MC68HC908AB32 MOTOROLA [Motorola, Inc], MC68HC908AB32 Datasheet - Page 79

• Manufacturer Part Number: MC68HC908AB32
• Description: HCMOS Microcontroller Unit
• Manufacturer: MOTOROLA [Motorola, Inc]

5.11.2 EEPROM Array Configuration Register
MC68HC908AB32
MOTOROLA
NOTE:
—
Rev. 1.0
Address:
EEPGM — EEPROM Program/Erase Enable
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.
CON[3:1] — Unused
EEPRTCT — EEPROM Protection Bit
Reset:
Read:
Write:
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.
The EEPRTCT bit is used to enable the security feature in the
EEPROM (see
Freescale Semiconductor, Inc.
Figure 5-3. EEPROM Array Configuration Register (EEACR)
For More Information On This Product,
1 = EEPROM programming/erasing power switched on
0 = EEPROM programming/erasing power switched off
1 = EEPROM security disabled
0 = EEPROM security enabled
$FE1F
CON3
Bit 7
Go to: www.freescale.com
CON2
6
5.7 EEPROM Security
EEPROM
CON1
5
Contents of EENVR ($FE1C)
EEPRTCT
4
EEBP3
Options).
3
EEBP2
2
EEPROM Registers
EEBP1
1
Technical Data
EEPROM
EEBP0
Bit 0
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