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ST16

CHIP SET INTERFACE SPECIFICATION

STMicroelectronics 

FSD_CHIPSET_B/0104VP2

ST16-19RFRDCS

2 ANALOG FRONT END SPECIFICATION

2.1 DESCRIPTION

The Analog Front End is a combined RF generator and signal interface. It manages the communication

between a reader so called proximity coupling device (PCDs) and a proximity contactless smartcard

(PICCs). The AFE is connected to the FPGA component and the MCU used in the STMicroelectronics

Contactless System (reader chip set).

The Analog Front End is full ISO 14443 type B compliant.

The Analog Front End operates at 13.56 MHz. As the contactless smart card carries no battery, the card

is telepowered by a magnetic field, produced by the AFE, through the antenna. It also includes data mod-

ulation and demodulation circuits.

The AFE is a Dil 32 with only 12 pins package. In this version, only eight pins are used, the not connected

pin will be used for the extension type A (Figure 6).

The device requires an external inductor, an external capacitance and resistance in order to resonate at

13.56 MHz.

FC=

11/15

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