ATMEGA645A-AU vs ATMEGA645A-AUR Comparison
Detailed side-by-side comparison of ATMEGA645A-AU 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
ATMEGA645A-AU - 8-bit AVR MCU 64KB Flash 16MHz TQFP-64 | Microchip
ATMEGA645A-AU ✓ ActiveMicrochip Technology
ATMEGA645A-AUR - 8-bit AVR MCU 64KB Flash 16MHz TQFP-64 | Microchip
ATMEGA645A-AUR ✓ ActiveSpecification Comparison
| Parameter | ATMEGA645A-AU | ATMEGA645A-AUR |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $3.95 | $4.68 |
| Core Architecture | 8-bit AVR RISC | 8-bit AVR RISC |
| Max CPU Frequency | 16 MHz | — |
| Flash Memory | 64 KB (32K x 16) In-System Programmable | 64 KB (32K x 16) ISP FLASH |
| EEPROM | 2 KB | 2 KB |
| SRAM | 4 KB | 4 KB |
| General Purpose I/O | 54 GPIO | 54 I/O lines |
| Package | 64-TQFP (14x14 mm) | 64-TQFP (14 x 14 mm) |
| Mounting Type | Surface Mount | Surface Mount |
| Supply Voltage | 4.5 V to 5.5 V (16 MHz operation) | — |
| Operating Temperature | [DATA_NEEDED: operating temperature range] | — |
| ADC | 10-bit, up to 8 channels | 10-bit, 8 channels |
| LCD Controller | Yes, up to 4 COM x 25 SEG | Yes, segment driver (megaAVR LCD family) |
| Communication Interfaces | USART, SPI, TWI (I2C) | — |
| Timers | 2 x 8-bit, 1 x 16-bit (plus watchdog) | Two 8-bit, one 16-bit |
| Number of Pins | 64 | — |
| RoHS Status | Compliant | Compliant |
| MSL Level | [DATA_NEEDED: moisture sensitivity level] | — |
| Max Operating Frequency | — | 16 MHz |
| Operating Voltage Range | — | 2.5 V / 3.3 V / 5 V (per datasheet family listing) |
| Working Registers | — | 32 x 8-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) |