AN2156 Freescale Semiconductor / Motorola, AN2156 Datasheet - Page 53
![no-image](/images/no-image-200.jpg)
AN2156
Manufacturer Part Number
AN2156
Description
Programming and Erasing FLASH and EEPROM Memories on the MC68HC908AS60A/AZ60A
Manufacturer
Freescale Semiconductor / Motorola
Datasheet
1.AN2156.pdf
(84 pages)
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AN2156
MOTOROLA
STEP 1
STEP 2
STEP 3
STEP 4
STEP 5
Freescale Semiconductor, Inc.
For More Information On This Product,
WRITE TO FLASH_addr
WITH ANY DATA VALUE
DISABLE INTERRUPTS
PROTECT REGISTERS
READ FLASH BLOCK
CALL WriteFLCR TO
CALL WriteFLCR TO
WAIT FOR TIME t
SET ERASE BIT
SET HVEN BIT
(SSTflash.srt)
FlashErase
Figure 17. Subroutine FlashErase Flowchart
Go to: www.freescale.com
NVS
STEP 6
STEP 7
STEP 8
WAIT FOR TIME t
CALL WriteFLCR TO
CLEAR ERASE BIT
CALL ms_delay TO
WAIT t
FLASH Assembly Source Code Flowcharts
MERASE
MASS ERASE
STEP 10
NVHL
STEP 9
ENABLE INTERRUPTS
WAIT FOR TIME t
CALL WriteFLCR TO
OR MASS ERASE?
CLEAR HVEN BIT
PAGE ERASE
RETURN
STEP 6
STEP 7
STEP 8
RCV
WAIT FOR TIME t
CALL WriteFLCR TO
CLEAR ERASE BIT
CALL ms_delay TO
Application Note
WAIT t
ERASE
PAGE ERASE
NVH
53
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