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CR14 Datasheet(PDF) 41 Page - STMicroelectronics

Part # CR14
Description  Low Cost ISO14443 type-B Contactless Coupler Chip with Anti-Collision and CRC Management
PDF  46 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

CR14 Datasheet(HTML) 41 Page - STMicroelectronics

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CR14
9 DC and AC parameters
41/46
Table 13.
RFOUT AC Characteristics
1.
Data specified in the table above are estimated or target values. All values can be updated during product
qualification.
Table 14.
RFIN AC Characteristics
1.
Data specified in the table above are estimated or target values. All values can be updated during product
qualification.
Symbol
Parameter
Condition
Min.
Max.
Unit
fCC
External Oscillator Frequency
VCC = 5V
13.553
13.567
MHz
MICARRIER
Carrier Modulation Index
MI=(A-B)/(A+B)
10
14
%
tRFR,tRFF
10% Rise and Fall time
0.5
1.5
µs
tRFSBL
Pulse Width on RFOUT
1 ETU = 128/fCC
9.44
µs
tJIT
ASK modulation bit jitter
CR14 to PICC
-0.5
0.5
µs
t0
Antenna Reversal delay
Min = 64/fS
75
µs
t1
Synchronization delay
Min = 80/fS
94
µs
tWDG
Answer delay watchdog (b5=0, b6=0)
Request EOF
rising edge to
first Answer
start bit
500
µs
tWDG
Answer delay watchdog (b5=0, b6=1)
5ms
tWDG
Answer delay watchdog (b5=1, b6=0)
10
ms
tWDG
Answer delay watchdog (b5=1, b6=1)
309
ms
tDR
Time Between Request characters
CR14
to PICC
9.44
µs
PA
RFOUT output power
90
mW
tPOR
CR14
Power-On delay
20
ms
Symbol
Parameter
Condition
Min.
Max.
Unit
tRFSBL
PICC Pulse Width
1 ETU = 128/fCC
9.44
µs
fS
PICC Sub-carrier Frequency
fCC/16
847.5
KHz
tDA
Time Between Answer characters
PICC to CR14
1, 2, 3
ETU
VDYN
RFIN Dynamic Voltage Level
VDYN Max for VOFFSET =
VCC/2
0.5
VCC/2
V
VOFFSET
RFIN Offset Voltage Level
23
V
VRET
RFIN Retro-modulation Level
120
mV



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