AN2156 Freescale Semiconductor / Motorola, AN2156 Datasheet - Page 69

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

AN2156
MOTOROLA
Freescale Semiconductor, Inc.
STEP 1
STEP 2
STEP 3
STEP 4
t
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COPY DATA BYTE FROM RAM
EEPGM
CALL WriteEECR TO SET UP
BUFFER TO EEPROM_addr
CALL ms_delay TO WAIT
DISABLE INTERRUPTS
EERAS0/EERAS1 BITS
AND SET EELAT BIT
TO SET EEPGM BIT
/t
CALL WriteEECR
Figure 22. Subroutine EEPROMroutine Flowchart
EEBYTE
EEPROMroutine
(EEPROM.srt)
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/t
EEBLOCK
/t
EEBULK
Standard EEPROM Assembly Source Code Flowcharts
STEP 5
STEP 6
STEP 7
CLEAR ALL BITS IN EExCR
CALL WriteEECR TO CLEAR
ENABLE INTERRUPTS
TO CLEAR EEPGM BIT
WAIT FOR TIME t
CALL WriteEECR
EELAT BIT
RETURN
Application Note
EEFPV
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