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SRIX4K Datasheet(PDF) 40 Page - STMicroelectronics

Part # SRIX4K
Description  13.56 MHz short-range contactless memory chip with 4096-bit EEPROM, anticollision and anti-clone functions
PDF  50 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

SRIX4K Datasheet(HTML) 40 Page - STMicroelectronics

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DC and ac parameters
SRIX4K
40/50
11
DC and ac parameters
1.
All timing measurements were performed on a reference antenna with the following characteristics:
External size: 75 mm x 48 mm
Number of turns: 3
Width of conductor: 1 mm
Space between 2 conductors: 0.4 mm
Value of the coil: 1.4 µH
Tuning Frequency: 14.4 MHz.
Table 7.
Operating conditions
Symbol
Parameter
Min.
Max.
Unit
TA
Ambient operating temperature
–20
85
°C
Table 8.
DC characteristics
Symbol
Parameter
Condition
Min
Typ
Max
Unit
VCC
Regulated voltage
2.5
3.5
V
ICC
Supply current (Active in Read)
VCC = 3.0 V
100
µA
ICC
Supply current (Active in Write)
VCC = 3.0 V
250
µA
VRET
Retromodulation induced voltage
ISO 10373-6
20
mV
CTUN
Internal tuning capacitor
13.56 MHz
64
pF
Table 9.
AC characteristics
Symbol
Parameter
Condition
Min
Max
Unit
fCC
External RF signal frequency
13.553
13.567
MHz
MICARRIER Carrier modulation index
MI=(A-B)/(A+B)
8
14
%
tRFR,tRFF 10% Rise and Fall times
0.8
2.5
µs
tRFSBL
Minimum pulse width for start bit
ETU = 128/fCC
9.44
µs
tJIT
ASK modulation data jitter
Coupler to SRIX4K
–2
+2
µs
tMIN CD
Minimum time from carrier
generation to first data
5ms
fS
Subcarrier frequency
fCC/16
847.5
kHz
t0
Antenna reversal delay
128/fS
151
µs
t1
Synchronization delay
128/fS
151
µs
t2
Answer to new request delay
14 ETU
132
µs
tDR
Time between request characters
Coupler to SRIX4K
0
57
µs
tDA
Time between answer characters
SRIX4K to Coupler
0
µs
tW
Programming time for WRITE
With no Auto-Erase
Cycle (OTP)
3ms
With Auto-Erase Cycle
(EEPROM)
5ms
Binary Counter
Decrement
7ms



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