2
5 / φ (2.0 µs)
2
3 / φ (0.5 µs)
2
" --> "FFFF
H
"), the specified count value is reloaded
H
Interval time
0.125 µs to 8.192 ms
0.5 µs to 32.768 ms
2.0 µs to 131.1 ms
0.5 µs or more
"), counting will stop. An underflow
H