7733 datasheet(160/940 Pages) RENESAS

Nome de Peças	7733

Descrição Electrónicos	16-BIT SINGLE-CHIP MICROCOMPUTER

PDF	940 Pages

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Fabricante Electrônico	RENESAS [Renesas Technology Corp]

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TIMER A

7733 Group User’s Manual

6–49

6.6 Pulse width modulation (PWM) mode

Fig. 6.6.6 Operation example of 8-bit pulse width modulator

Count source

Pin TAiIN’s

input signal

1 / fi ! (m + 1) ! (28 – 1)

1 / fi ! (m + 1) ! (n)

PWM pulse output

from pin TAiOUT

g The above is applied when the following conditions are satisfied:

•Reload register’s high-order 8 bits = “0216”

•Reload register’s low-order 8 bits = “0216”

•When an external trigger (Falling edge of pin TAiIN’s input signal) is selected.

“H”

“L”

“1”

“0”

Timer Ai interrupt

request bit

Cleared to “0” when an interrupt request is accepted; otherwise, cleared

by software

fi: Frequency of the count source

(f2, f16, f64, or f512)

8-bit prescaler counts the count source.

8-bit pulse width modulator counts the 8-bit prescaler’s underflow signal.

8-bit prescaler’s

underflow signal

1 / fi ! (m + 1)

7733 Folha de dados(PDF) 160 Page - Renesas Technology Corp