ATMEGA645A-AUR vs ATMEGA649P-AUR Comparison
Detailed side-by-side comparison of ATMEGA645A-AUR by Microchip Technology and ATMEGA649P-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-AUR - 8-bit AVR MCU 64KB Flash 16MHz TQFP-64 | Microchip
ATMEGA645A-AUR ✓ ActiveMicrochip Technology
ATMEGA649P-AUR - AVR 8-bit MCU 64KB Flash LCD | Microchip
ATMEGA649P-AUR ✓ ActiveSpecification Comparison
| Parameter | ATMEGA645A-AUR | ATMEGA649P-AUR |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $4.68 | $4.72 |
| Core Architecture | 8-bit AVR RISC | 8-bit AVR RISC |
| Max Operating Frequency | 16 MHz | — |
| Flash Memory | 64 KB (32K x 16) ISP FLASH | 64 KB ISP Flash (read-while-write) |
| 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) | — |
| General Purpose I/O | 54 I/O lines | 54/69 lines |
| Working Registers | 32 x 8-bit | 32 general purpose |
| ADC | 10-bit, 8 channels | — |
| LCD Controller | Yes, segment driver (megaAVR LCD family) | Integrated segment LCD driver |
| Timers | Two 8-bit, one 16-bit | — |
| Serial Interfaces | 2 x USART, SPI, TWI (I2C compatible) | — |
| Debug / Programming | JTAG, ICSP (In-Circuit Serial Programming) | — |
| Package | 64-TQFP (14 x 14 mm) | 64TQFP (TQFP-64) |
| Operating Temperature (Max) | 85 C | — |
| Mounting Type | Surface Mount | Surface Mount |
| Packaging | Tape & Reel (R suffix) | — |
| RoHS Status | Compliant | — |
| Maximum CPU Speed | — | 16 MHz |
| Debug Interface | — | JTAG (on-chip debug, boundary scan) |
| Low Power Technology | — | picoPower |
| Supply Voltage | — | 1.8 V to 5.5 V (picoPower family) |
| Operating Temperature | — | -40C to +85C (industrial, per A-grade suffix) |
| Packing | — | Tape & Reel (T&R) |
| RoHS / Green | — | GREEN package |
| Product Status | — | Active |