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HD404314H

4-bit HMCS400-series microcomputer

Hitachi -> Renesas Electronics 

HD404318 Series

Timers

The MCU has three built-in timers: A, B, and C. The functions of each timer are listed in table 7.

Timer A

Timer A is an 8-bit free-running timer that has the following features:

• One of eight internal clocks can be selected from prescaler S according to the setting of timer mode

register A (TMA: $008)

• An interrupt request can be generated when timer counter A (TCA) overflows

• Input clock frequency must not be modified during timer A operation

Table 7 Timer Functions

Functions

Clock source

Timer functions

Timer output

Prescaler S

External event

Free-running

Event counter

Reload

Watchdog

Input capture

PWM

Timer A

Available

—

Available

—

—

—

—

—

Timer B

Available

Available

Available

Available

Available

—

Available

—

Timer C

Available

—

Available

—

Available

Available

—

Available

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