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| MC68HC908GP32 Datasheet, PDF (173/410 Pages) Motorola, Inc – M68HC08 Family of 8-bit microcontroller units (MCUs) | |||
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Freescale Semiconductor, Inc.
FLASH Memory
FLASH Block Protection
Algorithm for programming
a row (64 bytes) of FLASH memory
1
Set PGM bit
2 Read the FLASH block protect register
3 Write any data to any FLASH address
within the row address range desired
4
Wait for a time, tnvs
5
Set HVEN bit
6
Wait for a time, tpgs
7
Write data to the FLASH address
to be programmed
8
Wait for a time, tPROG
Completed
Y
programming
this row?
N
10
NOTE:
The time between each FLASH address change (step 7 to step 7), or
the time between the last FLASH address programmed
11
to clearing PGM bit (step 7 to step 10)
must not exceed the maximum programming
time, tPROG max.
12
This row program algorithm assumes the row/s
to be programmed are initially erased.
13
Clear PGM bit
Wait for a time, tnvh
Clear HVEN bit
Wait for a time, trcv
End of programming
Figure 11-2. FLASH Programming Flowchart
MC68HC908GP32â¢MC68HC08GP32 â Rev. 6
MOTOROLA
FLASH Memory
For More Information On This Product,
Go to: www.freescale.com
Technical Data
171
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