AT88RF04C-WA1 Atmel, AT88RF04C-WA1 Datasheet - Page 33

• Manufacturer Part Number: AT88RF04C-WA1
• Manufacturer: Atmel

Specifications of AT88RF04C-WA1

• Lead Free Status / RoHS Status: Supplier Unconfirmed

6.7.
6.7.1. Operation
5276C–RFID–3/09
Write User Zone (Large Memory) Command [$c3]
The Write User Zone command writes data into the currently selected User Zone. This command format applies to the
AT88SC6416CRF device only.
The Write User Zone (Large Memory) command operates identically to the normal Write User Zone command, but
utilizes a two byte address to support large memory sizes. The Write User Zone command writes data in the device's
currently selected User Zone. As each byte is clocked in to the memory the lower bits of the address are internally
incremented. The upper address bits are not incremented, so the page address remains constant.
Write operations cannot cross page boundaries; a Write User Zone command can only write data bytes within a single
physical memory page. Attempts to write beyond the end of the page boundary will wrap to the beginning of the same
page. Only PICCs in the Active State are permitted to answer this command.
If Encryption Communication Security is active the DATA bytes are encrypted; no other bytes are encrypted. In the
Normal and Authentication Communication Security modes none of the bytes are encrypted.
PARAM = ADDR H
Echo Command >
Command >
AT88SC0808/1616/3216/6416CRF, AT88RF04C
CID
DATA “L+1”
DATA “L”
ADDR H
ADDR L
DATA 1
DATA 2
Reader
……….
CRC1
CRC2
“L”
$3
CID
ACK/NACK
STATUS
CRC1
CRC2
PICC
$3
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