ATMEGA645-16AUR vs ATMEGA645A-AUR Comparison
Detailed side-by-side comparison of ATMEGA645-16AUR by Microchip Technology and ATMEGA645A-AUR 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
ATMEGA645-16AUR - 8-Bit AVR MCU 64KB 16MHz 64-TQFP | Microchip
ATMEGA645-16AUR ✓ ActiveMicrochip Technology
ATMEGA645A-AUR - 8-bit AVR MCU 64KB Flash 16MHz TQFP-64 | Microchip
ATMEGA645A-AUR ✓ ActiveSpecification Comparison
| Parameter | ATMEGA645-16AUR | ATMEGA645A-AUR |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $5.40 | $4.68 |
| Core | AVR 8-bit RISC | — |
| Core Size | 8-bit | — |
| Max Clock Frequency | 16 MHz | — |
| MIPS Throughput | 16 MIPS at 16 MHz | — |
| Program Memory (Flash) | 64 KB (32K x 16) | — |
| SRAM | 4 KB | 4 KB |
| EEPROM | 2 KB | 2 KB |
| Supply Voltage Range | 4.5 V to 5.5 V | — |
| ADC Channels | 8-channel 10-bit | — |
| Programmable I/O Lines | 53 (TQFP-64 package) | — |
| Debug Interface | JTAG (on-chip debugging and boundary scan) | — |
| Instruction Count | 130 instructions, most single-cycle | — |
| Package | 64-TQFP (14 x 14 mm) | 64-TQFP (14 x 14 mm) |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40C to +85C (A grade) | — |
| RoHS Status | Compliant (R suffix) | Compliant |
| Lifecycle Stage | Active | — |
| Core Architecture | — | 8-bit AVR RISC |
| Max Operating Frequency | — | 16 MHz |
| Flash Memory | — | 64 KB (32K x 16) ISP FLASH |
| Operating Voltage Range | — | 2.5 V / 3.3 V / 5 V (per datasheet family listing) |
| General Purpose I/O | — | 54 I/O lines |
| Working Registers | — | 32 x 8-bit |
| ADC | — | 10-bit, 8 channels |
| LCD Controller | — | Yes, segment driver (megaAVR LCD family) |
| Timers | — | Two 8-bit, one 16-bit |
| Serial Interfaces | — | 2 x USART, SPI, TWI (I2C compatible) |
| Debug / Programming | — | JTAG, ICSP (In-Circuit Serial Programming) |
| Operating Temperature (Max) | — | 85 C |
| Packaging | — | Tape & Reel (R suffix) |