MC68HC908AB32 MOTOROLA [Motorola, Inc], MC68HC908AB32 Datasheet - Page 62

• Manufacturer Part Number: MC68HC908AB32
• Description: HCMOS Microcontroller Unit
• Manufacturer: MOTOROLA [Motorola, Inc]

FLASH Memory
4.6 FLASH Mass Erase Operation
Technical Data
62
NOTE:
NOTE:
While these operations must be performed in the order shown, other
unrelated operations may occur between the steps.
Use this step-by-step procedure to erase entire FLASH memory to read
as logic 1:
* When in Monitor mode, with security sequence failed
block protect register instead of any FLASH address.
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.
10. After a time, t
10. After a time, t
9. Clear the HVEN bit.
1. Set both the ERASE bit, and the MASS bit in the FLASH control
2. Read from 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.
Freescale Semiconductor, Inc.
For More Information On This Product,
read mode.
register.
address range.
read mode.
Go to: www.freescale.com
FLASH Memory
rcv
rcv
(min. 1 s), the memory can be accessed again in
(typ. 1 s), the memory can be accessed again in
nvs
MErase
nvhl
(min. 10 s)
(min. 100 s)
(min. 4ms)
(see 10.5
MC68HC908AB32
Security), write to the FLASH
MOTOROLA
—
Rev. 1.0