LRI1K datasheet(17/86 Pages) STMICROELECTRONICS

部件名	LRI1K

功能描述	1024-bit EEPROM tag IC at 13.56 MHz, with 64-bit UID and kill code, ISO 15693 and ISO 18000-3 Mode 1 compliant

PDF	86 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

标志

17 / 86 page

LRI1K

Data rate and data coding

Doc ID 17170 Rev 3

17/86

3.2

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/fC) 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 Kbit/s (fC/512). Figure 6 illustrates the 1 out of 4 pulse position technique and coding.

Figure 7 shows the transmission of E1h (225d - 1110 0001b) by the VCD.

Figure 6.

1 out of 4 coding mode

AI06658

9.44 µs

75.52 µs

28.32 µs

9.44 µs

75.52 µs

47.20µs

9.44 µs

75.52 µs

66.08 µs

9.44 µs

75.52 µs

Pulse position for "00"

Pulse position for "11"

Pulse position for "10" (0=LSB)

Pulse position for "01" (1=LSB)

LRI1K 数据表(PDF) 17 Page - STMicroelectronics