ATA555812-DDW Atmel, ATA555812-DDW Datasheet - Page 23

• Manufacturer Part Number: ATA555812-DDW
• Manufacturer: Atmel

Specifications of ATA555812-DDW

• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Operating Temperature Classification: Industrial
• Lead Free Status / RoHS Status: Not Compliant

Figure 6-2.
Figure 6-3.
4681C–RFID–09/05
T
T
T
Tag
Tag
T
GetID Command with Partially Known Tag ID
Subsequent Tag Responses in Anticollision Loop (Two Alternative Tag IDs)
Tag
IR
2 bit period
2 bit period
TagID bit
TagID bit
S
final
final
'0'
Gap
'1'
Anticollision response
SOC
00
from all tags.
T
GetID
1
SOF
T
00
0
remaining tag with '1' in last TagID
remaining tag with '1' in last TagID
even
00
Interrogator acknowledge gap
Anticollision response from
Anticollision response from
Interrogator command GetID (TagIDpart = "A23")
position (TagID = A232)
position (TagID = A233)
Final tag response for TagID "A232" + CRC
10
2 bit period 2 bit period 2 bit period
Tag response for TagID's "A232" or "A233"
SOF
SOF
'0'
Final Tag response for TagID "A233" + CRC
subsequent TagID bits
A
10
'0'
00
'0'
'0'
'1'
'1'
'1'
2
16 bit Manchester coded CRC (= "7D2C" )
10
16 bit Manchester coded CRC (= "6D0D" )
'1'
'1'
T
Tag
ATA5558 [Preliminary]
Alternative A (TagID = "A233")
Alternative B (TagID = "A232")
'0'
'1'
Anticollision response from all tags
00
with '1' in current TagID position
Interrogator acknowledge gap
(TagID = A233 and/or A232)
3
'0'
'0'
11
SOF
'1'
'1'
'1'
'1'
T
Tag
'0'
'0'
T
Tag
'1'
'0'
23