Introduces features and characteristics of AVR® 8-bit microcontrollers ATmega325/ATmega3250 and ATmega645/ATmega6450.
The ATmega325, ATmega3250, ATmega645 and ATmega6450 are low‑power CMOS 8‑bit microcontrollers based on Atmel's enhanced AVR RISC architecture. They provide high‑speed single‑cycle instruction execution and a range of on‑chip peripherals suitable for embedded control applications.
Key features include up to 64 KB of In‑System Programmable Flash, up to 4 KB SRAM, multiple 8‑bit I/O ports, a 10‑bit ADC, JTAG interface, and several power‑saving modes. The devices operate from 1.8 V to 5.5 V and are rated for an industrial temperature range of –40 °C to 85 °C.
| EEPROM | 1 KB (ATmega325/ATmega3250), 2 KB (ATmega645/ATmega6450) |
|---|---|
| Operating voltage range | 1.8 V – 5.5 V |
| Temperature range | -40 °C to 85 °C (Industrial) |
| Active‑mode current (1 MHz, 1.8 V) | 350 pA |
| Power‑down current (1.8 V) | 100 nA |
The ATmega325 provides 32 KB of In‑System Programmable Flash memory.
It operates from 1.8 V up to 5.5 V.
They are rated for an industrial temperature range of –40 °C to 85 °C.