AT88RF04C_09 Datasheet, PDF (40/158 Pages) ATMEL Corporation – CryptoRF Specification

6.9.2.
Command Field Description
CID:
The Card ID assigned by the ATTRIB command.
PARAM:
The PARAM byte selects the type of write operation to be performed. 88RF PICCs do not support anti-
tearing writes to the configuration memory.
Table 33. PARAM byte options for the Write System Zone command
Command
PARAM
ADDR
“L”
Write System Zone
$00
Address
# of bytes – 1
Write System Zone w/ AT
$80
Address
# of bytes – 1
Write Fuse Byte
$01
Fuse addr
$00
All Other Values Are Not Supported
DATA
“L + 1” bytes
“L + 1 bytes”
1 byte
ADDR:
L:
The starting address of the data to write.
The number of bytes to read minus 1. L cannot exceed the physical page size of the memory. In anti-
tearing mode the maximum number of bytes that can be written is 8 bytes.
Table 34. Write Characteristics of CryptoRF Configuration Memory
CryptoRF
Part Number
Write Characteristics
Standard Write
Anti-Tearing Write
AT88RF04C
1 to 16 Bytes
Not Supported
AT88SC0808CRF
1 to 16 Bytes
1 to 8 Bytes
AT88SC1616CRF
1 to 16 Bytes
1 to 8 Bytes
AT88SC3216CRF
1 to 32 Bytes
1 to 8 Bytes
AT88SC6416CRF
1 to 32 Bytes
1 to 8 Bytes
DATA:
CRC:
The data bytes to be written into configuration memory.
Communication error detection bytes.
6.9.3.
Response Field Descriptions
CID:
The PICC transmits its assigned card ID in the response.
ACK:
Acknowledge, the command executed correctly.
NACK:
Not Acknowledge, the command did not execute correctly.
STATUS: PICC status code.
CRC:
Communication error detection bytes.
40 AT88SC0808/1616/3216/6416CRF, AT88RF04C
5276C–RFID–3/09