hd66100 Renesas Electronics Corporation., hd66100 Datasheet - Page 209

• Manufacturer Part Number: hd66100
• Description: H8/3867 Series
• Manufacturer: Renesas Electronics Corporation.

9.4
9.4.1
Timer F is a 16-bit timer with a built-in output compare function. As well as counting external
events, timer F also provides for counter resetting, interrupt request generation, toggle output, etc.,
using compare match signals. Timer F can also be used as two independent 8-bit timers (timer FH
and timer FL).
1. Features
Features of timer F are given below.
Internal clock
Event input
Toggle output
Counter reset
Interrupt sources
Note: * When timer F operates as a 16-bit timer, it operates on the timer FL overflow signal.
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Choice of four internal clock sources (ø/32, ø/16, ø/4, øw/4) or an external clock (can be used
as an external event counter)
TMOFH pin toggle output provided using a single compare match signal (toggle output initial
value can be set)
Counter resetting by a compare match signal
Two interrupt sources: one compare match, one overflow
Can operate as two independent 8-bit timers (timer FH and timer FL) (in 8-bit mode).
Operation in watch mode, subactive mode, and subsleep mode
When øw/4 is selected as the internal clock, timer F can operate in watch mode, subactive
mode, and subsleep mode.
Use of module standby mode enables this module to be placed in standby mode independently
when not used.
Timer F
Overview
Timer FH 8-Bit Timer*
Choice of 4 (ø/32, ø/16, ø/4, øw/4)
—
One compare match signal, output to
TMOFH pin(initial value settable)
Counter can be reset by compare match signal
One compare match
One overflow
Timer FL
8-Bit Timer/Event Counter
TMIF pin
One compare match signal, output to
TMOFL pin (initial value settable)