LRIS2K datasheet(30/102 Pages) STMICROELECTRONICS

Nome de Peças	LRIS2K

Descrição Electrónicos	2048-bit EEPROM tag IC at 13.56 MHz, with 64-bit UID and Password, ISO15693 and ISO18000-3 Mode 1 compliant

PDF	102 Pages

Scroll/Zoom	100%

Fabricante Electrônico	STMICROELECTRONICS [STMicroelectronics]

Página de início	http://www.st.com

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LRIS2K to VCD frames

LRIS2K

30/102

LRIS2K to VCD frames

Frames are delimited by an SOF and an EOF. They are implemented using code violation.

Unused options are reserved for future use. For the low data rate, the same subcarrier

frequency or frequencies is/are used. In this case the number of pulses is multiplied by 4.

For the Fast commands using one subcarrier, all pulse numbers and times are divided by 2.

8.1

SOF when using one subcarrier

8.2

High data rate

The SOF includes an unmodulated time of 56.64 µs, followed by 24 pulses at 423.75 kHz

(fC/32), and a logic 1 that consists of an unmodulated time of 18.88 µs followed by 8 pulses

at 423.75 kHz as shown in Figure 24.

Figure 24.

Start of frame, high data rate, one subcarrier

For the Fast commands, the SOF comprises an unmodulated time of 28.32 µs, followed by

12 pulses at 423.75 kHz (fC/32), and a logic 1 that consists of an unmodulated time of

9.44µs followed by 4 pulses at 423.75 kHz as shown in Figure 25.

Figure 25.

Start of frame, high data rate, one subcarrier x2

113.28µs

ai12078

37.76µs

56.64µs

ai12079

18.88µs

LRIS2K Folha de dados(PDF) 30 Page - STMicroelectronics