AT88SC1616CRF View Datasheet(PDF) - Atmel Corporation
Part Name
Description
MFG CO.
'AT88SC1616CRF' PDF : 158 Pages View PDF
6.3.2.
Command Field Descriptions
CID:
The Card ID assigned by the ATTRIB command.
PARAM:
The PARAM byte selects the type of read operation to be performed. PARAM = $00 selects the normal
Read User Zone command.
ADDR:
The starting address of the data to read.
L:
The number of bytes to read minus 1. L cannot exceed the size of the user zone.
Reading more than 64 bytes in a single operation is not recommended. In a typical application environment, optimal
transaction time is achieved by reading no more than 32 data bytes in a single operation.
CRC:
Communication error detection bytes.
6.3.3. 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.
DATA:
The data bytes read from user memory.
STATUS: PICC status code.
CRC:
Communication error detection bytes.
6.3.4. Error Handling
If a Read User Zone command containing transmission errors is received by the PICC, it is ignored and no response is
sent. The PICC reports errors in the status byte of the response.
Table 20. Status Codes returned in the Read User Zone response
Error/Status Message
No errors
Access Denied (User Zone Not Set)
PARAM Invalid
Address Invalid
Length Invalid
Authentication or Encryption Activation Required
Password Required
Memory Access Error
Status Code
$00
$99
$A1
$A2
$A3
$A9
$D9
$EE
Type
ACK
NACK
NACK
NACK
NACK
NACK
NACK
ACK/NACK
6.3.5. Notes
The Read User Zone command is identical for 88SC and 88RF CryptoRF PICCs when PARAM = $00.
24 AT88SC0808/1616/3216/6416CRF, AT88RF04C
5276C–RFID–3/09
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