HD6413008F RENESAS [Renesas Technology Corp], HD6413008F Datasheet - Page 503

• Manufacturer Part Number: HD6413008F
• Description: Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series
• Manufacturer: RENESAS [Renesas Technology Corp]

18.2
The H8/3008 has a system control register (SYSCR) that controls the power-down state, and
module standby control registers H (MSTCRH) and L (MSTCRL) that control the module standby
function. Table 18.2 summarizes these registers.
Table 18.2 Control Register
Address*
H'EE012
H'EE01C
H'EE01D
Note:
18.2.1
SYSCR is an 8-bit readable/writable register. Bit 7 (SSBY), bits 6 to 4 (STS2 to STS0), and bit 1
(SSOE) control the power-down state. For information on the other SYSCR bits, see section 3.3,
System Control Register (SYSCR).
Bit
Initial value
Read/Write
* Lower 20 bits of the address in advanced mode.
Register Configuration
System Control Register (SYSCR)
Name
System control register
Module standby control register H
Module standby control register L
SSBY
Software standby
Enables transition to
software standby mode
R/W
7
0
STS2
R/W
6
0
STS1
Standby timer select 2 to 0
These bits select the
waiting time of the CPU
and peripheral functions
R/W
5
0
STS0
R/W
4
0
SYSCR
Abbreviation
MSTCRH
MSTCRL
Rev.4.00 Aug. 20, 2007 Page 459 of 638
User bit enable
R/W
UE
3
1
NMIEG
NMI edge select
R/W
2
0
R/W
R/W
R/W
R/W
18. Power-Down State
SSOE
Software standby
output port enable
R/W
REJ09B0395-0400
1
0
H'09
H'78
Initial Value
H'00
RAM enable
RAME
R/W
0
1