M44C890 Datasheet (Atmel) - (M44C890 / M44C090) Low Current Microcontroller

M44C890, (M44C890 / M44C090) Low Current Microcontroller

Name VDD VSS nc nc BP20 BP21 BP22 BP23 BP40 BP41 BP42 BP43 Type Function Supply voltage Circuit ground Not connected Not connected Bidirectional I/O Bidirectional I/O Bidirectional I/O Bidirectional I/O Bidirectional I/O Alternate Function * * * * * *

M44C090 M44C890 Low-Current Microcontroller for Wireless Communication The M44C090 and M44C890 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 / M44C890 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

M44C890 Features

* / Benefits 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 D Programmable system-clock with prescaler and