mc68hc908bd48 Freescale Semiconductor, Inc, mc68hc908bd48 Datasheet - Page 58

• Manufacturer Part Number: mc68hc908bd48
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

FLASH Memory
4.6 FLASH Mass Erase Operation
Data Sheet
58
NOTE:
NOTE:
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 as shown, but other unrelated operations
may occur between the steps.
Use the following procedure to erase entire FLASH memory:
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 as shown, but other unrelated operations
may occur between the steps.
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 a time, t
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
read mode.
register.
address range.
mode.
FLASH Memory
rcv
rcv
(1µs)
(min. 1µs), the memory can be accessed again in
Erase
nvh
nvs
MErase
nvhl
,
(5µs).
(min. 5µs)
(100µs).
the memory can be accessed again in read
(min. 2ms)
(4ms).
MC68HC908BD48
Freescale Semiconductor
—
Rev. 2.1