HD404354 데이터 시트보기 (PDF) - Renesas Electronics

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HD404354

4-bit HMCS400-Series microcomputer

Renesas Electronics 

HD404358 Series

Operating Modes

The MCU has three 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.

Table 17 Operating Modes and Clock Status

Mode Name

Active

Standby

Activation method

RESET cancellation,

SBY instruction

interrupt request, STOPC

cancellation in stop mode

Status

System OP

OP

oscillator

Cancellation

method

RESET input, STOP/ SBY RESET input, interrupt

instruction

request

Note: OP implies in operation

Stop

STOP instruction

Stopped

RESET input, STOPC

input in stop mode

Table 18 Operations in Low-Power Dissipation Modes

Function

CPU

RAM

Timer A

Timer B

Timer C

Serial

A/D

I/O

Note: OP implies in operation

Stop Mode

Reset

Retained

Reset

Reset

Reset

Reset

Reset

Reset

Standby Mode

Retained

Retained

OP

OP

OP

OP

OP

Retained

Table 19 I/O Status in Low-Power Dissipation Modes

RA1

R0–D8, R0–R4,

R8,

Output

Standby Mode

—

Retained or output of

peripheral functions

Stop Mode

—

High impedance

Input

Active Mode

Input enabled

Input enabled

24

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