Philips PCF7941
The PCF7941 is a single chip high performance Security Transponder and Keyless Entry controller, ideally suited for vehicle immobilizer applications that incorporate keyless entry functions. The transponder circuitry is compatible with the Security Transponder PCF7936AS, for use in mixed systems that employ a STARC and a standard Security Transponder, PCF7936AS, at the same time. The Transponder circuitry meets the security and performance requirements of modern car immobilizer applications.| Part No. | PCF7941 |
|---|---|
| Datasheet | PCF7941 Download |
| Manufacturer |  Philips |
| Description | Security Transponder and RISC Controller |
| Buy | Stock & Price |
FEATURES
● Compatible with Security Transponder, PCF7936AS.● RISC Programmable Keyless Entry features
● 384 Bit EEPROM
● 16-Pin SO package Transponder
● 64/32 bit mutual authentication calculation unit
● 32 bit unique device identification number
● 48 t bit Secre Key
● Fast mutual authentication (39 ms)
● EEPROM read/write protection capability
● Excellent 5 sensitivity in read and write mode (3 µT) RISC Controller
● Advanced 8-bit RISC architecture
● 4 Kbyte ROM, 64 Byte RAM
● On-chip < RC oscillator ( ±10%)
● Short instruction execution time (as fast as 1µs)
● 11 I/O ports, general purpose
● Code hopping based on transponder calculation unit
● Code hopping synchronization via transponder
● Clock input to serve as external data rate reference
● Programmable battery low detection
● Low power consumption (300 µA, PD 300 nA)
● Single battery cell operation (2.1V to 5.5V)
● Device supply can be derived from LF Field Typical Application