User's Manual

6
1.2 Operational Description
The Parafait RF Tap Readers are RFID readers operating at 13.56 MHz using Mifare protocols for communicating
with passive tags. When the reader is ON and a tag is nearby of the reader it will be energized by the 13.56 MHz
field.
The Parafait RF Tag Readers circuitry consists of a 13.56 MHz NFC reader fronted IC, inductive coupling external
antenna coil, and a microcontroller. The IC internal transmitter is able to drive an antenna designed to
communicate with ISO/ESC 14443A/MIFARE cards, tags, and transponders. The Digital module manages the
complete ISO/IEC 14443A framing and error detection functionality (parity and CRC).
2. Features
• RF Operating Frequency: 13.56 MHz
• Modulation: ASK
• Antenna Type: Build-in coil antenna
• Tags Supported: Mifare classic cards, Ultralight C Cards variants, and Parafait Radian Wristbands
• Interfaces: UART
• Input Voltage: 5 VDC
• Maximum current consumption: 350 mAh
• Operating distance: Up to 50 mm, depending on the tag.
• Dimension: 65 mm × 54.5 mm
3. Pinning information
Jack in the
Mifare
Jack in the
Ultralight
Pin
Symbol
Type
Description
J1 – B2C
H3 – B2C
1
GND - <
Power
3
GND
J1 – B2C
H3 – B2C
2
GND
Power
3
GND
J1 – B2C
H3 – B2C
3
5V0
Power
3
Power supply 5 VDC
J1 – B2C
H3 – B2C
4
RXD
Input
3
UART RX
J1 – B2C
H3 – B2C
5
3V3
Power
23
Power Supply for internal testing 3.3 VDC
J1 – B2C
H3 – B2C
6
TXD
Output
3
UART TX
J1 – B2C
NA
4
7
GND
Power
3
GND
J1 – B2C
NA
4
8
GND
Power
3
GND
J2 – B2B
H2 – B2B
1
GND - <
Power
3
GND
J2 – B2B
H2 – B2B
2
GND
Power
3
GND
J2 – B2B
H2 – B2B
3
RXD
Input
3
UART RX
J2 – B2B
H2 – B2B
4
5V0
Power
3
Power supply 5VDC
J2 – B2B
H2 – B2B
5
TXD
Output
3
UART TX
J2 – B2B
H2 – B2B
6
3V3
Power
23
Power Supply for internal testing 3.3 VDC
H1
H1
1
BOOT
Input
1
Boot Select
H1
H1
2
RST
Input
1
JTAG nRST
H1
H1
3
TXD
Output
1
UART TX
H1
H1
4
GND
Power
1
GND
H1
H1
5
5V
Power
1
Power supply 5VDC
H1
H1
6
RXD
Input
1
UART RX
H1
H1
7
3V3
Power
12
Power Supply for internal testing 3.3 VDC