MC68HC708AS48 FREESCALE [Freescale Semiconductor, Inc], MC68HC708AS48 Datasheet - Page 75

• Manufacturer Part Number: MC68HC708AS48
• Description: Advance Information
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

MC68HC708AS48
MOTOROLA
NOTE:
—
Rev. 4.0
EERAS1:EERAS0 — EEPROM Erase Bits
EELAT — EEPROM Latch Control Bit
EEPGM — EEPROM Program/Erase Enable Bit
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.
Electrically Erasable Programmable ROM (EEPROM)
These read/write bits set the programming/erasing modes. Reset
clears these bits.
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.
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.
X = don’t care
1 = Buses configured for EEPROM programming
0 = Buses configured for normal read operation
1 = EEPROM programming/erasing power switched on
0 = EEPROM programming/erasing power switched off
EEBPx
Table 6-3. EEPROM Program/Erase Mode Select
0
0
0
0
1
EERAS1
X
0
0
1
1
Electrically Erasable Programmable ROM (EEPROM)
EERA0
X
0
1
0
1
No Erase/Program
Byte Program
Block Erase
Byte Erase
Bulk Erase
Functional Description
MODE
Advance Information
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