LRIS64K Datasheet, PDF (24/100 Pages) STMicroelectronics – 64 Kbit EEPROM tag IC at 13.56 MHz with 64-bit UID and password based on ISO/IEC 15693 and ISO/IEC 18000-3 Mode 1

Data rate and data coding
Figure 6. Detail of a time period
9.44 µs
18.88 µs
LRIS64K
Pulse
Modulated
Carrier
.......
2
2
4
.......
2
2
2
2
5
6
Time Period
one of 256
AI06657
7.2
Data coding mode: 1 out of 4
The value of 2 bits is represented by the position of one pause. The position of the pause on
1 of 4 successive time periods of 18.88 µs (256/f_C), determines the value of the 2 bits. Four
successive pairs of bits form a byte, where the least significant pair of bits is transmitted first.
In this case the transmission of one byte takes 302.08 µs and the resulting data rate is 26.48
Kbits/s (f_C/512). Figure 7 illustrates the 1 out of 4 pulse position technique and coding.
Figure 8 shows the transmission of E1h (225d - 1110 0001b) by the VCD.
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Doc ID 15336 Rev 11