HD64F36024 datasheet(100/384 Pages) RENESAS

100 / 384 page

Section 6 Power-Down Modes

Rev. 4.00 Sep. 23, 2005 Page 74 of 354

REJ09B0025-0400

Table 6.2

Transition Mode after SLEEP Instruction Execution and Interrupt Handling

DTON

SSBY

SMSEL

Transition Mode after SLEEP

Instruction Execution

Transition Mode due to

Interrupt

Sleep mode

Active mode

Subsleep mode

Active mode

Standby mode

Active mode

Active mode (direct transition)

—

Legend:

X: Don’t care.

When a state transition is performed while SMSEL is 1, timer V, SCI3, SCI3_2, SCI3_3

(only for the H8/36024) and the A/D converter are reset, and all registers are set to their

initial values. To use these functions after entering active mode, reset the registers.

Table 6.3

Internal State in Each Operating Mode

Function

Active Mode

Sleep Mode

Subsleep Mode

Standby Mode

System clock oscillator

Functioning

Halted

Instructions

Functioning

Halted

CPU

operations

Registers

Functioning

Retained

RAM

Functioning

Retained

IO ports

Functioning

Retained

retained, but output is the

high-impedance state.

IRQ3, IRQ0

Functioning

External

interrupts

WKP5 to

WKP0

Functioning

Timer V

Functioning

Reset

Peripheral

functions

Timer W

Functioning

Retained

Retained (if internal clock

φ is selected as a count

clock, the counter is

incremented by a

subclock)

Watchdog

timer

Functioning

Retained

Retained (functioning if the

internal oscillator is

selected as a count clock)

SCI3

Functioning

Reset

A/D converter

Functioning

Reset

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