H8S-2350 RENESAS [Renesas Technology Corp], H8S-2350 Datasheet - Page 722

• Manufacturer Part Number: H8S-2350
• Description: 16-Bit Single-Chip Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 20 Power-Down Modes
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 is cleared by an external interrupt.
With crystal oscillation, refer to table 20.4 and make a selection according to the operating
frequency so that the standby time is at least 8 ms (the oscillation stabilization time). With an
external clock, any selection can be made.
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.
Bits 2 and 1—Reserved: Read-only bits, always read as 0.
Bit 0—Reserved: This bit can be read or written to, but only 0 should be written.
Rev. 3.00 Sep 15, 2006 page 688 of 988
REJ09B0330-0300
Bit 6
STS2
0
1
Bit 3
OPE
0
1
Bit 5
STS1
0
1
0
1
Description
In software standby mode, address bus and bus control signals are high-impedance
In software standby mode, address bus and bus control signals retain output state
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)