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