HD404629R Datasheet, PDF(61/157 Page) Renesas Technology Corp – AS Microcomputer Incorporating a DTMF Generator Circuit

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HD404629R Datasheet, PDF (61/157 Pages) Renesas Technology Corp – AS Microcomputer Incorporating a DTMF Generator Circuit

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HD404629R Series

Timers

The MCU has four timer/counters (A to D).

â¢ Timer A: Free-running timer

â¢ Timer B: Multifunction timer

â¢ Timer C: Multifunction timer

â¢ Timer D: Multifunction timer

Timer A is an 8-bit free-running timer. Timers BâD are 8-bit multifunction timers, whose functions are

listed in table 26. The operating modes are selected by software.

Table 26 Timer Functions

Functions

Timer A

Clock

Prescaler S

Available

source

Prescaler W

Available

External event â

Timer

Free-running

Available

functions Time-base

Available

Event counter â

Reload

Watchdog

Input capture

Timer

Toggle

outputs

0 output

1 output

PWM

Note: â implies not available.

Timer B

Available

Timer C

Available

Timer D

Available

Timer A

Timer A Functions: Timer A has the following functions.

â¢ Free-running timer

â¢ Clock time-base

The block diagram of timer A is shown in figure 43.

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