mc68hc908lj24 Freescale Semiconductor, Inc, mc68hc908lj24 Datasheet - Page 73

• Manufacturer Part Number: mc68hc908lj24
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

4.6 FLASH Mass Erase Operation
MC68HC908LJ24/LK24 — Rev. 2.1
Freescale Semiconductor
NOTE:
Use the following procedure to erase the entire FLASH memory:
Programming and erasing of FLASH locations cannot be performed by
code being executed from the FLASH memory; the code must be
executed from RAM. While these operations must be performed in the
order as shown, but other unrelated operations may occur between the
steps.
10. After time, t
1. Set both the ERASE bit and the MASS bit in the FLASH control
2. Read the FLASH block protect register.
3. Write any data to any FLASH address within the FLASH memory
4. Wait for a time, t
5. Set the HVEN bit.
6. Wait for a time t
7. Clear the ERASE bit.
8. Wait for a time, t
9. Clear the HVEN bit.
register.
address range.
mode.
FLASH Memory (FLASH)
rcv
(1µs), the memory can be accessed again in read
merase
nvs
nvh1
(10µs).
(100µs).
(4ms).
FLASH Mass Erase Operation
FLASH Memory (FLASH)
Data Sheet
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