HD6412240 RENESAS [Renesas Technology Corp], HD6412240 Datasheet - Page 603

• Manufacturer Part Number: HD6412240
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Figure 18.1 shows the timing for transition to and clearance of medium-speed mode.
18.4
If a SLEEP instruction is executed when the SSBY bit in SBYCR is cleared to 0, the CPU enters
sleep mode. In sleep mode, CPU operation stops but the contents of the CPU's internal registers
are retained. Other supporting modules do not stop.
Sleep mode is cleared by a reset or any interrupt, and the CPU returns to the normal program
execution state via the exception handling state. Sleep mode is not cleared if interrupts are
disabled, or if interrupts other than NMI are masked by the CPU.
When the STBY pin is driven low, a transition is made to hardware standby mode.
supporting module
clock
Bus master clock
Internal address
bus
Internal write signal
,
Sleep Mode
Figure 18.1 Medium-Speed Mode Transition and Clearance Timing
SCKCR
Medium-speed mode
Rev.3.00 Mar. 26, 2007 Page 561 of 772
Section 18 Power-Down Modes
SCKCR
REJ09B0355-0300