MC68HC08AS32 Datasheet, PDF (41/280 Pages) Motorola, Inc – M68HC08 Family of 8-bit microcontroller units (MCUs)

NOTE:
EEOFF — EEPROM Power Down Bit
This read/write bit disables the EEPROM module for lower power consumption.
Any attempts to access the array will give unpredictable results. Reset clears
this bit.
1 = Disable EEPROM array
0 = Enable EEPROM array
The EEPROM requires a recovery time, t_EEOFF, to stabilize after clearing the
EEOFF bit. Refer to for timing values.
EERAS1–EERAS0 — EEPROM Erase Bits
These read/write bits set the programming/erasing modes. Reset clears these
bits.
Table 2-4. EEPROM Program/Erase Mode Select
EEBPx
0
0
0
0
1
X = Don’t Care
EERAS1
0
0
1
1
X
EERA0
0
1
0
1
X
Mode
Byte program
Byte erase
Block erase
Bulk erase
No erase/program
NOTE:
EELAT — EEPROM Latch Control Bit
This read/write bit latches the address and data buses for programming the
EEPROM array. EELAT cannot be cleared if EEPGM is still set. Reset clears
this bit.
1 = Buses configured for EEPROM programming
0 = Buses configured for normal read operation
EEPGM — EEPROM Program/Erase Enable Bit
This read/write bit enables the internal charge pump and applies the
programming/erasing voltage to the EEPROM array if the EELAT bit is set and
a write to a valid EEPROM location has occurred. Reset clears the EEPGM bit.
1 = EEPROM programming/erasing power switched on
0 = EEPROM programming/erasing power switched off
Writing logic 0s to both the EELAT and EEPGM bits with a single instruction will
clear only EEPGM. This is to allow time for the removal of high voltage.
MC68HC08AS32 — Rev. 4.1
Freescale Semiconductor
Data Sheet
41