ATTINY2313-20PU

ATtiny2313-20PU is a small 8‑bit AVR microcontroller from Atmel/Microchip, in a 20‑pin DIP (PDIP) package. It’s designed for low‑cost, low‑power embedded control.
Key specs
- Memory: 2 KB flash, 128 bytes RAM, 128 bytes EEPROM.
- Clock: up to 16 MHz; operating voltage 2.7–5.5 V (8 MHz internal RC option available).
- Peripherals: 2 timer/counters, USI (universal serial interface) for SPI/I2C, watchdog timer, sleep modes, reset/power‑on reset and brown‑out support.
- I/O: multiple general‑purpose I/O pins across two ports; some pins support PWM.
- Programming: In‑system programming via SPI (ISP); supported by standard AVR toolchains (AVR-GCC, avrdude, Atmel Studio).
Usage and notes
- Suitable for small controllers, sensors, simple motor/LED control, and serial interfaces.
- Limitations: modest memory compared with larger AVRs; no native USB; no integrated ADC (depends on family; verify your datasheet).
Package suffix -PU denotes PDIP 20‑pin; other package options exist (e.g., SOIC). Overall, a cost‑effective choice for compact, straightforward tasks.

Here are the main features of the ATtiny2313-20PU (28-pin DIP):
- Architecture: 8-bit AVR RISC microcontroller
- Clock: up to 20 MHz
- Memory: 16 KB Flash, 2 KB SRAM, 1 KB EEPROM
- I/O: ~22 general-purpose I/O lines
- Peripherals:
- Timer/Counter0: 8-bit with PWM
- Timer/Counter1: 16-bit with PWM/IC
- USI (Universal Serial Interface) for SPI/I2C (TWI)
- 10-bit ADC with multiple channels (up to ~8)
- Communications: USI-based SPI/I2C; external and pin-change interrupts
- Power: Operating voltage 2.7–5.5 V
- Power management: Sleep modes, watchdog timer, brown-out detection
- Programming/Debug: In-System Programming (ISP) via SPI; reset pin
- Package: 28-pin DIP (ATtiny2313-20PU)
Notes: Designed for cost-sensitive, small-footprint embedded tasks with basic analog and serial peripherals.

28-pin Plastic DIP (PDIP) through-hole package. The “-PU” suffix denotes Plastic DIP.

- Pin count: 20 pins (PDIP-20, indicated by the -PU suffix)
- Function: ATtiny2313 is an 8-bit AVR microcontroller (Tiny family) used for embedded control. It contains 2 KB flash, 128 B RAM, 128 B EEPROM, and integrated peripherals such as two 8-bit timer/counters (with PWM), USART, SPI, I2C (Two-Wire), ADC, and general-purpose I/O.

- Manufacturer: Atmel Corporation (the ATTINY2313-20PU is an AVR microcontroller from Atmel).
- What kind of company: A semiconductor company that designs and manufactures microcontrollers, memory, and other ICs. Since 2016, Atmel has been a subsidiary of Microchip Technology.

- General-purpose, low-cost embedded controller for small devices
- Remote controls, timers, and basic user interfaces
- Sensor interfacing and data logging (temp, humidity, light, etc.)
- PWM-driven motor/LED control; small robotics
- Consumer electronics, toys, and appliances
- Educational/prototyping and hobby projects
- Battery-powered, low-power applications with serial interfaces (USART/SPI/I2C)

Equivalent products include:
- AT90S2313 (older AVR with the same 2K flash and 20 MHz capability)
- ATtiny2313A (revision of ATtiny2313 with identical features)
Packaging variants (same device in different packages):
- DIP28: ATtiny2313-20PU
- SOIC28: ATtiny2313-20SU
- TSSOP28: ATtiny2313-20MU