DEMOKITCRX14 STMicroelectronics, DEMOKITCRX14 Datasheet - Page 39

• Manufacturer Part Number: DEMOKITCRX14
• Description: RFID EVALUATION KIT ISO14443-B
• Manufacturer: STMicroelectronics
• Type: Development kitr

Specifications of DEMOKITCRX14

• Contents: CD-ROM, CRX14 Board, USB Transceiver, Samples and Documentation
• Processor To Be Evaluated: CRX14
• Interface Type: I2C
• Operating Supply Voltage: 5 V
• For Use With/related Products: CRX14
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 497-3704

CRX14
Figure 35. CRX14 synchronous timing
Table 13.
f
MI
t
t
t
t
t
CC
RFR
RFSBL
JIT
0
1
RF OUT ASK Modulated Signal
CARRIER
V RFOUT
FRAME transmission between the reader and the contactless device
FRAME transmitted by the PICC in BPSK
Data jitter on FRAME transmitted by the CRX14 in ASK
Symbol
, t
t DR
RFF
1
RF
0
t RFSBL
t POR
External Oscillator Frequency
Carrier Modulation Index
10% Rise and Fall time
ASK modulation bit jitter
Antenna Reversal delay
Synchronization delay
OUT
Pulse Width on RF
DATA
AC characteristics
t DR
START
1
t RFSBL
t JIT
0
A
Parameter
EOF
OUT
t RFSBL
t JIT
B
(1)
t RFF
t 0
Doc ID 8880 Rev 4
t RFSBL
t JIT
847kHz
t 1
t RFSBL
t JIT
V
MI=(A-B)/(A+B)
1 ETU = 128/f
CRX14 to PICC
Min = 64/f
Min = 80/f
t RFR
CC
SOF
= 5 V
Condition
FRAME transmitted by the CRX14 in ASK
t DA
t RFSBL
S
S
1 1 0 DATA
t JIT
CC
t DA
13.553
10
0.5
9.44
-0.5
75
94
1 0 DATA
Min.
DC and AC parameters
13.567
14
1.5
0.5
1 0
Max.
f CC
ai09258
MHz
%
µs
µs
µs
µs
µs
Unit
39/47