mc68hc908sr12 Freescale Semiconductor, Inc, mc68hc908sr12 Datasheet - Page 67

• Manufacturer Part Number: mc68hc908sr12
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

4.6 FLASH Mass Erase Operation
MC68HC908SR12•MC68HC08SR12 — Rev. 5.0
Freescale Semiconductor
NOTE:
Use the following procedure to erase the entire FLASH memory to read
as logic 1:
Programming and erasing of FLASH locations cannot be performed by
executing code 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.
1. Set both the ERASE bit and the MASS bit in the FLASH control
2. Write any data to any FLASH address within the FLASH memory
3. Wait for a time, t
4. Set the HVEN bit.
5. Wait for a time t
6. Clear the ERASE bit.
7. Wait for a time, t
8. Clear the HVEN bit.
9. After time, t
register.
address range.
mode.
FLASH Memory
rcv
(1µs), the memory can be accessed again in read
MErase
nvs
nvhl
(10µs).
(100µs).
(4ms).
FLASH Mass Erase Operation
FLASH Memory
Data Sheet
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