AN2156 Freescale Semiconductor / Motorola, AN2156 Datasheet - Page 27

• Manufacturer Part Number: AN2156
• Description: Programming and Erasing FLASH and EEPROM Memories on the MC68HC908AS60A/AZ60A
• Manufacturer: Freescale Semiconductor / Motorola

AN2156
MOTOROLA
NOTE:
NOTE:
Bits 7:5 — Unused Bits
EEPRTCT — EEPROM Program/Erase Protection Bit
This feature is a write-once feature. Once the protection is enabled, it
cannot be disabled.
EEBP3–EEBP0 — EEPROM Block Protection Bits
These read/write bits select blocks of EEPROM array from being
programmed or erased. Reset loads EEBP[3:0] from EExNVR to
EExACR.
The configuration in the EExNVRs can be changed by programming or
erasing. The new configuration will take effect with a reset or a read of
the EExNVR.
EEBP0 = 1
EEBP1 = 1
EEBP2 =1
EEBP3 =1
This one-time programmable bit can be used to protect 16 bytes
(EEPROM-1: $8F0–$8FF and EEPROM-2: $6F0–$6FF) from being
erased or programmed.
Freescale Semiconductor, Inc.
For More Information On This Product,
1 = EEPROM program/erase protection disabled
0 = EEPROM program/erase protection enabled
1 = EEPROM array block is protected.
0 = EEPROM array block is unprotected.
Go to: www.freescale.com
$0880–$08FF
$0980–$09FF
$0800–$087F
$0900–$097F
EEPROM-1
EEPROM Control and Configuration Registers
$0600–$067F
$0680–$06FF
$0700–$077F
$0780–$07FF
EEPROM-2
Application Note
27