Product Summary

The PCF7931DS is a highly integrated and powerful advanced basestation IC, ABIC, ideally suited for vehicle immobilisation applications. The PCF7931DS incorporates all necessary functions to facilitate reading and writing of transponders. Communication with the PCF7931DS and the transponder is provided via the serial microcontroller interface. Employing CMOS technology, the PCF7931DS features low power operation and supports Idle and Powerdown modes.

Features

PCF7931DS features: (1)High antenna drive capabilities, CW: 200mAp; (2)Low antenna driver output resistance, 3.5 W; (3)Excellent receiver sensitivity, 2mVpp; (4)Large receiver dynamic range; (5)Programmable clock divider, modulator, receiver gain and filter characteristics; (6)Fast "read after write" receiver settling characteristics; (7)On-chip receive EMI filter; (8)Antenna failure mode detection; (9)Few external components; (10)Operating supply voltage: 4.5 to 5.5 V; (11)Power down mode: 7mA @ 5.5 V; (12)14-pin SO package.

Diagrams

PCF7931DS pin connection