MC68HC812A4 Datasheet, PDF (115/342 Pages) Motorola, Inc – 16-bit device composed of standard on-chip peripheral modules connected by an intermodule bus. Modules include

7.4.2 EEPROM Block Protect Register
EEPROM
EEPROM Control Registers
Address: $00F1
Bit 7
6
5
4
3
2
1
Read:
1
Write:
BPROT6 BPROT5 BPROT4 BPROT3 BPROT2 BPROT1
Reset: 1
1
1
1
1
1
1
Figure 7-3. EEPROM Block Protect Register (EEPROT)
Bit 0
BPROT0
1
Read: Anytime
Write: Anytime if EEPGM = 0 and PROTLCK = 0
This register prevents accidental writes to EEPROM.
BPROT6–BPROT0 — EEPROM Block Protection Bit
0 = Associated EEPROM block can be programmed and erased.
1 = Associated EEPROM block is protected from being
programmed and erased.
These bits cannot be modified while programming is taking place
(EEPGM = 1).
Table 7-1. 4-Kbyte EEPROM Block Protection
Bit Name
BPROT6
BPROT5
BPROT4
BPROT3
BPROT2
BPROT1
BPROT0
Block Protected
$1000 to $17FF
$1800 to $1BFF
$1C00 to $1DFF
$1E00 to $1EFF
$1F00 to $1F7F
$1F80 to $1FBF
$1FC0 to $1FFF
Block Size
2048 bytes
1024 bytes
512 bytes
256 bytes
128 bytes
64 bytes
64 bytes
Advance Information
MOTOROLA
EEPROM
MC68HC812A4 — Rev. 3.0
115