HD64F2149YV datasheet(798/1075 Pages) RENESAS

Nome de Peças	HD64F2149YV

Descrição Electrónicos	Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2100 Series

PDF	1075 Pages

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Fabricante Electrônico	RENESAS [Renesas Technology Corp]

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Section 24 Power-Down State

Rev. 3.00 Jan 18, 2006 page 770 of 1044

REJ09B0280-0300

24.12

Usage Notes

24.12.1

On-Chip Peripheral Module Interrupt

• Subactive Mode/Watch Mode

On-chip peripheral modules (DTC, FRT, TMRX, TMRY, Timer Connection, IIC) that stop

operation in subactive mode cannot clear interrupts in subactive mode. Therefore, if subactive

mode is entered when an interrupt is requested, CPU interrupt factors cannot be cleared.

Interrupts should therefore before executing the SLEEP instruction and entering subactive or

watch mode.

24.12.2

Entering Subactive/Watch Mode and DTC Module Stop

To enter subactive or watch mode, set DTC to module stop (write 1 to the MSTP14 bit) and

reading the MSTP14 bit as 1 before transiting mode. After transiting from subactive mode to

active mode, clear module stop.

When DTC activation factor occurs in subactive mode, DTC is activated when module stop is

cleared after active mode is entered.

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