7477 datasheet(85/354 Pages) RENESAS

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7470/7471/7477/7478 GROUP USER’S MANUAL

1-68

HARDWARE

1.12 Timers

Table 1.12.5 Setting for Timer 3 count source

Note: When f(XCIN) is selected as a timer count source, f(XIN) or f(XCIN) can be selected as a system clock.

Table 1.12.6 Setting for Timer 4 count source

Note: If the Timer 1 overflow signal is selected as a Timer 2 count source at [b5,b4] = [1,0], the Timer 4

count source becomes the Timer 1 overflow signal regardless of bit 6 of Timer mode register 2.

Setting item

Count source

to be selected

f(XIN)/16

f(XCIN)

f(XCIN)/16

Timer 1 overflow signal

Timer 2 overflow signal

External clock input from

CNTR1 pin

CPU mode register

(CM: Address 00FB16)

–

Timer mode register 2

(TM2: Address 00FA16)

Timer 34 mode register

(T34M: Address 00F916)

–

(Note)

Setting item

Count source

to be selected

f(XIN)/16

f(XCIN)/16

Timer 1 overflow signal

Timer 2 overflow signal

Timer 3 overflow signal

External clock input from

CNTR1 pin

CPU mode register

(CM: Address 00FB16)

–

Timer mode register 2

(TM2: Address 00FA16)

Timer 34 mode register

(T34M: Address 00F916)

–

(Note)

Setting item

Timer

Timer 1

Timer 2

Timer 3

Timer 4

Timer 12 mode register

(T12M: Address 00F816)

Timer 34 mode register

(T34M: Address 00F916)

–

Timer

Timer 1(T1)

Timer 2(T2)

Timer 3(T3)

Timer 4(T4)

Table 1.12.7 Address allocation of timer

4 When a value is set according to the count start setting shown in Table 1.12.8, the timer starts

to count.

Table 1.12.8 Count start setting

3 Set a count value in the timer.

Refer to “Table 1.12.7 Address allocation

for timer.”

Address

00F016

00F116

00F216

00F316

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