The ATMEGA328PPU is a highperformance, lowpower 8bit AVR microcontroller from Microchip (formerly Atmel). It features 32KB of flash memory and is housed in a 28pin DIP package, making it the standard MCU for the Arduino Uno and a popular choice for custom, breadboardfriendly electronics projects [citation:1][citation:5][citation:7].
| Parameter | Value |
|---|---|
| :- | :- |
| Core | AVR 8-bit RISC Architecture [citation:1] |
| Max Clock Speed | 20 MHz [citation:4] |
| Program Memory (Flash) | 32 KB [citation:5] |
| EEPROM | 1 KB [citation:8] |
| SRAM | 2 KB [citation:8] |
| GPIO | 23 I/O Lines [citation:1] |
| ADC | 6 Channels, 10-bit [citation:1] |
| Interfaces | USART, SPI, I2C [citation:4] |
| Package | 28-Pin PDIP [citation:1] |
| Supply Voltage | 1.8V - 5.5V [citation:5] |
= Key Features =
+High Performance RISC Architecture - 131 instructions, most executed in a single clock cycle for efficient processing [citation:1].
+Integrated Peripherals - Three timers, PWM, watchdog timer, and an analog comparator for versatile functionality [citation:7].
+Low Power Consumption Five powersaving modes, including a power-down mode drawing as little as 0.1 µA at 3V [citation:7].
+InCircuit Programmable Supports ISP (In-System Programming) for easy firmware updates [citation:6].
√ Can be programmed using the Arduino IDE with a bootloader installed [citation:6].
√ Available in a convenient 28-pin DIP package for prototyping [citation:1].
√ Supports both 3.3V and 5V logic systems [citation:1].