Hardware Description

NXP Semiconductors
AN11xxx
TWR-POSCARD Hardware description
AN11806
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Application note
COMPANY CONFIDENTIAL
Rev. 1.1 — July 2, 2019
6 of 21
1.2 Architecture
The TWR-POS-CLRC663 peripheral board embeds ICs to provide Contact and
Contactless payment functionalities.
The board uses the following ICs:
- CLRC663: NXP Contactless Front-end reader
- TDA8035: NXP Contact Front-end reader device.
Both devices are compliant with latest payment specifications (EMVCo)
The reader ICs are controlled by an MCU or processor module, through the side
connectors, plugged on Tower system.
In order to interface with smart cards, the TWR-POS-CLRC663 board is autonomous as
it embeds an antenna connected to CLRC663 to interact with Contactless cards, and a
contact smart card connector, connecting the smart card to the TDA8035.