h8s-2169 Renesas Electronics Corporation., h8s-2169 Datasheet - Page 779

• Manufacturer Part Number: h8s-2169
• Description: Renesas 16-bit Single-chip Microcomputer H8s Family/h8s/2100 Series
• Manufacturer: Renesas Electronics Corporation.

24.1.1
The power-down state is controlled by the SBYCR, LPWRCR, TCSR (WDT1), and MSTPCR
registers. Table 24.3 summarizes these registers.
Table 24.3 Power-Down State Registers
Notes: 1. Lower 16 bits of the address.
24.2
24.2.1
SBYCR is an 8-bit readable/writable register that performs power-down mode control.
SBYCR is initialized to H'00 by a reset and in hardware standby mode. It is not initialized in
software standby mode.
Bit 7—Software Standby (SSBY): Determines the operating mode, in combination with other
control bits, when a power-down mode transition is made by executing a SLEEP instruction. The
SSBY setting is not changed by a mode transition due to an interrupt, etc.
Name
Standby control register
Low-power control register
Timer control/status register
(WDT1)
Module stop control register
Bit
Initial value
Read/Write
2. A CPU access to some of the control registers in the power-down state is controlled by
Register Configuration
Register Descriptions
Standby Control Register (SBYCR)
the FLSHE bit of the serial/timer control register (STCR).
SSBY
R/W
7
0
STS2
R/W
6
0
Abbreviation
SBYCR
LPWRCR
TCSR
MSTPCRH
MSTPCRL
STS1
R/W
5
0
STS0
R/W
4
0
R/W
R/W
R/W
R/W
R/W
R/W
Rev. 3.00 Jan 18, 2006 page 751 of 1044
—
—
3
0
Initial Value
H'00
H'00
H'00
H'3F
H'FF
Section 24 Power-Down State
SCK2
R/W
2
0
SCK1
R/W
REJ09B0280-0300
1
0
Address *
H'FF84 *
H'FF85 *
H'FFEA
H'FF86 *
H'FF87 *
SCK0
R/W
0
0
2
2
2
2
1