MC68HC908JL8 MOTOROLA [Motorola, Inc], MC68HC908JL8 Datasheet - Page 57

• Manufacturer Part Number: MC68HC908JL8
• Description: Motorola reserves the right to make changes without further notice to any products herein
• Manufacturer: MOTOROLA [Motorola, Inc]

4.8.1 FLASH Block Protect Register
MC68HC908JL8
MOTOROLA
—
Rev. 2.0
Non-volatile FLASH register; write by programming.
Address:
The FLASH block protect register (FLBPR) is implemented as a byte
within the FLASH memory, and therefore can only be written during a
programming sequence of the FLASH memory. The value in this register
determines the starting location of the protected range within the FLASH
memory.
BPR[7:0] — FLASH Block Protect Bits
Reset:
Read:
Write:
Start address of FLASH block protect
BPR[7:0] represent bits [13:6] of a 16-bit memory address. Bits
[15:14] are logic 1’s and bits [5:0] are logic 0’s.
The resultant 16-bit address is used for specifying the start address
of the FLASH memory for block protection. The FLASH is protected
from this start address to the end of FLASH memory, at $FFFF. With
this mechanism, the protect start address can be XX00, XX40, XX80,
or XXC0 (at page boundaries — 64 bytes) within the FLASH memory.
Freescale Semiconductor, Inc.
For More Information On This Product,
Figure 4-4. FLASH Block Protect Register (FLBPR)
$FFCF
BPR7
Bit 7
Go to: www.freescale.com
FLASH Memory (FLASH)
BPR6
6
BPR5
5
Unaffected by reset; $FF when blank
BPR4
4
1 1
BPR3
3
16-bit memory address
BPR[7:0]
BPR2
FLASH Memory (FLASH)
2
FLASH Block Protection
BPR1
0 0 0 0 0 0
1
Technical Data
BPR0
Bit 0
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