Hitachi H8/3022 Hardware Manual page 510

Bit 4—Module Standby 4 (MSTOP4): Selects whether to place SCI0 in standby.
Bit 4
MSTOP4 Description
0 SCI0 operates normally
1 SCI0 is in standby state
Bit 3—Module Standby 3 (MSTOP3): Selects whether to place SCI1 in standby.
Bit 3
MSTOP3 Description
0 SCI1 operates normally
1 SCI1 is in standby state
Bits 2 to 1—Reserved: Bits 2 to 1 are reserved.
Bit 0—Module Standby 0 (MSTOP0): Selects whether to place the A/D converter in standby.
Bit 0
MSTOP0 Description
0 A/D converter operates normally
1 A/D converter is in standby state
500
(Initial value)
(Initial value)
(Initial value)