MC68HC08AZ0 Datasheet, PDF (65/444 Pages) Motorola, Inc – Advance Information

Freescale Semiconductor, Inc.
EEPROM
Functional description
EERAS1–EERAS0 — Erase bits
These read/write bits set the erase modes. Reset clears these bits.
Table 9. EEPROM program/erase mode select
EEBPx
0
0
0
0
1
EERAS1
EERA0
0
0
0
1
1
0
1
1
X
X
X = don’t care
MODE
Byte Program
Byte Erase
Block Erase
Bulk Erase
No Erase/Program
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.
9-eeprom
MOTOROLA
EEPROM
For More Information On This Product,
Go to: www.freescale.com
MC68HC08AZ0
63