477
16.2
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
SSOE
0
R/W
0
RAME
1
R/W
Software standby
Standby timer select 2 to 0
User bit enable
NMI edge select
Software standby
output port enable
RAM enable bit
Enables or
disables
on-chip RAM
One function of 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 (SYSCR).
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)
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