PCF7947AT/1081/CM:

High performance monolithic security transponder and remote keyless entry chip with extended EEPROM capacity (HITAG2PLUS-EE). 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 and extended user/application data management.

• Compatible with security transponder PCF7936AS
• Compatible with Security Transponder and Keyless Entry Chip PCF7946AT
• 64/32bit mutual authentication, 32bit unique device identification number, 48bit secret key
• EEPROM read/write in cipher mode and plain mode
• 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