HD6433636SW datasheet(175/418 Pages) RENESAS

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Section 9 Timers

9.1

Overview

The H8/3637S Series provides five timers (timers A, F, G, Y, and watchdog timer) on-chip.

Table 9.1 outlines the functions of timers A, F, G, Y, and watchdog timer.

Table 9.1

Timer Functions

Name

Functions

Internal Clock

Event

Input Pin

Waveform

Output Pin

Remarks

Timer A

8-bit

timer

Interval timer ø/8 to ø/8192

(8 choices)

——

Time base

W/128

(choice of 4

overflow periods)

——

Clock output

ø/4 to ø/32,

W/4 to ø W/32

(8 choices)

—

TMOW

Timer F

• 16-bit free-running

timer

• Event counter

• Can be used as two

independent 8-bit

timers

• Output compare

ø/2 to ø/32

(4 choices)

TMIF

TMOFL

TMOFH

Timer G

• 8-bit timer

• Input capture

• Interval timer

ø/2 to ø/64, ø

W/2

(4 choices)

TMIG

—

• Counter clear

designation

possible

• Built-in noise

canceller

circuit for input

capture

Timer Y

• 16-bit reload timer

• Can operate as free-

running timer

• Event counter function

ø/4 to ø/8192

(7 types)

TMCIY

—

Watchdog

timer

• Reset signal

generated on 8-bit

counter overflow

ø/8192

—

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