ATAR090

Features 2-Kbyte ROM, 256 × 4-bit RAM 12 Bi-directional I/Os Up to 6 External/Internal Interrupt Sources Multifunction Timer/Counter with – IR Remote Control Carrier Generator – Bi-phase-, Manchester- and Pulse-width Modulator and Demodulator Programmable System Clock with Prescaler and Five Different Clock Sources Wide Supply-voltage Range (1.8 V to 6.5 V) Very Low Sleep Current (< 1 µA) 32 × 16-bit EEPROM (ATAR890 only) Synchronous Serial Interface (2-wire, 3-wire) Watchdog, POR and Brown-out Function Voltage Monitoring Inclusive Lo_BAT Detection Flash Controller ATAM893 Available (SSO20) Description The ATAR090 and ATAR890 are members of Atmel’s family of 4-bit single-chip microcontrollers. They offer the highest integration for IR and RF data communication and remote-control. The ATAR090 and ATAR890 are suitable for the transmitter side. They contain ROM, RAM, parallel I/O por ts, two 8-bit programmable multifunction timer/counters with modulator and demodulator function, voltage supervisor, interval timer with watchdog function and a sophisticated on-chip clock generation with external clock input, integrated RC-, 32-kHz crystal- and 4-MHz crystal-oscillators. The ATAR890 has an additional EEPROM as a second chip in one package. Figure 1. Block Diagram VSS VDD OSC1 OSC2 www.DataSheet4U.com Low-current Microcontroller for Wireless Communication ATAR090 ATAR890 Brown-out protect RESET Voltage monitor External input VMI Crystal External RC oscill...