HD64F2638F20J Datasheet, PDF (1363/1512 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2600 Series

H8S/2639, H8S/2638, H8S/2636,
H8S/2630, H8S/2635 Group
Appendix B Internal I/O Register
SBYCR—Standby Control Register
H'FDE4
System
Bit
7
6
5
4
3
2
1
0
SSBY STS2 STS1 STS0 OPE
⎯
⎯
⎯
Initial value
0
1
0
1
1
0
0
0
Read/Write R/W
R/W
R/W
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
Standby Timer Select 2 to 0
0 0 0 Standby time = 8192 states
1 Standby time = 16384 states
1 0 Standby time = 32768 states
1 Standby time = 65536 states
1 0 0 Standby time = 131072 states
1 Standby time = 262144 states
1 0 Reserved
1 Standby time = 16 states (Setting prohibited)
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
REJ09B0103-0800 Rev. 8.00
May 28, 2010
Page 1313 of 1458