7721 datasheet(160/577 Pages) RENESAS

tên linh kiện	7721

Giải thích chi tiết về linh kiện	16-BIT SINGLE-CHIP MICROCOMPUTER

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TIMER A

7721 Group User’s Manual

8–41

8.6 Pulse width modulation (PWM) mode

Fig. 8.6.3 Initial setting example for registers relevant to PWM mode (2)

Count

Trigger input

to TAjIN pin

When external trigger is selected

When internal trigger is selected

From preceding Figure 8.6.2.

Trigger generated

Port P5 direction register

(Address D16)

Setting port P5 direction register

TA2IN pin

TA3IN pin

TA4IN pin

Clear the corresponding bit to “0.”

Setting count start bit to “1”

Count start register (Address 4016)

Timer A2 count start bit

Timer A3 count start bit

Timer A4 count start bit

Setting count start bit to “1”

Count start register (Address 4016)

Timer A2 count start bit

Timer A3 count start bit

Timer A4 count start bit

Setting interrupt priority level

Timer Aj interrupt control register (j = 2 to 4)

(Addresses 7716 to 7916)

Interrupt priority level select bits

When using interrupts, set these bits to one of

levels 1 to 7.

When disabling interrupts, set these bits to

level 0.

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