Hitachi H8S/2646 Hardware Manual page 991

SBYCR—Standby Control Register
Bit 7
SSBY
Initial value 0
Read/Write R/W
Standby Timer Select 2 to 0
0 0
1
1 0
1
Software Standby
0 Shifts to sleep mode when the SLEEP instruction is executed in high-speed mode or
medium-speed mode
Shifts to sub-sleep mode when the SLEEP instruction is executed in sub-active mode
1 Shifts to software standby mode, sub-active 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
sub-active mode
6 5
STS2 STS1
1 0
R/W R/W
Output Port Enable
0 In software standby mode, watch mode, and when making a direct
transition, address bus and bus control signals are high-impedance
1 In software standby mode, watch mode, and when making a direct
transition, the output state of the address bus and bus control
signals is retained
0 Standby time = 8192 states
1 Standby time = 16384 states
0 Standby time = 32768 states
1 Standby time = 65536 states
0 Standby time = 131072 states
1 Standby time = 262144 states
0 Reserved
1 Standby time = 16 states
H'FDE4
4 3
STS0 OPE
1 1
R/W R/W
2 1 0
— — —
0 0 0
— — —
System
959