Prescaler; Prescaler Operation - Panasonic MN103S User Manual

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8.3 Prescaler

Prescaler outputs 1/8, 1/32, and 1/128 dividing clock with using IOCLK as an input clock.

Count Clock Source and Prescaler

When selecting IOCLK/8, IOCLK/32, or IOCLK/128 to count clock source of timer, the prescaler should be set

up. The following table shows the relationship between count clock sources and controlled registers.

When setting a count clock source to 128 dividing, set count clock source selection of the timer mode register

(TM0MD, TM2MD, TM4MD, TM6MD, TM14MD and TM16MD) to IOCLK/128 of "111".

Table:8.3.1 Count Clock Source and Prescaler

Count clock source

IOCLK (Timer 0 to 7, 14 to 17)

IOCLK/8 (Timer 0 to 3)

IOCLK/8 (Timer 4 to 7)

IOCLK/8 (Timer 14 to 17)

IOCLK/32 (Timer 0 to 3)

IOCLK/32 (Timer 4 to 7)

IOCLK/32 (Timer 14 to 17)

IOCLK/128 (Timer 0,2,4,6,14,16)

Timer n underflow

TMnIO pin input

Prescaler setting

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