mc68hc908gr8vp Freescale Semiconductor, Inc, mc68hc908gr8vp Datasheet - Page 113

• Manufacturer Part Number: mc68hc908gr8vp
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Freescale Semiconductor
Algorithm for programming
a row (32 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
max.
Figure 11-2. FLASH Programming Flowchart
MC68HC908GR8 • MC68HC908GR4 Data Sheet, Rev. 7
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
FLASH Program/Read Operation
End of programming
Wait for a time, t
Wait for a time, t
Clear HVEN bit
Clear PGM bit
nvh
rcv
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