ATMEGA325-16AU vs ATMEGA645-16AI Comparison
Detailed side-by-side comparison of ATMEGA325-16AU by Microchip Technology and ATMEGA645-16AI 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
ATMEGA325-16AU - 32KB Flash 16MHz AVR 8-Bit MCU | Microchip
ATMEGA325-16AU β ActiveMicrochip Technology
ATMEGA645-16AI - 8-bit AVR MCU 64KB Flash 16MHz | Microchip
ATMEGA645-16AI β ActiveSpecification Comparison
| Parameter | ATMEGA325-16AU | ATMEGA645-16AI |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $2.40 | $6.45 |
| Core Architecture | 8-bit AVR RISC | 8-bit AVR RISC |
| Program Memory Size | 32KB (16K x 16) FLASH | β |
| EEPROM Size | 1KB | β |
| SRAM Size | 2KB | β |
| Maximum Clock Frequency | 16 MHz | 16 MHz |
| Supply Voltage Range | 4.5 V to 5.5 V | β |
| Number of I/O Pins | 54 | β |
| Package | 64-TQFP (14 x 14 mm, 0.8 mm pitch) | 64-TQFP (14x14 mm) |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40C to +85C | -40C to +85C (industrial, I grade) |
| Instruction Set | 131 instructions, mostly single-cycle | 130 instructions, mostly single-cycle |
| Peripherals | 10-bit ADC, UART, SPI, Watchdog Timer, Timers | β |
| In-System Programming | Yes (ISP FLASH) | β |
| Life Cycle Stage | ACTIVE | β |
| RoHS Status | [DATA_NEEDED: RoHS compliance status] | Compliant |
| MSL Rating | [DATA_NEEDED: moisture sensitivity level] | β |
| Flash Program Memory | β | 64 KB (32K x 16) ISP |
| SRAM | β | 4 KB |
| EEPROM | β | 2 KB |
| Throughput | β | 16 MIPS at 16 MHz |
| Operating Voltage Range | β | 2.7 V to 5.5 V |
| ADC | β | 8-channel, 10-bit |
| Programmable I/O | β | 68 (device), 54 available on 64-TQFP |
| JTAG Interface | β | Yes (on-chip debugging and boundary scan) |
| Interfaces | β | USART, SPI, TWI (I2C) |
| ISP Capability | β | In-System Programmable Flash |