PCF7946AT/1081/CM'

High performance monolithic security transponder and remote keyless entry chip (HITAG2PLUS). Transponder circuitry meets the security and performance requirements of modern car immobiliser applications. Excellent device sensitivity (large distance) and short authentication time ensure easy application and outstanding system performance. Ideally suited for car immobiliser applications that incorporate keyless entry functions.

• Compatible with security transponder PCF7936AS
• Rolling code generator for keyless entry
• 64/32bit mutual authentication, 32bit unique device identification number, 48bit secret key
• EEPROM read/write in cipher mode, 128bit user memory (EEPROM)
• EEPROM read/write protection capability
• Excellent sensitivity in read and write mode
• Four user buttons (15 + 1 commands), LED acknowledgment of transmission
• 42bit unidirectional rolling code, automatic code synchronisation via transponder
• Programmable data rate and frame repetition rate
• Manchester encoding, battery low indication, single cell operation