188
Bit 7—Standby (STBY): Specifies transition to standby mode.
Bit 7: STBY
Description
0
Executing SLEEP instruction puts chip into sleep mode
(Initial value)
1
Executing SLEEP instruction puts chip into standby mode
Bits 6, 5, and 3—Reserved: These bits are always read as 0. The write value should always be 0.
Bit 4—Standby Crystal (STBXTL): Specifies halting or operating of the clock pulse generator
in standby mode.
Bit 4: STBXTL
Description
0
Clock pulse generator is halted in standby mode
(Initial value)
1
Clock pulse generator is operates in standby mode
Bit 2—Module Standby 2 (MSTP2): Specifies halting of the clock supply to the timer unit TMU
(an on-chip peripheral module). When the MSTP2 bit is set to 1, the supply of the clock to the
TMU is halted.
Bit 2: MSTP2
Description
0
TMU runs
(Initial value)
1
Clock supply to TMU is halted
Bit 1—Module Standby 1 (MSTP1): Specifies halting of the clock supply to the realtime clock
RTC (an on-chip peripheral module). When the MSTP1 bit is set to 1, the supply of the clock to
the RTC is halted. When the clock halts, all RTC registers become inaccessible, but the counter
keeps running.
Bit 1: MSTP1
Description
0
RTC runs
(Initial value)
1
Clock supply to RTC is halted
Bit 0—Module Standby 0 (MSTP0): Specifies halting of the clock supply to the serial
communication interface SCI (an on-chip peripheral module). When the MSTP0 bit is set to 1, the
supply of the clock to the SCI is halted.
Bit 0: MSTP0
Description
0
SCI operates
(Initial value)
1
Clock supply to SCI is halted
Summary of Contents for SH7709S
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