mc68hc908ld64 Freescale Semiconductor, Inc, mc68hc908ld64 Datasheet - Page 73

• Manufacturer Part Number: mc68hc908ld64
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

MC68HC908LD64
Freescale Semiconductor
—
Rev. 3.0
BPR[7:1] — FLASH Block Protect Bits
BPR1[7:1] — FLASH Block Protect Bits
Examples of block protection for 47,616-byte FLASH memory array:
and so on...
Start address of FLASH block protect
These seven bits represent bits [15:9] of a 16-bit memory address.
Bits [8:0] are logic 0s.
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.
These seven bits represent bits [15:9] of a 16-bit memory address.
Bits [8:0] are logic 0s.
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 $3FFF.
$F8 (1111 1000)
$42 (0100 0010)
$44 (0100 0100)
BPR[7:0]
$00–3E
$FC
$FE
$FA
$40
Figure 4-8. FLASH Block Protect Start Address
FLASH Memory
The entire 47,616 bytes FLASH memory is not protected.
The entire 47,616 bytes of FLASH memory is protected.
$4200 (0100 0010 0000 0000) to $FFFF
$4400 (0100 0100 0000 0000) to $FFFF
$F800 (1111 1000 0000 0000) to $FFFF
FLASH Memory Protected Range
$FFE0 to $FFFF (FLASH Vectors)
$FFE0 to $FFFF (FLASH Vectors)
$FFE0 to $FFFF (FLASH Vectors)
BPR[7:1]
16-bit memory address
FLASH Block Protection
0 0 0 0 0 0 0 0 0
0
FLASH Memory
Data Sheet
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