Configuration Register (CONFIG)
MC68HC908GT16 MC68HC908GT8 MC68HC08GT16 Data Sheet, Rev. 5.0
60
Freescale Semiconductor
LVIPWRD — LVI Power Disable Bit
LVIPWRD disables the LVI module. See
Chapter 10 Low-Voltage Inhibit (LVI)
.
1 = LVI module power disabled
0 = LVI module power enabled
LVI5OR3 — LVI 5-V or 3-V Operating Mode Bit
LVI5OR3 selects the voltage operating mode of the LVI module. See
Chapter 10 Low-Voltage Inhibit
(LVI)
The voltage mode selected for the LVI should match the operating V
DD
. See
Chapter 20
Electrical Specifications
for the LVI’s voltage trip points for each of the modes.
1 = LVI operates in 5-V mode.
0 = LVI operates in 3-V mode.
NOTE
The LVI5OR3 bit is cleared by a power-on reset (POR) only. Other resets
will leave this bit unaffected.
SSREC — Short Stop Recovery Bit
SSREC enables the CPU to exit stop mode with a delay of 32 CGMXCLK cycles instead of a
4096-CGMXCLK cycle delay.
1 = Stop mode recovery after 32 CGMXCLK cycles
0 = Stop mode recovery after 4096 CGMXCLCK cycles
NOTE
Exiting stop mode by an LVI reset will result in the long stop recovery.
The short stop recovery delay can be enabled when using the internal oscillator, a crystal, or a ceramic
resonator and the OSCENINSTOP bit is set. The short stop recovery delay can be enabled when an
external oscillator is used, regardless of the OSCENINSTOP setting.
The short stop recovery delay must be disabled (SSREC = 0) when the OSCENINSTOP bit is cleared.
STOP — STOP Instruction Enable Bit
STOP enables the STOP instruction.
1 = STOP instruction enabled
0 = STOP instruction treated as illegal opcode
COPD — COP Disable Bit
COPD disables the COP module. See
Chapter 5 Computer Operating Properly (COP) Module
.
1 = COP module disabled
0 = COP module enabled