hd66100 Renesas Electronics Corporation., hd66100 Datasheet - Page 121

• Manufacturer Part Number: hd66100
• Description: H8/3867 Series
• Manufacturer: Renesas Electronics Corporation.

5.3.4
When a SLEEP instruction is executed in active (high-speed) mode or active (medium-speed)
mode while bit SSBY is set to 1 and bit LSON is cleared to 0 in SYSCR1, and bit TMA3 is
cleared to 0 in TMA, a transition is made to standby mode. At the same time, pins go to the high-
impedance state (except pins for which the pull-up MOS is designated as on). Figure 5.2 shows
the timing in this case.
106
Internal data bus
Pins
ø
Standby Mode Transition and Pin States
Active (high-speed) mode or active (medium-speed) mode
SLEEP instruction fetch
Figure 5.2 Standby Mode Transition and Pin States
Port output
SLEEP instruction execution
Fetch of next instruction
Internal processing
High-impedance
Standby mode