h8s-2635 Renesas Electronics Corporation., h8s-2635 Datasheet - Page 1040

• Manufacturer Part Number: h8s-2635
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2600 Series
• Manufacturer: Renesas Electronics Corporation.

Section 23B Power-Down Modes [HD64F2636UF, HD6432636UF, HD64F2638UF,
HD6432638UF, HD64F2638WF, HD6432638WF, HD64F2639UF, HD6432639UF, HD64F2639WF,
HD6432639WF, HD64F2630UF, HD6432630UF, HD64F2630WF, HD6432630WF]
Note that the value of the SSBY bit does not change even when shifting between modes using
interrupts.
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.
Rev. 6.00 Feb 22, 2005 page 980 of 1484
REJ09B0103-0600
Bit 7
SSBY
0
1
Bit 6
STS2
0
1
Bit 5
STS1
0
1
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.
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.
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)
(Initial value)