Description
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
NTE
test mode enable
SC-serial clock or INT3 externa
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 five different clock sources
V SS VDD
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 only) D Synchronous serial interface (2-wire, I2C, 3-w.
M44C890_Atmel.pdf