h8s-2138 Renesas Electronics Corporation., h8s-2138 Datasheet - Page 739

• Manufacturer Part Number: h8s-2138
• 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.
Name
Standby control register
Low-power control register
Timer control/status register
(WDT1)
Module stop control register
Bit
Initial value
Read/Write
2. Some power down state registers are assigned to the same address as other registers.
Register Configuration
Register Descriptions
Standby Control Register (SBYCR)
In this case, register selection is performed by the FLSHE bit in 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. 4.00 Jun 06, 2006 page 685 of 1004
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3
0
H'00
Initial Value
H'00
H'00
H'3F
H'FF
Section 24 Power-Down State
SCK2
R/W
2
0
SCK1
R/W
REJ09B0301-0400
1
0
Address *
H'FF84 *
H'FF85 *
H'FFEA
H'FF86 *
H'FF87 *
SCK0
R/W
0
0
2
2
2
2
1