LRI1K datasheet(23/86 Pages) STMICROELECTRONICS

tên linh kiện	LRI1K

Giải thích chi tiết về linh kiện	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

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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

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