SH7751 Datasheet, PDF (341/1224 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

9. Power-Down Modes
Bit 4—Module Stop 4 (MSTP4): Specifies stopping of the clock supply to the DMAC among the
on-chip peripheral modules. The clock supply to the DMAC is stopped when the MSTP4 bit is set
to 1. When DMA transfer is used, stop the transfer before setting the MSTP4 bit to 1. When DMA
transfer is performed after clearing the MSTP4 bit to 0, DMAC settings must be made again.
Bit 4: MSTP4
0
1
Description
DMAC operates
DMAC clock supply is stopped
(Initial value)
Bit 3—Module Stop 3 (MSTP3): Specifies stopping of the clock supply to serial communication
interface channel 2 (SCIF) among the on-chip peripheral modules. The clock supply to the SCIF is
stopped when the MSTP3 bit is set to 1.
Bit 3: MSTP3
0
1
Description
SCIF operates
SCIF clock supply is stopped
(Initial value)
Bit 2—Module Stop 2 (MSTP2): Specifies stopping of the clock supply to the timer unit channel
0 to 2 (TMU) among the on-chip peripheral modules. The clock supply to the TMU is stopped
when the MSTP2 bit is set to 1.
Bit 2: MSTP2
y
1
Description
TMU channel 0 to 2 operates
TMU channel 0 to 2 clock supply is stopped
(Initial value)
Bit 1—Module Stop 1 (MSTP1): Specifies stopping of the clock supply to the realtime clock
(RTC) among the on-chip peripheral modules. The clock supply to the RTC is stopped when the
MSTP1 bit is set to 1. When the clock supply is stopped, RTC registers cannot be accessed but the
counters continue to operate.
Bit 1: MSTP1
0
1
Description
RTC operates
RTC clock supply is stopped
(Initial value)
Rev.4.00 Oct. 10, 2008 Page 243 of 1122
REJ09B0370-0400