s908qc16vdse Freescale Semiconductor, Inc, s908qc16vdse Datasheet - Page 40

• Manufacturer Part Number: s908qc16vdse
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Memory
40
NOTES:
Algorithm for Programming
a Row (32 Bytes) of FLASH Memory
The time between each FLASH address change (step 7 to step 7 loop),
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.
MC68HC908QC16 • MC68HC908QC8 • MC68HC908QC4 Data Sheet, Rev. 4
Figure 2-4. FLASH Programming Flowchart
2
1
3
4
5
6
7
8
READ THE FLASH BLOCK PROTECT REGISTER
WITHIN THE ROW ADDRESS RANGE DESIRED
WRITE ANY DATA TO ANY FLASH ADDRESS
9
WRITE DATA TO THE FLASH ADDRESS
WAIT FOR A TIME, t
TO BE PROGRAMMED
WAIT FOR A TIME, t
WAIT FOR A TIME, t
PROGRAMMING
SET HVEN BIT
SET PGM BIT
COMPLETED
THIS ROW?
N
PROG
10
11
12
13
NVS
PGS
Y
END OF PROGRAMMING
WAIT FOR A TIME, t
WAIT FOR A TIME, t
CLEAR HVEN BIT
CLEAR PGM BIT
Freescale Semiconductor
NVH
RCV