MC68HC908JK3EMP MOTOROLA [Motorola, Inc], MC68HC908JK3EMP Datasheet - Page 46
MC68HC908JK3EMP
Manufacturer Part Number
MC68HC908JK3EMP
Description
Microcontrollers
Manufacturer
MOTOROLA [Motorola, Inc]
Datasheet
1.MC68HC908JK3EMP.pdf
(226 pages)
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FLASH Memory (FLASH)
4.5 FLASH Page Erase Operation
Technical Data
46
NOTE:
Use the following procedure to erase a page of FLASH memory. A page
consists of 64 consecutive bytes starting from addresses $XX00,
$XX40, $XX80 or $XXC0. The 48-byte user interrupt vectors area also
forms a page. Any page within the 4K bytes user memory area
($EC00–$FBFF) can be erased alone. The 48-byte user interrupt
vectors cannot be erased by the page erase operation because of
security reasons. Mass erase is required to erase this page.
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.
1. Set the ERASE bit and clear the MASS bit in the FLASH Control
2. Write any data to any FLASH address within the page address
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.
range desired.
again.
FLASH Memory (FLASH)
rcv
(1µs)
Erase
nvs
nvh
,
(10µs).
(5µs).
the memory can be accessed in read mode
(1ms).
MC68H(R)C908JL3E/JK3E/JK1E
MOTOROLA
—
Rev. 2.0
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