AT88RF04C-MY1G View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

AT88RF04C-MY1G

CryptoRF® Specification

Atmel Corporation 

AT88SC0808/1616/3216/6416CRF, AT88RF04C

6.4. Read User Zone (Large Memory) Command [$c2]

The Read User Zone (Large Memory) command reads data from the currently selected User Zone. This command

format applies to the AT88SC6416CRF device only.

Reader

PICC

Command >

PARAM = ADDR H

CID

$2

ADDR H

ADDR L

“L”

CRC1

CRC2

Echo Command >

CID

$2

NACK

STATUS

CRC1

CRC2

FAILURE RESPONSE

< Error Code

Echo Command >

CID

$2

ACK

DATA 1

DATA 2

……….

DATA “L”

DATA “L+1”

STATUS

CRC1

CRC2

SUCCESS RESPONSE

<Status Code

6.4.1. Operation

The Read User Zone (Large Memory) command operates identically to the standard Read User Zone command, but

utilizes a two byte address to support large memory sizes. The Read User Zone command reads data from the device's

currently selected User Zone.

The data byte address is internally incremented as each byte is read from memory. Reading beyond the end of the

current User Zone is prohibited. 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.

25

5276C–RFID–3/09

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