User's Manual

PnP USB User Guide
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2- Hardware Description
2.1 Hardware
The PnP USB module uses the Inside Contactless (France) PicoRead chip set consisting of the
PicoRead RF processing chip and a custom programmed MicroChip Corporation (USA)
18F2550 micro controller unit (MCU). The USB interface uses a FTDI Chip (England)
FT232BM chip to translate from the serial data stream of the PicoRead MCU to the host device
USB interface.
The host unit provides 5.0 volt power to the module.
The two Inside Contactless chips share a common 13.560 MHz crystal, using the MCU as the
common oscillator and drive source. The FT-232 USB interface chip uses a 6.00 MHz crystal for
its internal oscillator.