This document introduces the features of ATmega328P, including high performance, low power consumption, high endurance non-volatile memory segments, JTAG interface, peripheral features, etc.
This handbook describes the ATmega164P/V, ATmega324P/V, and ATmega644P/V 8‑bit AVR microcontrollers. It lists key features such as high‑performance RISC architecture, up to 20 MIPS throughput, on‑chip 2‑cycle multiplier, and extensive peripheral set including timers, PWM channels, ADC, USART, SPI, and JTAG.
The document includes pin‑out diagrams for PDIP, TQFP, and QFN/MLF packages, detailed port descriptions (Ports A‑D), operating voltage ranges, speed grades, power‑consumption figures, and data‑retention specifications. It also points to development resources and code examples available from Atmel’s website.
| Flash memory | 16 KB / 32 KB / 64 KB |
|---|---|
| EEPROM | 512 B / 1 KB / 2 KB |
| Internal SRAM | 1 KB / 2 KB / 4 KB |
| Operating voltage (PV versions) | 1.8 V – 5.5 V |
| Operating voltage (P versions) | 2.7 V – 5.5 V |
| Active mode current consumption (1 MHz, 1.8 V) | 0.4 mA |
| Power‑down mode current consumption | 0.1 pA |
The ATmega164P provides 16 KB of In‑System Self‑programmable Flash memory.
The ATmega324P/V operates from 1.8 V to 5.5 V for the PV version and from 2.7 V to 5.5 V for the P version.
It draws approximately 0.4 mA in active mode under those conditions.
Data retention is specified as 20 years at 85 °C and 100 years at 25 °C.