ATMEGA645-16MU vs ATMEGA325-16MI Comparison
Detailed side-by-side comparison of ATMEGA645-16MU by Microchip Technology and ATMEGA325-16MI 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
ATMEGA645-16MU - 8-bit AVR MCU, 64KB Flash, 16MHz | Microchip
ATMEGA645-16MU ✓ ActiveMicrochip Technology
ATMEGA325-16MI - AVR 8-Bit MCU 16MHz 32KB Flash | Microchip
ATMEGA325-16MI ✓ ActiveSpecification Comparison
| Parameter | ATMEGA645-16MU | ATMEGA325-16MI |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $4.65 | $3.05 |
| Core Architecture | 8-bit AVR RISC | 8-bit AVR RISC |
| 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) | — |
| Package | 64-QFN (9x9 mm) | 64-QFN / MLF (9x9 mm) with exposed pad |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | [DATA_NEEDED: operating temperature range] | -40C to +85C (industrial) |
| Speed Grade Class | 16 (industrial, GREEN) | — |
| RoHS Status | GREEN package (per FindIC listing) | Compliant (Green per FindIC data) |
| Core Supply | Single supply | — |
| 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) |
| ISP (In-System Programmable) | — | Yes |
| JTAG / Debug | — | JTAG boundary scan and on-chip debug |