AN2156 Freescale Semiconductor / Motorola, AN2156 Datasheet - Page 30

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

Application Note
Standard EEPROM Erase Operation
30
Address Range
$0880–$08EF
$0800–$087F
$0600–$067F
$08F0–$08FF
$06F0–$06FF
$0900–$097F
$0700–$077F
$0980–$09FF
$0780–$07FF
$0680–$06EF
(EEPROM-1 /
EEPROM-2)
Covered
EEBP0 = 0
EEBP0 = 1
EEBP1 = 0
EEBP1 = 1
EEBP1 = 0
EEBP1 = 1
EEBP2 = 0
EEBP2 = 1
EEBP3 = 0
EEBP3 = 1
Table 5. EEPROM Protection and Security Features
The EEPROM can be erased on a byte, block (128 bytes), or bulk array
(512 bytes) basis. If the block protection register shows the desired
erase region to be protected, erasing will fail. Therefore, first ensure that
the block protection feature is disabled for the relevant addresses.
This EEPROM erase operation is compatible with the
MC68HC908AS60/AZ60 EEPROM erase operation.
The flowchart for the standard EEPROM erase operation is included as
Figure
1. Clear/set EERAS1 and EERAS0 to select byte/block/bulk erase,
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For More Information On This Product,
Byte programming available
Bulk, block, and byte erasing available
Protected
Byte programming available
Bulk, block, and byte erasing available
Protected
Byte programming available
Bulk, block, and byte erasing available
Protected
Byte programming available
Bulk, block, and byte erasing available
Protected
Byte programming available
Bulk, block, and byte erasing available
Protected
and set EELAT in EExCR.
13.
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EEPRTCT = 1
Byte programming available
Only byte erasing available
Protected
Byte programming available
Only byte erasing available
Protected
Secure
Byte programming available
Only byte erasing available
Protected
Byte programming available
Only byte erasing available
Protected
(no erasing or programming)
EEPRTCT = 0
MOTOROLA
AN2156