ATA555814C-DDB Atmel, ATA555814C-DDB Datasheet - Page 15

• Manufacturer Part Number: ATA555814C-DDB
• Description: IC IDIC 1KBIT R/W DIE
• Manufacturer: Atmel

Specifications of ATA555814C-DDB

• Function: Read/Write
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 4-1.
Figure 4-2.
4681E–RFID–11/09
Schematic Diagram of CRC Generation
Examples of Downlink CRC Generation
(a) Read Multiple Blocks
(b) Read Single Block
(c) Write
0 1 1 0
lsb .................................................. msb
Data in
Data from interrogator
(5000 0006 hex)
0 0 0 0
data (32 bits)
0 0 0 0
P (X) = X0 X1 X2 X3 X4
(locked)
lock bit
1 0 1 0
lsb
lsb .......... msb
1 1 1 1 1 0
(1F hex)
address
end
1 0
CRC Generator tag or interrogator
lsb .............. msb
lsb .............. msb
1 1 0 0
lsb ........... msb
0 1 1 0
(13 hex)
(06 hex)
0 1 1 0
address
address
address
(06 hex)
start
X5 X6 X7 X8 X9 X10 X11
0 0
0 0
1 0
0 1 1 0
1 1 1 0
lsb .................................................. msb
lsb .................................................. msb
1 1 1 1
lsb .............................................. msb
Interrogator CRC Generator
Interrogator CRC generator
Interrogator CRC generator
after 12 shift operations
after 6 shift operations
CRC_d = 60C6hex
after 40 shift operations
CRC_d = 4167hex
CRC_d = 25EF hex
0 0 1 1
0 1 1 0
0 1 1 1
0 0 0 0
1 0 0 0
1 0 1 0
X12 X13 X14 X15
0 1 1 0
0 0 1 0
0 1 0 0
msb
ATA5558
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