H838532H datasheet(225/508 Pages) RENESAS

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Section 9 Timers

Rev. 1.00 May 30, 2008 Page 205 of 484

REJ09B0436-0100

Section 9 Timers

9.1

Overview

This LSI provides six timers: timers A, C, F, G, and a watchdog timer, and an asynchronous event

counter. The functions of these timers are outlined in table 9.1.

Table 9.1

Timer Functions

Name

Functions

Internal Clock

Event

Input Pin

Waveform

Output Pin Remarks

• 8-bit interval timer

• Interval function

φ/8 to φ/8192

(8 choices)

• Time base

W/128 (choice of 4

overflow periods)

—

Timer A

• Clock output

φ/4 to φ/32

W, φW/4 to φW/32

(9 choices)

—

TMOW

Timer C

• 8-bit timer

• Interval function

• Event counting

function

• Up-count/down-

count selectable

φ/4 to φ/8192, φ

W/4

(7 choices)

TMIC

—

Up-count/down-

count

controllable by

software or

hardware

Timer F

16-bit timer

Event counting

function Also usable

as two independent 8-

bit timers Output

compare output

function

φ/4 to φ/32, φ

W/4

(4 choices)

TMIF

TMOFL

TMOFH

Timer G

• 8-bit timer

• Input capture

function

• Interval function

φ/2 to φ/64, φ

W/4

(4 choices)

TMIG

—

• Counter

clearing

option

• Built-in

capture input

signal noise

canceler

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