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ATtiny2313 (DIP)

8-bit AVR microcontroller with 2KB of program memory.

Datasheet

Left Pins

Pin Name Function(s)
1 PA2 ~RESET/dW
2 PD0 RXD
3 PD1 TXD
4 PA1 XTAL2
5 PA0 XTAL1
6 PD2 CKOUT/XCK/INT0
7 PD3 INT1
8 PD4 T0
9 PD5 OC0B/T1
10 GND Ground.

Right Pins

Pin Name Function(s)
20 Vcc Positive supply voltage.
19 PB7 UCSK/SCL/PCINT7
18 PB6 MISO/DO/PCINT6
17 PB5 MOSI/DI/SDA/PCINT5
16 PB4 OC1B/PCINT4
15 PB3 OC1A/PCINT3
14 PB2 OC0A/PCINT2
13 PB1 AIN1/PCINT1
12 PB0 AIN0/PCINT0
11 PD6 ICP