SH7641 Datasheet, PDF(225/1036 Page) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family / SH7641 Series

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SH7641 Datasheet, PDF (225/1036 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family / SH7641 Series

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Section 6 Power-Down Modes

1. Manual Reset

CKIO

RESETM

STATUS

normal*3

reset *2

normal*3

0 Bcyc to *1,*4

0 to 30 Bcyc*4

Notes 1. In manual reset, STATUS = HH (reset) after the current bus cycle is completed

and then internal reset is initiated.

2. reset: HH (STATUS1 = High, STATUS0 = High)

3. normal: LL (STATUS1 = Low, STATUS0 = Low)

4. Bcyc: Bus clock cycle

Figure 6.2 STATUS Output at Manual Reset

2. Standby Mode

A Standby mode is canceled by an interrupt

Oscillation stops

Interrupt request

WDT overflow

CKIO

STATUS

normal *2

standby *1

WDT count

normal *2

Notes: 1. standby : LH (STATUS1 = Low, STATUS0 = High)

2. normal : LL (STATUS1 = Low, STATUS0 = Low)

Figure 6.3 STATUS Output when Standby Mode is Canceled by an Interrupt

Rev. 4.00 Sep. 14, 2005 Page 175 of 982

REJ09B0023-0400

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