ATAR092 Datasheet | Atmel

Features - - - - 4-Kbyte ROM, 256 × 4-bit RAM 16 Bidirectional I/Os Up to 7 External/Internal Interrupt Sources Multifunction Timer/Counter with - IR Remote Control Carrier Generator - Bi-phase-, Manchester- and Pulse-width Modulator and Demodulator - Phase Control Function 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 (ATAR892 only) Synchronous Serial Interface (2-wire, 3-wire) Watchdog, POR and Brown-out Function Voltage Monitoring Inclusive Lo_BAT Detect Flash Controller ATAM893 Available (SSO20) - - - - - - - - Description The ATAR092 and ATAR892 are members of Atmel’s family of 4-bit single-chip microcontrollers. They offer highest integration for IR and RF data munication, remotecontrol and phase-control applications. The ATAR092 and ATAR892 are suitable for the transmitter side as well as the receiver side. They contain ROM, RAM, parallel I/O ports, 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-k Hz crystal- and 4-MHz crystal-oscillators. The ATAR892 has an additional EEPROM as a second chip in one package. Figure 1. Block Diagram VSS VDD OSC1 OSC2 Low-current Microcontroller for Wireless munication ATAR092 ATAR892 Brown-out protect. RESET Voltage monitor External input VMI BP10 Port 1 BP13 BP20/NTE Port 2 RC Crystal oscillators oscillators External clock input UTCM Timer 1 interval- and watchdog timer Timer 2 T2I T2O SD Clock management 4 K x 8 bit 256 x 4 bit 8/12-bit timer with modulator SSI MARC4 Data direction Serial interface Timer 3 8-bit timer/counter with modulator and demodulator SC T3O T3I BP21 BP22 BP23 4-bit CPU core I/O bus Data direction + alternate function Port 4 Data direction + interrupt control Port...