Description
M44C090 M44C890 Low-Current Microcontroller for Wireless Communication The M44C090 and M44C890 are members of Atmels family of 4-bit single-chip micro.
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/.
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
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 a sophisticated on-chip clock generation with external clo