mc68hc908bd48 Freescale Semiconductor, Inc, mc68hc908bd48 Datasheet - Page 60

• Manufacturer Part Number: mc68hc908bd48
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

FLASH Memory
Data Sheet
60
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 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.
Figure 4-2. FLASH Programming Flowchart
1
2
3
4
5
6
7
FLASH Memory
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
pgs
nvs
9
10
11
12
Y
End of programming
MC68HC908BD48
Wait for a time, t
Wait for a time, t
Clear HVEN bit
Clear PGM bit
Freescale Semiconductor
nvh
rcv
—
Rev. 2.1