This is a high performance, low power AVR® 8-bit microcontroller
The ATmega329P/V and ATmega3290P/V are low‑power 8‑bit AVR microcontrollers with up to 32 Kbytes of flash, 1 Kbyte EEPROM, and 2 Kbytes SRAM. They offer 54 or 69 programmable I/O lines, multiple timer/counter units, an 8‑channel 10‑bit ADC, and a full JTAG interface for debugging and programming.
The document provides a block diagram, detailed pin‑out tables, and descriptions of each port (A‑J) and special pins such as RESET, XTAL1/2, AVCC, AREF, and LCDCAP. Electrical characteristics, speed grades, and power‑saving modes (Idle, Power‑down, Power‑save, Standby) are also listed.
| EEPROM | 1 Kbyte |
|---|---|
| Programmable I/O Lines | 54/69 |
| Package Types | 64‑lead TQFP, 64‑pad QFN/MLF, 100‑lead TQFP |
| Active Mode Current | 420 pA @ 1 MHz, 1.8 V |
| Power‑down Mode Current | 40 nA @ 1.8 V |
| ADC | 8‑channel, 10‑bit |
The ATmega329P has 54 programmable I/O lines, while the ATmega3290P has 69.
In active mode the device draws 420 pA at 1 MHz with a 1.8 V supply.
They are available in 64‑lead TQFP, 64‑pad QFN/MLF, and 100‑lead TQFP packages.