HD6413008VF25 Datasheet, PDF (103/688 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

3. MCU Operating Modes
MDS0 are read-only bits. The mode pin (MD₂ to MD₀) levels are latched into these bits when
MDCR is read.
3.3 System Control Register (SYSCR)
SYSCR is an 8-bit register that controls the operation of the H8/3008.
Bit
Initial value
Read/Write
7
SSBY
0
R/W
6
STS2
0
R/W
5
STS1
0
R/W
4
STS0
0
R/W
3
2
1
0
UE NMIEG SSOE RAME
1
0
0
1
R/W
R/W
R/W
R/W
RAM enable
Enables or
disables
on-chip RAM
Software standby
output port enable
Selects the output state
of the address bus and
bus control signals in
software standby mode
NMI edge select
Selects the valid edge
of the NMI input
User bit enable
Selects whether to use the UI bit in CCR
as a user bit or an interrupt mask bit
Standby timer select 2 to 0
These bits select the waiting time at
recovery from software standby mode
Software standby
Enables transition to software standby mode
Rev.4.00 Aug. 20, 2007 Page 57 of 638
REJ09B0395-0400