mc68hc908ld64 Freescale Semiconductor, Inc, mc68hc908ld64 Datasheet - Page 71

• Manufacturer Part Number: mc68hc908ld64
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

MC68HC908LD64
Freescale Semiconductor
Algorithm for programming
a row (64 bytes) of FLASH memory
NOTE:
The time between each FLASH address change (step 6 to step 6), or
the time between the last FLASH address programmed
to clearing PGM bit (step 6 to step 9)
must not exceed the maximum programming
time, t
This row program algorithm assumes the row/s
to be programmed are initially erased.
PROG
—
max.
Rev. 3.0
6
For 47,616 bytes array
Figure 4-5. FLASH Programming Flowchart
Write data to the FLASH address
to be programmed
1
2
3
4
5
7
FLASH Memory
Write any data to any FLASH address
within the row address range desired
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
For 13K-bytes array
9
10
11
12
Write even byte to OSD FLASH Even
High Byte Write Buffer at $0066.
Write odd byte to the FLASH address
to be programmed.
Y
End of Programming
Wait for a time, t
Wait for a time, t
Clear HVEN bit
Clear PGM bit
FLASH Program Operation
nvh
rcv
FLASH Memory
Data Sheet
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