867
ø,
Bus master clock
supporting module clock
Internal address bus
Internal write signal
Medium-speed mode
SBYCR
SBYCR
Figure 24-2 Medium-Speed Mode Transition and Clearance Timing
24.4
Sleep Mode
24.4.1
Sleep Mode
When the SLEEP instruction is executed when the SBYCR SSBY bit = 0 and the LPWRCR
LSON bit = 0, the CPU enters the sleep mode. In sleep mode, CPU operation stops but the
contents of the CPUís internal registers are retained. Other supporting modules do not stop.
24.4.2
Exiting Sleep Mode
Sleep mode is exited by any interrupt, or signals at the
RES
,
MRES
, or
STBY
pins.
(1) Exiting Sleep Mode by Interrupts
When an interrupt occurs, sleep mode is exited and interrupt exception processing starts. Sleep
mode is not exited if the interrupt is disabled, or interrupts other than NMI are masked by the
CPU.
(2) Exiting Sleep Mode by
RES
or
MRES
Pins
Setting the
RES
or
MRES
pin level Low selects the reset state. After the stipulated reset input
duration, driving the
RES
and
MRES
pins High starts the CPU performing reset exception
processing.
(3) Exiting Sleep Mode by
STBY
Pin
When the
STBY
pin level is driven low, a transition is made to hardware standby mode.
Содержание H8S/2631
Страница 28: ...xviii Appendix G Package Dimensions 1154 ...
Страница 341: ...316 Transfer SAR or DAR DAR or SAR Block area First block Nth block Figure 9 8 Memory Mapping in Block Transfer Mode ...
Страница 918: ...905 ø DREQ0 DREQ1 tDRQS tDRQH Figure 25 19 DMAC DREQ Input Timing ...
Страница 955: ...943 A 2 Instruction Codes Table A 2 shows the instruction codes ...