IC Melds Transponder Front End And Microcontroller

Combining transponder and remote-control functions, the U9280M is mainly intended for use in automotive anti-theft/keyless-entry systems but is also suited for other automotive and industrial uses. It combines a 4-bit MCU including EEPROM with a transponder front end and is said to be the most flexible product available for implementing transponder algorithms and IR/RF protocols. The device's programmability enables creation of a customized anti-collision function, which is necessary if multiple transponders are used in the same RF field.The chip's intelligent power management capabilities support applications both with and without battery power. For battery-powered uses, battery life is extended by the chip's extremely low power consumption. It requires a 2V supply and draws less than 300 µA typical when active and less than 1 µA in power-down mode.