HD64F2638F20J Datasheet, PDF (1004/1512 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2600 Series

Section 23B Power-Down Modes [HD64F2636UF, HD6432636UF, HD64F2638UF, HD6432638UF,
HD64F2638WF, HD6432638WF, HD64F2639UF, HD6432639UF, HD64F2639WF, HD6432639WF,
HD64F2630UF, HD6432630UF, HD64F2630WF, HD6432630WF, HD6432635F, HD64F2635F, HD6432634F]
H8S/2639, H8S/2638, H8S/2636,
H8S/2630, H8S/2635 Group
Bit 7
SSBY
0
1
Description
Shifts to sleep mode when the SLEEP instruction is executed in high-speed
mode or medium-speed mode.
Shifts to subsleep mode when the SLEEP instruction is executed in
subactive mode.
(Initial value)
Shifts to software standby mode, subactive mode, and watch mode when the SLEEP
instruction is executed in high-speed mode or medium-speed mode.
Shifts to watch mode or high-speed mode when the SLEEP instruction is executed in
subactive mode.
Bits 6 to 4—Standby Timer Select 2 to 0 (STS2 to STS0): These bits select the MCU wait time
for clock stabilization when shifting to high-speed mode or medium-speed mode by using a
specific interrupt or command to cancel software standby mode, watch mode, or subactive mode.
With a quartz oscillator (Table 23B-6), select a wait time of 8ms (oscillation stabilization time) or
more, depending on the operating frequency. With an external clock, select a standby time of 2 ms
or more (PLL oscillator settling time), based on the operating frequency.
Bit 6
STS2
0
1
Bit 5
STS1
0
1
0
1
Bit 4
STS0
0
1
0
1
0
1
0
1
Description
Standby time = 8192 states
Standby time = 16384 states
Standby time = 32768 states
Standby time = 65536 states
Standby time = 131072 states
Standby time = 262144 states
Reserved
Standby time = 16 states (Setting prohibited)
(Initial value)
Page 954 of 1458
REJ09B0103-0800 Rev. 8.00
May 28, 2010