hd64338342hw Renesas Electronics Corporation., hd64338342hw Datasheet - Page 311

• Manufacturer Part Number: hd64338342hw
• Description: Renesas 8-bit Single-chip Microcomputer H8 Family/h8/300l Super Low Power 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:
Choice of four internal clock sources ( /32, /16, /4, w/4) or an external clock (can be used
as an external event counter)
TMOFH pin (TMOFL 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 w/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.
* When timer F operates as a 16-bit timer, it operates on the timer FL overflow signal.
Timer F
Overview
Timer FH 8-Bit Timer*
Choice of 4 ( /32, /16, /4, w/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
Rev. 6.00 Aug 04, 2006 page 275 of 680
Timer FL 8-Bit Timer/Event Counter
TMIF pin
One compare match signal,
output to TMOFL pin
(initial value settable)
REJ09B0145-0600
Section 9 Timers