LRI1K datasheet(23/86 Pages) STMICROELECTRONICS

No de pièce	LRI1K

Description	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%

Fabricant	STMICROELECTRONICS [STMicroelectronics]

Site Internet	http://www.st.com

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23 / 86 page

LRI1K

Bit representation and coding

Doc ID 17170 Rev 3

23/86

5.2

Bit coding using two subcarriers

5.2.1

High data rate

A logic 0 starts with 8 pulses at 423.75 kHz (fC/32) followed by 9 pulses at 484.28 kHz

(fC/28) as shown in Figure 19. For the Fast commands, the x2 mode is not available.

Figure 19.

Logic 0, high data rate

A logic 1 starts with 9 pulses at 484.28 kHz (fC/28) followed by 8 pulses at 423.75 kHz

(fC/32) as shown in Figure 20. For the Fast commands, the x2 mode is not available.

Figure 20.

Logic 1, high data rate

5.2.2

Low data rate

A logic 0 starts with 32 pulses at 423.75 kHz (fC/32) followed by 36 pulses at 484.28 kHz

(fC/28) as shown in Figure 21. For the Fast commands, the x2 mode is not available.

Figure 21.

Logic 0, low data rate

A logic 1 starts with 36 pulses at 484.28kHz (fC/28) followed by 32 pulses at 423.75kHz

(fC/32) as shown in Figure 22. For the fast commands, the x2 mode is not available.

Figure 22.

Logic 1, low data rate

37.46µs

ai12074

37.46µs

ai12073

149.84µs

ai12072

149.84µs

ai12075

LRI1K Fiches technique(PDF) 23 Page - STMicroelectronics