431
14.2 System Control Register (SYSCR)
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
UE
1
R/W
2
NMIEG
0
R/W
1
—
1
—
0
RAME
1
R/W
Software standby
Standby timer select 2 to 0
User bit enable
NMI edge select
Reserved bit
RAM enable bit
Enables or
disables
on-chip RAM
SYSCR is to enable or disable access to the on-chip RAM. The on-chip RAM is enabled or
disabled by the RAME bit in SYSCR. For details about the other bits, see section 3.3, System
Control Register.
Bit 0—RAM Enable (RAME): Enables or disables the on-chip RAM. The RAME bit is
initialized at the rising edge of the input at the
RES
pin. It is not initialized in software standby
mode.
Bit 0
RAME
Description
0
On-chip RAM is disabled
1
On-chip RAM is enabled
(Initial value)