Section 22 Power-Down Modes
Rev. 5.00 May 29, 2006 page 568 of 698
REJ09B0146-0500
Table 22.1
Power-Down Modes
State
Mode
Transition
Conditions
CPG
CPU
CPU
Reg-
ister
On-Chip
Memory
On-Chip
Peripheral
Modules
Pins
External
Memory
Canceling
Procedure
Sleep
mode
Execute SLEEP
instruction with
STBY bit cleared
to 0 in STBCR
Runs Halts
Held
Held
Runs
Held
Refresh
1. Interrupt
2. Reset
Software
standby
mode
Execute SLEEP
instruction with
STBY bit set to 1
in STBCR
Halts
Halts
Held
Held
Halts
*
1
Held
Self-
refresh
1. Interrupt
2. Reset
Module
standby
function
Set MSTP bit of
STBCR to 1
*
5
Runs Runs
*
4
Held
Held
Specified
module
halts
*
2
Refresh
1. Clear MSTP
bit to 0
2. Power-on
reset
Hardware
standby
mode
Drive CA pin low
Halts
Halts
Held
Held
Halts
*
3
Held
Self-
refresh
Power-on reset
Notes: 1. The RTC still runs if the START bit in RCR2 is set to 1 (see section 13, Realtime Clock
(RTC)). TMU still runs when output of the RTC is used as input to its counter (see
section 12, Timer Unit (TMU)).
2. Depends on the on-chip supporting module.
TMU external pin: Held
SCI external pin: Reset
3. The RTC still runs if the START bit in RCR2 is set to 1. TMU does not run.
4. When the LSI enters sleep mode, the CPU halts.
5. If the realtime clock (RTC) is set to module standby mode (bit 1 in standby control
register (STBCR) set to 1) before any register in the RTC, SCI, or TMU is accessed,
registers in the serial communication interface (SCI) or timer unit (TMU) may not be
read properly. To avoid this problem, access (read or write) any register in the RTC,
SCI, or TMU once or more before setting the RTC to module standby mode.
Summary of Contents for SH7706 Series
Page 8: ...Rev 5 00 May 29 2006 page viii of xlviii ...
Page 160: ...Section 5 Cache Rev 5 00 May 29 2006 page 112 of 698 REJ09B0146 0500 ...
Page 370: ...Section 11 Watchdog Timer WDT Rev 5 00 May 29 2006 page 322 of 698 REJ09B0146 0500 ...
Page 554: ...Section 17 Pin Function Controller PFC Rev 5 00 May 29 2006 page 506 of 698 REJ09B0146 0500 ...
Page 576: ...Section 18 I O Ports Rev 5 00 May 29 2006 page 528 of 698 REJ09B0146 0500 ...
Page 746: ...Index Rev 5 00 May 29 2006 page 698 of 698 REJ09B0146 0500 ...
Page 749: ...SH7706 Group Hardware Manual ...