ACS AET62 NFC Reader with Fingerprint Sensor - Manual (Page 16)

6.4. Update Binary Blocks
The “Update Binary Blocks command” is used for writing “data blocks” into the PICC. The data
block/trailer block must be authenticated.
Command
Class INS P1 P2 Lc Data In
Update
Binary
Blocks FF D6 00 Block
Number
Number
of
Bytes
to
Update
Block Data
4 Bytes for
Mifare
Ultralight
or
16 Bytes for
Mifare 1K/4K
Table 19: Update Binary APDU Format (4 or 16 + 5 Bytes)
where:
Block Number (1 Byte):The starting block to be updated.
Number of Bytes to Update (1 Byte):
 16 bytes for Mifare 1K/4K
 4 bytes for Mifare Ultralight.
Block Data (4 or 16 Bytes):
The data to be written into the binary block/blocks.
Results SW1 SW2 Meaning
Success 90 00
The operation completed
successfully.
Error
63 00 The operation failed.
Table 20: Update Binary Block Response Codes (2 Bytes)
Example:
1. Update the binary block
0x04 of Mifare 1K/4K with Data {00 01 .. 0F}
APDU = {FF D6 00 04 10 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E
0F }
2. Update the binary block 0x04 of Mifare Ultralight with Data {00 01 02 03}
APDU = {FF D6 00 04 04 00 01 02 03 }
6.5. Value Block Related Commands
The data block can be used as value block for implementing value-based applications.
6.5.1. Value Block Operation
The “Value Block Operation command” is used for manipulating value-based transactions. E.g.
Increment a value of the value block etc.
Command
Class INS P1 P2 Lc Data In
Value
Block
Operation FF D7 00 Block
Number
05 VB_OP VB_Value
(4 Bytes)
{MSB .. LSB}
Table 21: Value Block Operation APDU Format (10 Bytes)
Block Number (1 Byte): The value block to be manipulated.
VB_OP (1 Byte):
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