AN2156 Freescale Semiconductor / Motorola, AN2156 Datasheet - Page 19

• Manufacturer Part Number: AN2156
• Description: Programming and Erasing FLASH and EEPROM Memories on the MC68HC908AS60A/AZ60A
• Manufacturer: Freescale Semiconductor / Motorola

AN2156
MOTOROLA
Note: t
A to B or from A to C. This time must
be between 30 and 40 s.
Note: This page program routine
assumes that the row being pro-
grammed was initially erased.
Freescale Semiconductor, Inc.
PROG
For More Information On This Product,
is the total time from
Figure 4. FLASH Programming Algorithm Flowchart
Go to: www.freescale.com
STEP 1
STEP 2
STEP 3
STEP 4
STEP 5
STEP 6
STEP 7
STEP 8
STEP 9
STEP 13
STEP 10
STEP 11
STEP 12
FLASH PROGRAMMING
ADDRESS IN THE ROW
WRITE TO ANY FLASH
WRITE ONE DATA BYTE
TO A FLASH LOCATION
PROGRAM OPERATION
PROTECT REGISTER
READ THE BLOCK
PROGRAMMING
WAIT TIME t
WAIT TIME t
CLEAR HVEN BIT
WAIT TIME t
CLEAR PGM BIT
SET HVEN BIT
WAIT TIME t
WAIT TIME t
SET PGM BIT
COMPLETED
THIS ROW?
COMPLETE
A
C
YES
B
PROG
NVS
PGS
RCV
NVH
FLASH Program Operation
NO
Application Note
19