MC68HC812A4 Datasheet, PDF (117/342 Pages) Motorola, Inc – 16-bit device composed of standard on-chip peripheral modules connected by an intermodule bus. Modules include

EEPROM
EEPROM Control Registers
7.4.4 EEPROM Programming Register
Address: $00F3
Bit 7
6
5
4
3
2
1
Bit 0
Read:
BULKP
0
Write:
0
BYTE ROW ERASE EELAT EEPGM
Reset: 1
0
0
0
0
0
0
0
Figure 7-5. EEPROM Programming Register (EEPROG)
Read: Anytime
Write: Varies from bit to bit
BULKP — Bulk Erase Protection Bit
1 = EEPROM protected from bulk or row erase
0 = EEPROM can be bulk erased.
Write anytime, if EEPGM = 0 and PROTLCK = 0
BYTE — Byte and Aligned Word Erase Bit
1 = One byte or one aligned word erase only
0 = Bulk or row erase enabled
Write anytime, if EEPGM = 0
ROW — Row or Bulk Erase Bit (when BYTE = 0)
1 = Erase only one 32-byte row
0 = Erase entire EEPROM array
Write anytime, if EEPGM = 0
BYTE and ROW have no effect when ERASE = 0.
Byte
0
0
1
1
Table 7-2. Erase Selection
Row
0
1
0
1
Block Size
Bulk erase entire EEPROM array
Row erase 32 bytes
Byte or aligned word erase
Byte or aligned word erase
Advance Information
MOTOROLA
EEPROM
MC68HC812A4 — Rev. 3.0
117