at88rf1354 ATMEL Corporation, at88rf1354 Datasheet - Page 12

• Manufacturer Part Number: at88rf1354
• Description: 13.56 Mhz Type B Rf Reader Specification
• Manufacturer: ATMEL Corporation

6.3.
6.4.
12
13.56 MHz Type B RF Reader
6.2.7.
Serial Data In pin. In SPI communication mode this pin functions as the serial data input. In TWI communication
mode this pin functions as the serial data I/O.
6.2.8.
Serial Data Out pin. In SPI communication mode this pin functions as the serial data output. In TWI communication
mode this pin is not used.
6.2.9.
SPI Slave Select Bar input pin. In SPI communication mode this pin functions as the slave select input. In TWI
communication mode this pin is not used and should be connected to V
RF Pin Descriptions
6.3.1.
Antenna driver. The 13.56 MHz carrier frequency is generated by ANT and is shaped into a sine wave by external
passive circuitry.
6.3.2.
C6 Antenna bypass capacitor pin. The C6 pin provides power to the antenna circuits and modulates the power level
for communications.
6.3.3.
RF input pin. RFin is the input to the receiver. A resistor/capacitor filter is used to limit the peak to peak voltage on
this pin to a safe level. See the AT88RF1354 reference design for appropriate component values.
Analog Pin Descriptions
6.4.1.
C1 bypass capacitor pin. Bypass capacitance of 0.33 uF for the digital circuits must be connected between the C1 pin
and V
dielectric and a working voltage of 10 volts minimum may be used.
6.4.2.
C2 bypass capacitor pin. Bypass capacitance of 47 nF for the analog circuits must be connected between the C2 pin
and V
dielectric and a working voltage of 10 volts minimum may be used.
6.4.3.
C3 bypass capacitor pin. Bypass capacitance of 47 nF for the analog circuits must be connected between the C3 pin
and V
dielectric and a working voltage of 10 volts minimum may be used.
6.4.4.
C4 bypass capacitor pin. Bypass capacitance of 0.33 uF for the analog circuits must be connected between the C4
pin and V
X7R dielectric and a working voltage of 10 volts minimum may be used.
SS
SS
SS
. This capacitor must be placed within 3 mm of the package. Any 0.33 uF ceramic capacitor with X5R or X7R
A. This capacitor must be placed within 3 mm of the package. Any 47 nF ceramic capacitor with X5R or X7R
A. This capacitor must be placed within 3 mm of the package. Any 47 nF ceramic capacitor with X5R or X7R
SS
A. This capacitor must be placed within 3 mm of the package. Any 0.33 uF ceramic capacitor with X5R or
SDI [15]
SDO [19]
SSB [13]
ANT [3]
C6 [35]
RFin [32]
C1 [21]
C2 [26]
C3 [27]
C4 [25]
SS
.
8547A−RFID−10/08