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AN1241D Datasheet(PDF) 6 Page - Freescale Semiconductor, Inc

Part # AN1241D
Description  Interfacing the MC68HC705J1A to 9356/9366 EEPROMs
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

AN1241D Datasheet(HTML) 6 Page - Freescale Semiconductor, Inc

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AN1241/D
6
APPENDIX B
JSR J9356_EWEN
ERASE/WRITE
ENABLE THE EEPROM
MAIN ROUTINE TEST
TEST1 =
$AA?
INITIALIZE PORT A
FOR BIT
PROGRAMMING
LED IS OFF
ADDR = $00
DATA_H = $AA
DATA_L = $55
JSR J9356_ERAL
ERASE ALL THE
EEPROM
JSR J9356_WRITE
WRITE DATA TO
EEPROM ADDRESS
TEST1 = DATA_H
TEST2 = DATA_L
ADDR = $00
TEST2 =
$55?
TEST3 =
$12?
TEST4 =
$34?
LED IS ON
TEST PASSED
KICK THE
WDOG
ADDR = $00
DATA_H = $12
DATA_L = $34
JSR J9356_WRITE
WRITE DATA TO
EEPROM ADDRESS
ADDR = $20
JSR J9356_READ
READ DATA FROM
EEPROM ADDRESS
TEST3 = DATA_H
TEST4 = DATA_L
JSR J9356_READ
READ DATA FROM
EEPROM ADDRESS
NO
NO
NO
NO
YES
YES
YES
YES
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com


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