HD404364 查看數據表（PDF） - Renesas Electronics

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HD404364

4-bit HMCS400-Series microcomputer

Renesas Electronics 

HD404369 Series

Operating Modes

The MCU has five operating modes as shown in table 17. The operations in each mode are listed in tables

18 and 19. Transitions between operating modes are shown in figure 11.

Active Mode: All MCU functions operate according to the clock generated by the system oscillator OSC 1

and OSC2.

Table 17 Operating Modes and Clock Status

Mode Name

Active

Standby Stop

Watch

Subactive*2

Activation method

RESET cancellation,

interrupt STOPC

cancellation in stop

mode, STOP/SBY

instruction in

subactive mode

(when direct transfer

is selected)

SBY

instruction

STOP

STOP

INT0 or timer A

instruction when instruction when interrupt request

TMA3 = 0

TMA3 = 1

from watch

mode

Status System OP

oscillator

OP

Stopped

Stopped

Stopped

Subsystem OP

oscillator

OP

*1 OP

OP

OP

Cancellation

method

RESET input,

RESET

STOP/SBY instruction input,

interrupt

request

RESET input, RESET input, RESET input,

STOPC input in INT0 or timer A STOP/SBY

stop mode

interrupt request instruction

Notes: OP implies in operation

1. Operating or stopping the oscillator can be selected by setting bit 3 of the system clock select

register 1 (SSR1: $027).

2. Subactive mode is an optional function; specify it on the function option list.

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