LRIS2K-A1S/1GE STMicroelectronics, LRIS2K-A1S/1GE Datasheet - Page 20

• Manufacturer Part Number: LRIS2K-A1S/1GE
• Description: IC MEMORY TAG 64BIT UID ADH ANT
• Manufacturer: STMicroelectronics
• Series: LRIS2Kr

Specifications of LRIS2K-A1S/1GE

• Rf Type: Read / Write
• Frequency: 13.56MHz
• Features: ISO15693, ISO18000-3, 2048-bits
• Package / Case: 76mm x 45mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-5534-2

Data rate and data coding
5
5.1
Figure 4.
20/98
Pulse
Modulated
Carrier
Data rate and data coding
The data coding implemented in the LRIS2K uses pulse position modulation. Both data
coding modes that are described in the ISO15693 are supported by the LRIS2K. The
selection is made by the VCD and indicated to the LRIS2K within the start of frame (SOF).
Data coding mode: 1 out of 256
The value of one single byte is represented by the position of one pause. The position of the
pause on 1 of 256 successive time periods of 18.88 µs (256/f
byte. In this case the transmission of one byte takes 4.833 ms and the resulting data rate is
1.65 kbits/s (f
Figure 4
decimal) is sent by the VCD to the LRIS2K.
The pause occurs during the second half of the position of the time period that determines
the value, as shown in
A pause during the first period transmits the data value 00h. A pause during the last period
transmit the data value FFh (255 decimal).
1 out of 256 coding mode
0 1
illustrates this pulse position modulation technique. In this figure, data E1h (225
2
C
3
/8192).
. . . . . . . . .
. . . . . . . . .
. . . . . . . .
Figure
5.
Doc ID 13888 Rev 8
2
2
5
. . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . .
4.833 ms
18.88 µs
9.44 µs
C
), determines the value of the
2
5
2
2
5
3
AI06656
2
5
4
LRIS2K
2
5
5