MC908AZ32ACFUE Datasheet, PDF (59/324 Pages) Freescale Semiconductor, Inc – Microcontrollers

EEPROM Register Descriptions
Table 5-4. EEPROM Block Protection Bits
Block Number (EEBPx)
EEBP0
EEBP1
EEBP2
EEBP3
Address Range
$0800–$087F
$0880–$08FF
$0900–$097F
$0980–$09FF
Address Range
$0800 - $087F
$0880 - $08EF
$08F0 - $08FF
$0900 - $097F
$0980 - $09FF
Table 5-5. EEPROM Block Protect and Security Summary
EEBPx
EEBP0 = 0
EEBP0 = 1
EEBP1 = 0
EEBP1 = 1
EEBP1 = 0
EEBP1 = 1
EEBP2 = 0
EEBP2 = 1
EEBP3 = 0
EEBP3 = 1
EEPRTCT = 1
Byte Programming Available
Bulk, Block and Byte Erasing Available
Protected
Byte Programming Available
Bulk, Block and Byte Erasing Available
Protected
Byte Programming Available
Bulk, Block and Byte Erasing Available
Protected
Byte Programming Available
Bulk, Block and Byte Erasing Available
Protected
Byte Programming Available
Bulk, Block and Byte Available
Protected
EEPRTCT = 0
Byte Programming Available
Only Byte Erasing Available
Protected
Byte Programming Available
Only Byte Erasing Available
Protected
Secured
(No Programming or Erasing)
Byte Programming Available
Only Byte Erasing Available
Protected
Byte Programming Available
Only Byte Erasing Available
Protected
5.5.3 EEPROM Nonvolatile Register
The contents of this register is loaded into the EEPROM array configuration register (EEACR) after a
reset.
This register is erased and programmed in the same way as an EEPROM byte. (See 5.5.1 EEPROM
Control Register for individual bit descriptions).
Address: $FE1C
Bit 7
Read:
UNUSED
Write:
6
UNUSED
5
UNUSED
4
EEPRTCT
3
EEBP3
2
EEBP2
1
EEBP1
Reset:
PV
PV = Programmed value or 1 in the erased state.
Figure 5-4. EEPROM Nonvolatile Register (EENVR)
Bit 0
EEBP0
NOTE
The EENVR will leave the factory programmed with $F0 such that the full
array is available and unprotected.
MC68HC908AZ32A Data Sheet, Rev. 2
Freescale Semiconductor
59