AT88RF04C-MVB1G Atmel, AT88RF04C-MVB1G Datasheet - Page 36
AT88RF04C-MVB1G
Manufacturer Part Number
AT88RF04C-MVB1G
Description
CRYPTOMEMORY 1-4KBIT 4ZONE MVB
Manufacturer
Atmel
Series
CryptoMemory®, CryptoRF®r
Datasheets
1.AT97SC3204-X1DB150.pdf
(8 pages)
2.AT88RF04C-MR1G.pdf
(11 pages)
3.AT88RF04C-MVB1G.pdf
(158 pages)
4.AT88RF04C-MVB1G.pdf
(2 pages)
Specifications of AT88RF04C-MVB1G
Rf Type
Read / Write
Frequency
13.56MHz
Features
ISO1444-2, 1444-3, 4-kbits
Package / Case
MVB Module
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- AT97SC3204-X1DB150 PDF datasheet
- AT88RF04C-MR1G PDF datasheet #2
- AT88RF04C-MVB1G PDF datasheet #3
- AT88RF04C-MVB1G PDF datasheet #4
- Current page: 36 of 158
- Download datasheet (892Kb)
6.8.
6.8.1. Operation
36
Write User Zone Command with Integrated MAC [$c3] [88RF]
The Write User Zone command with Integrated MAC writes data into the currently selected User Zone of 88RF PICCs.
This command can only be used when the Authentication or Encryption Communication Security mode is active.
The Write User Zone command with Integrated MAC writes data in the 88RF 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.
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 the Authentication or Encryption
Communication Security mode is not active, then a NACK response is returned. If the checksum does not match, then
a NACK response is returned, the write operation is aborted, and the cryptographic engine is reset.
The Write User Zone command with Integrated MAC includes an automatic data verification function. After the
EEPROM write is complete the data verification logic reads the new EEPROM contents and compares it to the data
received in the Write User Zone command. If the data does not match the PICC returns a NACK response with $ED in
the status byte. If the data matches, the PICC returns an ACK response.
If the Encryption Communication Security mode is active, then the DATA bytes are encrypted. In Authentication
Communication Security mode the DATA bytes are not encrypted.
AT88SC0808/1616/3216/6416CRF, AT88RF04C
Write operations cannot cross page boundaries; a Write User Zone command can only write data bytes within a single
Echo Command >
PARAM = $80 >
Command >
Checksum >
CID
DATA “L+1”
DATA “L”
PARAM
DATA 1
DATA 2
Reader
……….
ADDR
MAC1
MAC2
CRC1
CRC2
“L”
$3
CID
ACK/NACK
STATUS
CRC1
CRC2
PICC
$3
5276C–RFID–3/09
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