MC68HC908KX8 Datasheet, PDF (56/310 Pages) Motorola, Inc – Microcontrollers

FLASH Memory
Algorithm for programming
1
a row (32 bytes) of FLASH memory
2
SET PGM BIT
READ THE FLASH BLOCK
PROTECT REGISTER
3 WRITE ANY DATA TO ANY FLASH ADDRESS
WITHIN THE ROW ADDRESS RANGE DESIRED
4
WAIT FOR A TIME, t_NVS
5
SET HVEN BIT
6
WAIT FOR A TIME, t_PGS
7
WRITE DATA TO THE FLASH ADDRESS
TO BE PROGRAMMED
8
WAIT FOR A TIME, t_PROG
COMPLETED
YES
PROGRAMMING
THIS ROW?
NO
10
CLEAR PGM BIT
11
Notes:
12
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
13
time, t_PROG maximum.
This row program algorithm assumes the row/s
to be programmed are initially erased.
WAIT FOR A TIME, t_NVH
CLEAR HVEN BIT
WAIT FOR A TIME, t_RCV
END OF PROGRAMMING
Figure 4-2. FLASH Programming Flowchart
Technical Data
56
MC68HC908KX8 • MC68HC908KX2 • MC68HC08KX8 — Rev. 1.0
FLASH Memory
MOTOROLA