Hitachi H8S/2338 Series Hardware Manual page 615

Bit 6 Bit 5 Bit 4
STS2 STS1 STS0
0 0 0
1
1 0
1
1 0 0
1
1 0
1
Note: * Not available in the F-ZTAT version.
Bit 3—Output Port Enable (OPE): Specifies whether the output of the address bus and bus
control signals (CS0 to CS7, AS, RD, HWR, LWR, CAS) is retained or set to the high-impedance
state in software standby mode.
Bit 3
OPE Description
0 In software standby mode, address bus and bus control signals are high-impedance
1 In software standby mode, address bus and bus control signals retain output state
Bits 2 and 1—Reserved: Read-only bits, always read as 0.
Bit 0—IRQ37 Software Standby Clear Select (IRQ37S): Specifies whether inputs IRQ3 to
IRQ7 can be used as software standby mode clearing sources in addition to the usual sources, NMI
and IRQ0 to IRQ2 inputs.
Bit 0
IRQ37S Description
Inputs IRQ3 to IRQ7 cannot be used as software standby mode clearing sources
0
Inputs IRQ3 to IRQ7 can be used as software standby mode clearing sources
1
610
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)
(Initial value)