Datasheet

Table Of Contents
Section 12 Timer F
Rev. 2.00 Jul. 04, 2007 Page 235 of 692
REJ09B0309-0200
Section 12 Timer F
The timer F is a 16-bit timer having an output compare function. The timer F also provides for
external event counting, and counter resetting, interrupt request generation, toggle output, etc.,
using compare match signals. Thus, it can be applied to various systems. The timer F can also be
used as two independent 8-bit timers (timer FH and timer FL). Figure 12.1 shows a block diagram
of the timer F.
12.1 Features
Choice of five counter input clocks
Internal clocks (φ/32, φ/16, φ/4, and φ
W
/4) or external clocks can be selected.
Toggle output function
Toggle output is performed to the TMOFH or TMOFL pin using a compare match signal.
The initial value of toggle output can be set.
Counter resetting by a compare match signal
Two interrupt sources: One compare match, one overflow
Choice of 16-bit or 8-bit mode by settings of bits CKSH2 to CKSH0 in TCRF
Can operate in watch mode, subactive mode, and subsleep mode
When φ
W
/4 is selected as an internal clock, the timer F can operate in watch mode, subactive
mode, and subsleep mode.
Module standby mode enables this module to be placed in standby mode independently when
it is not in use (for details, refer to section 6.4, Module Standby Function).