ATA555812C-DDB Atmel, ATA555812C-DDB Datasheet - Page 23
![no-image](/images/manufacturer_photos/0/0/78/atmel_sml.jpg)
ATA555812C-DDB
Manufacturer Part Number
ATA555812C-DDB
Description
IC IDIC 1KBIT R/W DIE
Manufacturer
Atmel
Datasheet
1.ATA555812C-DDB.pdf
(52 pages)
Specifications of ATA555812C-DDB
Function
Read/Write
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- Current page: 23 of 52
- Download datasheet (2Mb)
Figure 6-2.
Figure 6-3.
4681E–RFID–11/09
T Tag
GetID Command with Partially Known Tag ID
Subsequent Tag Responses in Anticollision Loop (Two Alternative Tag IDs)
final TagID
bit('1')
S
Gap
Anticollision response
SOC
00
from all tags.
final TagID
Tack
SOF
bit('0')
GetID
00
Anticollision response from remaining
T0
Anticollision response from remaining
Interrogator command GetID (TagIDpart = "A23")
Tag B with '0' in last TagID position
even
Interrogator acknowledge gap
00
Tag A with '1' in last TagID bit
position (TagID = A233)
(TagA->Active)
(TagID = A232)
Final Tag response from TagID "A232"+ CRC
10
2 bit period
(TagB->Active)
SOF
Tag response for TagID's "A232" or "A233"
SOF
Final Bit
'0'
A
Final Tag response for TagID "A233"+ CRC
subsequent TagID bits
first anticollision cycle (TagA and TagB)
10
second anticollision cycle (TagB only)
2 bit period
'0'
00
'0'
'0'
2 bit period
'1'
'1'
'1'
2
10
'1'
'1'
Tack
'0'
‘1'
00
16 bit CRC (="7D2C" )
16 bit CRC (="6D0D" )
with '1' in current TagID bit position
Anticollision response from all tags
Interrogator acknowledge gap
TagA (TagID = "A233")
TagB (TagID = "A232")
(TagID = A233 and/or A232)
3
11
'0'
'0'
SOF
'1'
'1'
'1'
'1'
T
Tag
ATA5558
'0'
'0'
'1'
'0'
23
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