Part Number	ATTINY44A Datasheet
Manufacturer	Atmel
Overview	1.1.1 VCC Supply voltage. 1.1.2 GND Ground. 1.1.3 Port B (PB3:PB0) Port B is a 4-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port B output buffers h. * High Performance, Low Power AVR® 8-bit Microcontroller * Advanced RISC Architecture * 120 Powerful Instructions * Most Single Clock Cycle Execution * 32 x 8 General Purpose Working Registers * Fully Static Operation * High Endurance, Non-volatile Memory Segments * 2K/4K/8K Bytes of In-System, Self.