Manual reset – Renesas SH7641 User Manual
Page 225
Section 6 Power-Down Modes
Rev. 4.00 Sep. 14, 2005 Page 175 of 982
REJ09B0023-0400
1. Manual Reset
CKIO
STATUS
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
Notes
*
3
*
3
*
2
0 to 30 Bcyc*
4
0 Bcyc to
normal
reset
normal
*
1,
*
4
RESETM
Figure 6.2 STATUS Output at Manual Reset
2. Standby Mode
A Standby mode is canceled by an interrupt
CKIO
STATUS
WDT count
Interrupt request
Oscillation stops
WDT overflow
1. standby : LH (STATUS1 = Low, STATUS0 = High)
2. normal : LL (STATUS1 = Low, STATUS0 = Low)
Notes:
*
2
*
2
*
1
normal
standby
normal
Figure 6.3 STATUS Output when Standby Mode is Canceled by an Interrupt