MC68HC908AS60ACFN FREESCALE [Freescale Semiconductor, Inc], MC68HC908AS60ACFN Datasheet - Page 63

• Manufacturer Part Number: MC68HC908AS60ACFN
• Description: M68HC08 Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

FL2BPR[7:0] — Block Protect Register Bit 7 to Bit 0
FLASH-2 Protected Ranges:
Freescale Semiconductor
These eight bits represent bits [14:7] of a 16-bit memory address. Bit 15 is logic 1 and bits [6:0] are
logic 0s.
The resultant 16-bit address is used for specifying the start address of the FLASH-2 memory for block
protection. FLASH-2 is protected from this start address to the end of FLASH-2 memory at $7FFF.
With this mechanism, the protect start address can be $XX00 and $XX80 (128 byte page boundaries)
within the FLASH-2 array.
Address:
The FLASH-2 Block Protect Register (FL2BPR) controls the block
protection for the FLASH-2 array. However, FL2BPR is implemented within
the FLASH-1 memory array and therefore, the FLASH-1 Control Register
(FL1CR) must be used to program/erase FL2BPR.
Read:
Write:
Start address of FLASH block protect
MC68HC908AZ60A • MC68HC908AS60A • MC68HC908AS60E Data Sheet, Rev. 6
$FF81
Figure 5-2. FLASH-2 Block Protect Register (FL2BPR)
BPR7
Bit 7
Figure 5-3. FLASH-2 Block Protect Start Address
FL2BPR[7:0]
$FF
$FE
$FD
$0B
$0A
$09
$08
$04
$03
$02
$01
$00
BPR6
6
BPR5
5
1
NOTE
BPR4
4
FLBPR value
Protected Range
$7E80 – $7FFF
$7F00 – $7FFF
$0580 – $7FFF
$0500 – $7FFF
$0480 – $7FFF
$0450 – $7FFF
$0450 – $7FFF
$0450 – $7FFF
$0450 – $7FFF
$0450 – $7FFF
$0450 – $7FFF
16-bit memory address
No Protection
BPR3
3
FLASH-2 Control and Block Protect Registers
BPR2
0 0 0 0 0 0 0
2
BPR1
1
BPR0
Bit 0
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