mc68hc908kx8 Freescale Semiconductor, Inc, mc68hc908kx8 Datasheet - Page 33
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mc68hc908kx8
Manufacturer Part Number
mc68hc908kx8
Description
M68hc08 Microcontrollers
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC908KX8.pdf
(210 pages)
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2.8 FLASH Mass Erase Operation
Use the following procedure to erase the entire FLASH memory to read as a 1:
Freescale Semiconductor
10. After time, t
1. When in monitor mode, with security sequence failed (see
1. Set both the ERASE bit and the MASS bit in the FLASH control register.
2. Read the FLASH block protect register.
3. Write any data to any FLASH address
4. Wait for a time, t
5. Set the HVEN bit.
6. Wait for a time, t
7. Clear the ERASE and MASS bits.
8. Wait for a time, t
9. Clear the HVEN bit.
stead of any FLASH address.
Mass erase is disabled whenever any block is protected (FLBPR does not
equal $FF).
Programming and erasing of FLASH locations cannot be performed by
code being executed from the FLASH memory. While these operations
must be performed in the order shown, other unrelated operations may
occur between the steps.
RCV
MC68HC908KX8 • MC68HC908KX2 • MC68HC08KX8 Data Sheet, Rev. 2.1
(typical 1 µs), the memory can be accessed in read mode again.
NVS
MErase
NVHL
(minimum 10 µs).
(minimum 100 µs).
(minimum 4 ms).
(1)
within the FLASH memory address range.
NOTE
NOTE
16.3.2
Security), write to the FLASH block protect register in-
FLASH Mass Erase Operation
33
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