ATMEGA645A-AUR vs ATMEGA645-16AI Comparison
Detailed side-by-side comparison of ATMEGA645A-AUR 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
ATMEGA645A-AUR - 8-bit AVR MCU 64KB Flash 16MHz TQFP-64 | Microchip
ATMEGA645A-AUR β ActiveMicrochip Technology
ATMEGA645-16AI - 8-bit AVR MCU 64KB Flash 16MHz | Microchip
ATMEGA645-16AI β ActiveSpecification Comparison
| Parameter | ATMEGA645A-AUR | ATMEGA645-16AI |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $4.68 | $6.45 |
| Core Architecture | 8-bit AVR RISC | 8-bit AVR RISC |
| Max Operating Frequency | 16 MHz | β |
| Flash Memory | 64 KB (32K x 16) ISP FLASH | β |
| EEPROM | 2 KB | 2 KB |
| SRAM | 4 KB | 4 KB |
| Operating Voltage Range | 2.5 V / 3.3 V / 5 V (per datasheet family listing) | 2.7 V to 5.5 V |
| General Purpose I/O | 54 I/O lines | β |
| Working Registers | 32 x 8-bit | β |
| ADC | 10-bit, 8 channels | 8-channel, 10-bit |
| LCD Controller | Yes, segment driver (megaAVR LCD family) | β |
| Timers | Two 8-bit, one 16-bit | β |
| Serial Interfaces | 2 x USART, SPI, TWI (I2C compatible) | β |
| Debug / Programming | JTAG, ICSP (In-Circuit Serial Programming) | β |
| Package | 64-TQFP (14 x 14 mm) | 64-TQFP (14x14 mm) |
| Operating Temperature (Max) | 85 C | β |
| Mounting Type | Surface Mount | Surface Mount |
| Packaging | Tape & Reel (R suffix) | β |
| RoHS Status | Compliant | Compliant |
| Flash Program Memory | β | 64 KB (32K x 16) ISP |
| Maximum Clock Frequency | β | 16 MHz |
| Throughput | β | 16 MIPS at 16 MHz |
| Programmable I/O | β | 68 (device), 54 available on 64-TQFP |
| JTAG Interface | β | Yes (on-chip debugging and boundary scan) |
| Instruction Set | β | 130 instructions, mostly single-cycle |
| Operating Temperature | β | -40C to +85C (industrial, I grade) |
| Interfaces | β | USART, SPI, TWI (I2C) |
| ISP Capability | β | In-System Programmable Flash |