MC68HC908AS60ACFN FREESCALE [Freescale Semiconductor, Inc], MC68HC908AS60ACFN Datasheet - Page 68

• Manufacturer Part Number: MC68HC908AS60ACFN
• Description: M68HC08 Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

FLASH-2 Memory
68
Algorithm for programming
a row (64 bytes) of FLASH memory
NOTE:
The time between each FLASH address change (step 7 to step 7), or
the time between the last FLASH address programmed
to clearing PGM bit (step 7 to step 10)
must not exceed the maximum programming
time, t
This row program algorithm assumes the row/s
to be programmed are initially erased.
PROG
MC68HC908AZ60A • MC68HC908AS60A • MC68HC908AS60E Data Sheet, Rev. 6
max.
Figure 5-4. FLASH Programming Algorithm Flowchart
1
2
3
4
5
6
7
8
Read the FLASH block protect register
Write any data to any FLASH address
within the row address range desired
Write data to the FLASH address
to be programmed
Wait for a time, t
Wait for a time, t
Wait for a time, t
Set HVEN bit
programming
Set PGM bit
Completed
this row?
N
PROG
nvs
pgs
10
11
12
13
Y
End of programming
Wait for a time, t
Wait for a time, t
Clear HVEN bit
Clear PGM bit
Freescale Semiconductor
nvh
rcv