PN531 NXP Semiconductors, PN531 Datasheet - Page 14

• Manufacturer Part Number: PN531
• Description: ??c Based Transmission Module
• Manufacturer: NXP Semiconductors

Philips Semiconductors
PN531
5 TYPICAL APPLICATION
5.1 Circuit Diagram
5.1.1 CIRCUIT BASED ON SPI, SERIAL UART OR I2C HOST INTERFACE
The figure below shows a typical application, where the antenna is directly connected to the PN531. The
used host interface is SPI, Serial UART or I2C.
Note:
1. *
2. (o)
Host
Can be used in the card operating mode to connect to SAM
Optional
PADVSS
PADVDD
Host Interface
Figure 8: Circuit Diagram for SPI, Serial UART and I2C host interface
DVSS
AVSS
IRQ
VBUS
IRQ (o)
RSTOUT (o)
DVDD
RSTPD (o)
OSCIN
PN531
AVDD
27,12 MHz
OSCOUT
TVDD
TVSS2
Objective Short Form Specification Rev. 2.0 February 2004
TVSS1
Tx1
Tx2
VMID
Rx
SigOut
14
SigIn
*
µC based Transmission module
R
C
L
L
R
C
C
C
C
C
C
C
Antenna Coil
L