M44C090-H

M44C090-H M44C890-H Low-Current Microcontroller for Wireless Communication The M44C090-H and M44C890-H are members of Atmels family of 4-bit single-chip microcontrollers. They offer highest integration for IR and RF data communication and remote-control applications. The M44C090-H / M44C890-H is suitable for the transmitter side. It contains ROM, RAM, parallel I/O ports, one 8-bit programmable multifunction timer/counter with modulator 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 crystaloscillators. The M44C890-H has an additional EEPROM as a second chip in one package. Features / Benefits D Extended temperature range for high temperature up to 105_C D 2-Kbyte ROM, 256 x 4-bit RAM D 12 bidirectional I/Os D Up to 6 external / internal interrupt sources D Multifunction timer/counter with – IR remote control carrier generator – Biphase-, Manchester- and pulse-width modulator V SS VDD D Programmable system-clock with prescaler and five different clock sources D Wide supply voltage range (1.8 to 6.5 V) D Very low sleep current (< 1 µA) D 32 x 16-bit EEPROM (M44C890-H only) D Synchronous serial interface (2-wire, I2C, 3-wire) D Watchdog, POR and brown-out function D Voltage monitoring incl. Lo_BAT detect D Flash controller T48C893 available (SSO20) OSC1 OSC2 Brown-out protect. RESET Voltage monitor External input VMI External Crystal RC oscil...