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NOTE:
5.11.2 EEPROM Array Configuration Register
MC68HC908AB32
Rev. 1.0
—
MOTOROLA
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
Writing 0s 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.
The EEPROM array configuration register configures EEPROM security
and EEPROM block protection.
This read-only register is loaded with the contents of the EEPROM non-
volatile register (EENVR) after a reset.
Address:
$FE1F
Bit 7
6
Read:
CON3
CON2
Write:
Reset:
Figure 5-3. EEPROM Array Configuration Register (EEACR)
CON[3:1] — Unused
EEPRTCT — EEPROM Protection Bit
The EEPRTCT bit is used to enable the security feature in the
EEPROM (see
5.7 EEPROM Security
1 = EEPROM security disabled
0 = EEPROM security enabled
5
4
CON1
EEPRTCT
Contents of EENVR ($FE1C)
EEPROM
EEPROM Registers
3
2
1
EEBP3
EEBP2
EEBP1
Options).
Technical Data
EEPROM
Bit 0
EEBP0
79
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