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Memory Map of Data Carrier
<Example with 2KB Data
Carrier>
Canceling Write Protection
The SRAM-type Data Carrier has a built-in lithium battery which can combust or explode if mishandled.
Do not disassemble the Data Carrier, or subject it to high pressure or high temperatures (of 100°C or
more), or dispose of it by incineration.
With an 8KB Data Carrier, the last address is 1FFF.
Address
0000
0015
0120
07FF
1 byte
0000
07FF
0000
0006
07FF
Note The above example is when the memory capacity of the Data Carrier is 2 KB.
When the Data Carrier with an 8 KB memory is used, the last address is
1FFF.
To cancel write protection, clear the most significant bit of address 0002 to 0.
The write protection is canceled and both the start and end addresses speci-
fied in addresses 0002 through 0005 become invalid.
@
Write-protected area
Write-protected area
Write-protected area
End address
Start address
WARNING
Section 4-2
29
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