MC68HC08AZ16 Datasheet, PDF (51/527 Pages) Motorola, Inc – HCMOS Microcontroller Unit

EEPROM
EERAS1-EERAS0 — Erase bits
These read/write bits set the erase modes. Reset clears these bits.
Table 3. EEPROM program/erase mode select
EEBPx
0
0
0
0
1
EERAS1
0
0
1
1
X
EERA0
0
1
0
1
X
X = don’t care
MODE
Byte Program
Byte Erase
Block Erase
Bulk Erase
No Erase/Pro-
gram
EELAT — EEPROM latch control
This read/write bit latches the address and data buses for
programming the EEPROM array. EELAT can not 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
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
NOTE:
Writing ‘0’s to both the EELAT and EEPGM bits with a single instruction
will only clear EEPGM. This is to allow time for the removal of high
voltage.
MC68HC08AZ32
50
EEPROM
10-eeprom
MOTOROLA