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8XC196MC, MD, MH USER'S MANUAL
CCR1, CCR0
The chip configuration registers (CCRs) control wait states, powerdown mode, and internal memory
protection. These registers are loaded from the PCCBs during programming modes and from the CCBs
for normal operation.
7
1
1
7
LOC1
LOC0
Bit Mnemonic
WDE
BW1
IRC2
LOC1:0
IRC1:0
ALE
WR
BW0
PD
Figure 16-6. Chip Configuration Registers (CCRs)
16-18
0
1
IRC1
IRC0
Watchdog Timer Enable
PCCB default is initially disabled (enabled the first time WDT is cleared).
Buswidth Control
PCCB default selects BUSWIDTH pin control.
Internal Ready Control
PCCB default selects READY pin control.
Security Bits
PCCB default selects no protection.
Internal Ready Control
PCCB default selects READY pin control.
Select Address Valid Strobe Mode
PCCB default selects ALE.
Select Write Strobe Mode
PCCB default selects WR# and BHE#.
Buswidth Control
PCCB default selects BUSWIDTH pin control.
Powerdown Enable
PCCB default enables powerdown.
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WDE
BW1
ALE
WR
Function
no direct access
0
IRC2
0
0
BW0
PD
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