h8s-2169 Renesas Electronics Corporation., h8s-2169 Datasheet - Page 780

• Manufacturer Part Number: h8s-2169
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

Section 24 Power-Down State
Bit 7
SSBY
0
1
Bits 6 to 4—Standby Timer Select 2 to 0 (STS2 to STS0): These bits select the time the MCU
waits for the clock to stabilize when software standby mode, watch mode, or subactive mode is
cleared and a transition is made to high-speed mode or medium-speed mode by means of a
specific interrupt or instruction. With crystal oscillation, refer to table 24.4 and make a selection
according to the operating frequency so that the standby time is at least 8 ms (the oscillation
settling time). With an external clock, any selection can be made.
Bit 6
STS2
0
1
Note:
Bit 3—Reserved: This bit cannot be modified and is always read as 0.
Rev. 3.00 Jan 18, 2006 page 752 of 1044
REJ09B0280-0300
* This setting must not be used in the flash memory version.
Bit 5
STS1
0
1
0
1
Description
Transition to sleep mode after execution of SLEEP instruction in high-speed mode or
medium-speed mode
Transition to subsleep mode after execution of SLEEP instruction in subactive mode
Transition to software standby mode, subactive mode, or watch mode after execution
of SLEEP instruction in high-speed mode or medium-speed mode
Transition to watch mode or high-speed mode after execution of SLEEP instruction 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 *
(Initial value)
(Initial value)