R8C2K datasheet(104/471 Pages) RENESAS

104 / 471 page

R8C/2K Group, R8C/2L Group

10. Clock Generation Circuit

Rev.1.10

Dec 21, 2007

Page 87 of 450

REJ09B0406-0110

10.4.2.4

Exiting Wait Mode

The MCU exits wait mode by a reset or a peripheral function interrupt.

The peripheral function interrupts are affected by the CM02 bit. When the CM02 bit is set to 0 (peripheral

function clock does not stop in wait mode), all peripheral function interrupts can be used to exit wait mode.

When the CM02 bit is set to 1 (peripheral function clock stops in wait mode), the peripheral functions using the

peripheral function clock stop operating and the peripheral functions operated by external signals or on-chip

oscillator clock can be used to exit wait mode.

Table 10.3 lists Interrupts to Exit Wait Mode and Usage Conditions.

Table 10.3

Interrupts to Exit Wait Mode and Usage Conditions

Interrupt

CM02 = 0

CM02 = 1

Serial interface interrupt

Usable when operating with

internal or external clock

Usable when operating with external

clock

Key input interrupt

Usable

A/D conversion interrupt

Usable in one-shot mode

(Do not use)

Timer RA interrupt

Usable in all modes

Can be used if there is no filter in

event counter mode.

Usable by selecting fOCO or fC32 as

count source.

Timer RB interrupt

Usable in all modes

(Do not use)

Timer RC interrupt

Usable in all modes

(Do not use)

Timer RD interrupt

Usable in all modes

Usable by selecting fOCO40M as

count source.

INT interrupt

Usable

Usable (INT0, INT1, INT3 can be used

if there is no filter.)

Voltage monitor 1 interrupt

Usable

Voltage monitor 2 interrupt

Usable

Oscillation stop detection

interrupt

Usable

(Do not use)

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