ATMEGA645-16AI vs ATMEGA649-16AU Comparison
Detailed side-by-side comparison of ATMEGA645-16AI by Microchip Technology and ATMEGA649-16AU 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 ✓ ActiveSpecification Comparison
| Parameter | ATMEGA645-16AI | ATMEGA649-16AU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $6.45 | $6.27 |
| Core Architecture | 8-bit AVR RISC | — |
| Flash Program Memory | 64 KB (32K x 16) ISP | — |
| SRAM | 4 KB | 4 KB |
| EEPROM | 2 KB | 2 KB |
| Maximum Clock Frequency | 16 MHz | — |
| Throughput | 16 MIPS at 16 MHz | Up to 16 MIPS at 16 MHz |
| Operating Voltage Range | 2.7 V to 5.5 V | — |
| ADC | 8-channel, 10-bit | On-chip 10-bit ADC |
| 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 | — |
| Operating Temperature | -40C to +85C (industrial, I grade) | — |
| Package | 64-TQFP (14x14 mm) | 64-TQFP (14 x 14 mm) |
| Mounting Type | Surface Mount | Surface Mount |
| Interfaces | USART, SPI, TWI (I2C) | — |
| ISP Capability | In-System Programmable Flash | — |
| RoHS Status | Compliant | Compliant (GREEN package per distributor data) |
| Core | — | 8-bit AVR RISC |
| Core Size | — | 8-bit |
| Max Clock Frequency | — | 16 MHz |
| Flash Memory | — | 64 KB (32K x 16) ISP, read-while-write |
| GPIO | — | 54/69 general purpose I/O lines (package dependent) |
| Working Registers | — | 32 general purpose |
| LCD Controller | — | Integrated segment LCD driver |
| Debug / Test Interface | — | JTAG (boundary-scan and on-chip debug) |
| Supply Voltage Range | — | [DATA_NEEDED: supply voltage range] |
| Operating Temperature Range | — | Industrial, -40C to +85C (IND TEMP per part marking) |
| Programming | — | In-System Programmable (ISP) Flash, ICSP via MPLAB SNAP |
| Newer Device Available | — | ATMEGA649A |