ATMEGA325-16MI vs ATMEGA645-16MU Comparison
Detailed side-by-side comparison of ATMEGA325-16MI by Microchip Technology and ATMEGA645-16MU by Microchip Technology. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Microchip Technology
ATMEGA325-16MI - AVR 8-Bit MCU 16MHz 32KB Flash | Microchip
ATMEGA325-16MI ✓ ActiveMicrochip Technology
ATMEGA645-16MU - 8-bit AVR MCU, 64KB Flash, 16MHz | Microchip
ATMEGA645-16MU ✓ ActiveSpecification Comparison
| Parameter | ATMEGA325-16MI | ATMEGA645-16MU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $3.05 | $4.65 |
| Core Architecture | 8-bit AVR RISC | 8-bit AVR RISC |
| Max Clock Frequency | 16 MHz | — |
| Program Memory (Flash) | 32 KB (16K x 16) | — |
| EEPROM | 1 KB | — |
| SRAM | 2 KB | — |
| Operating Voltage Range | 2.7 V to 5.5 V | — |
| Number of I/O | 54 programmable I/O lines | — |
| Instructions | 130 powerful instructions, most single-cycle | — |
| Timers/Counters | Two 8-bit and two 16-bit | — |
| ADC | 10-bit | — |
| Serial Interfaces | USART, SPI, TWI (I2C-compatible) | — |
| Package | 64-QFN / MLF (9x9 mm) with exposed pad | 64-QFN (9x9 mm) |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40C to +85C (industrial) | [DATA_NEEDED: operating temperature range] |
| ISP (In-System Programmable) | Yes | — |
| JTAG / Debug | JTAG boundary scan and on-chip debug | — |
| RoHS Status | Compliant (Green per FindIC data) | GREEN package (per FindIC listing) |
| Program Memory Size | — | 64 KB (32K x 16) Flash, ISP |
| SRAM Size | — | 4 KB |
| EEPROM Size | — | 2 KB |
| Maximum Clock Frequency | — | 16 MHz |
| Throughput | — | 16 MIPS at 16 MHz |
| Supply Voltage Range | — | 2.7 V to 5.5 V |
| Number of I/O Lines | — | 68 |
| ADC Resolution | — | 10-bit |
| ADC Channels | — | 8 channels |
| Debug Interface | — | JTAG (on-chip debugging and boundary scan) |
| Speed Grade Class | — | 16 (industrial, GREEN) |
| Core Supply | — | Single supply |