AT88RF04C-WA1 Atmel, AT88RF04C-WA1 Datasheet - Page 6

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

Specifications of AT88RF04C-WA1

• Lead Free Status / RoHS Status: Supplier Unconfirmed

6
Each byte contains one or more fields as indicated by lines drawn vertically within the byte. The field in the left half of
the byte is the upper nibble of the byte, and the field to the right is the lower nibble of the byte. In Figure 2, five fields
contain values ($1D, $00, $F, $51, $0), four fields contain field names (“Addr”, “XX”, “CID”, “Data”), and four fields
contain error detection codes (CRC1, CRC2).
Figure 2.
The CRC error detection codes are calculated using all of the previous bytes in the command or response and are
appended to each command and response to allow detection of RF communication errors. These bytes are required by
ISO/IEC 14443-3:2001 and are usually calculated and verified in the reader hardware.
AT88SC0808/1616/3216/6416CRF, AT88RF04C
Command Second Byte >
Response Second Byte >
Command Fourth Byte >
Command Third Byte >
Command First Byte >
Command Fifth Byte >
Response First Byte >
CRC Second Byte >
CRC Second Byte >
CRC First Byte >
CRC First Byte >
Example Command and Response Format
TR2
$F
Reader
ADDR
CRC1
CRC2
$1D
$00
$51
XX
$0
DATA
CRC1
CRC2
PICC
CID
5276C–RFID–3/09