MC68HC908AB32 Datasheet, PDF (80/392 Pages) Motorola, Inc – HCMOS Microcontroller Unit

EEPROM
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 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.
5.11.2 EEPROM Array Configuration Register
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: $FE1F
Bit 7
Read: CON3
Write:
Reset:
6
CON2
5
CON1
4
EEPRTCT
3
EEBP3
2
EEBP2
1
EEBP1
Bit 0
EEBP0
Contents of EENVR ($FE1C)
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 Options).
1 = EEPROM security disabled
0 = EEPROM security enabled
Technical Data
80
EEPROM
MC68HC908AB32 — Rev. 1.1
Freescale Semiconductor