AN2156 Freescale Semiconductor / Motorola, AN2156 Datasheet - Page 32

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

Application Note
32
Freescale Semiconductor, Inc.
STEP 1
STEP 2
STEP 3
STEP 4
STEP 5
STEP 6
STEP 7
For More Information On This Product,
ERASE OPERATION COMPLETE
ADDRESS WITHIN THE RANGE
WRITE ANY DATA TO EEPROM
SET EERAS1 AND EERAS0
Figure 13. EEPROM Erasing Algorithm Flowcharts
t
EEBYTE
STANDARD ERASE
CLEAR EEPGM BIT
CLEAR EELAT BIT
WAIT TIME t
SET EEPGM BIT
FOR ERASE SIZE
TO BE ERASED
Go to: www.freescale.com
WAIT TIME
/t
SET EELAT
EEBLOCK
EEFPV
/t
EEBULK
STEP 1
STEP 2
STEP 3
STEP 4
STEP 5
ERASE OPERATION COMPLETE
ADDRESS WITHIN THE RANGE
WRITE ANY DATA TO EEPROM
SET EELAT AND AUTO BITS
SET EERAS1 AND EERAS0
EEPGM BIT CLEARED?
CLEAR EELAT BIT
FOR ERASE SIZE
SET EEPGM BIT
TO BE ERASED
AUTO ERASE
YES
NO
MOTOROLA
AN2156