hd64338023s Renesas Electronics Corporation., hd64338023s Datasheet - Page 303

• Manufacturer Part Number: hd64338023s
• Description: Renesas 8-bit Single-chip Microcomputer 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).
Features
Features of timer F are given below.
• Choice of four internal clock sources (φ/32, φ/16, φ/4, φw/4) or an external clock (can be used
• TMOFH/TMOFL pin toggle output provided using a single compare match signal (toggle
• 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).
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.
• Operation in watch mode, subactive mode, and subsleep mode
• Use of module standby mode enables this module to be placed in standby mode independently
as an external event counter)
output initial value can be set)
When φw/4 is selected as the internal clock, timer F can operate in watch mode, subactive
mode, and subsleep mode.
when not used.
Timer F
Overview
Timer FH 8-Bit Timer *
Choice of 4 (φ/32, φ/16, φ/4, φw/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. 7.00 Mar 10, 2005 page 261 of 652
Timer FL
8-Bit Timer/Event Counter
TMIF pin
One compare match signal, output to
TMOFL pin (initial value settable)
REJ09B0042-0700
Section 9 Timers