ATMEGA645-16MI vs ATMEGA325-16MI Comparison
Detailed side-by-side comparison of ATMEGA645-16MI 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
ATMEGA645-16MI - 8-Bit AVR MCU 16MHz 64KB Flash | Microchip
ATMEGA645-16MI β ActiveMicrochip Technology
ATMEGA325-16MI - AVR 8-Bit MCU 16MHz 32KB Flash | Microchip
ATMEGA325-16MI β ActiveSpecification Comparison
| Parameter | ATMEGA645-16MI | ATMEGA325-16MI |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $3.92 | $3.05 |
| Core Architecture | 8-bit AVR RISC | 8-bit AVR RISC |
| Core Clock Speed | 16 MHz | β |
| Program Memory Size | 64 KB (32K x 16) Flash | β |
| Program Memory Type | In-System Programmable FLASH | β |
| SRAM Size | 4 KB | β |
| EEPROM Size | 2 KB | β |
| Number of I/O | 53 programmable I/O lines | 54 programmable I/O lines |
| ADC Resolution | 10-bit | β |
| ADC Channels | 8 | β |
| LCD Controller | Yes (segment LCD driver) | β |
| Debug Interface | JTAG (on-chip debug, boundary scan) | β |
| Package | 64-QFN (9x9 mm) | 64-QFN / MLF (9x9 mm) with exposed pad |
| Mounting Type | Surface Mount | Surface Mount |
| Temperature Grade | Industrial (-I suffix) | β |
| Instructions | 130 powerful instructions, most single-cycle | 130 powerful instructions, most single-cycle |
| Supply Voltage | [DATA_NEEDED: supply voltage range] | β |
| RoHS Status | [DATA_NEEDED: RoHS status] | Compliant (Green per FindIC data) |
| Max Clock Frequency | β | 16 MHz |
| Program Memory (Flash) | β | 32 KB (16K x 16) |
| EEPROM | β | 1 KB |
| SRAM | β | 2 KB |
| Operating Voltage Range | β | 2.7 V to 5.5 V |
| Timers/Counters | β | Two 8-bit and two 16-bit |
| ADC | β | 10-bit |
| Serial Interfaces | β | USART, SPI, TWI (I2C-compatible) |
| Operating Temperature | β | -40C to +85C (industrial) |
| ISP (In-System Programmable) | β | Yes |
| JTAG / Debug | β | JTAG boundary scan and on-chip debug |