T555711-DDW Atmel, T555711-DDW Datasheet - Page 17
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T555711-DDW
Manufacturer Part Number
T555711-DDW
Description
IC IDIC R/W RFID 330BIT ON-CHIP
Manufacturer
Atmel
Series
T555711r
Datasheet
1.T555711-TAS.pdf
(34 pages)
Specifications of T555711-DDW
Rf Type
Read / Write
Frequency
125kHz
Features
330-bit EEPROM
Package / Case
DICE
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
6.5
4517J–RFID–03/06
Fast Write
In the optional fast write mode the time between two gaps is nominally 12 field clocks for a “0”
and 27 field clocks for a “1”. When there is no gap for more than 32 field clocks after a previous
gap, the T5557 will exit the write mode. Please refer to
Table 6-2.
Parameters
Start gap
Write gap
Write data in normal
mode
Write data in fast
mode
Fast Write Data Decoding Schemes
Normal write mode
Fast write mode
Remark
“0” data
“1” data
“0” data
“1” data
–
Table 6-2
Symbol
Wn
Wf
S
d
d
d
d
gap
gap
0
1
0
1
gap
and
Figure 4-3 on page
Min.
10
16
48
24
8
8
8
Max.
50
30
20
31
63
15
31
T5557
Unit
8.
FC
FC
FC
FC
FC
FC
FC
17