LRI64-SBN18/1GE STMicroelectronics, LRI64-SBN18/1GE Datasheet - Page 11

• Manufacturer Part Number: LRI64-SBN18/1GE
• Description: IC EEPROM MEMORY TAG WAFER
• Manufacturer: STMicroelectronics
• Series: LRI64r

Specifications of LRI64-SBN18/1GE

• Rf Type: Write Once Read Many (WORM)
• Frequency: 13.56MHz
• Features: ISO15693, ISO18000-3
• Package / Case: Wafer
• For Use With: 497-5538 - DEMO KIT LONG-RANGE
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

LRI64
5
Communication signal from VCD to LRI64
Communications between the VCD and the LRI64 involves a type of amplitude modulation
called amplitude shift keying (ASK).
The LRI64 only supports the 10% modulation mode specified in ISO 15693 and ISO 18000-
3 Mode 1 standards. Any request that the VCD might send using the 100% modulation
mode, is ignored, and the LRI64 remains in its current state. However, the LRI64 is, in fact,
operational for any degree of modulation index from between 10% and 30%.
The modulation index is defined as (a-b)/(a+b) where a and b are the peak and minimum
signal amplitude, respectively, of the carrier frequency, as shown in
Table 2.
Figure 4.
Figure 5.
Parameter
75.52 µs
a
10% modulation parameters
10% modulation waveform
“1-out-of-4” coding example
10
hr
hf
tRFF
tRFSFL
b
tRFR
75.52 µs
00
Min
–
–
Communication signal from VCD to LRI64
75.52 µs
hr
01
Figure
0.1 x (a-b)
0.1 x (a-b)
hf
Max
4.
75.52 µs
11
AI06655B
AI06659B
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t