ATMEGA649A-AUR vs ATMEGA645P-AU Comparison
Detailed side-by-side comparison of ATMEGA649A-AUR by Microchip Technology and ATMEGA645P-AU 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
ATMEGA649A-AUR - 8-Bit AVR MCU, 64KB Flash, TQFP-64 | Microchip
ATMEGA649A-AUR ✓ ActiveMicrochip Technology
ATMEGA645P-AU - 8-bit AVR MCU 64KB Flash 16MHz TQFP-64 | Microchip
ATMEGA645P-AU ✓ ActiveSpecification Comparison
| Parameter | ATMEGA649A-AUR | ATMEGA645P-AU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $5.72 | $4.60 |
| Core Architecture | 8-bit AVR RISC | 8-bit AVR RISC |
| Flash Program Memory | 64 KB (32K x 16) | — |
| EEPROM | 2 KB | 2 KB |
| SRAM | 4 KB | 4 KB |
| Maximum Clock Speed | 16 MHz | — |
| Supply Voltage Range | 4.5 V to 5.5 V | 2.5 V to 5.5 V |
| I/O Ports | 53 general-purpose I/O lines | — |
| LCD Controller | Yes, on-chip with internal contrast control | — |
| JTAG Interface | Yes (boundary-scan, on-chip debug, programming) | — |
| Instructions | 130 instructions, most single-cycle | — |
| Package | 64-TQFP (14x14 mm) | 64-TQFP (14 x 14 mm) |
| Mounting Type | Surface Mount | Surface Mount |
| Flash Programming | In-System Programmable (ISP), read-while-write | — |
| Operating Temperature Grade | Industrial | — |
| Data Bus Width | 8 bit | — |
| Lifecycle Status | Active | — |
| Flash Memory | — | 64 KB (32K x 16) ISP |
| Maximum Clock Frequency | — | 16 MHz |
| General Purpose I/O | — | 54 lines |
| Working Registers | — | 32 x 8-bit general purpose |
| Operating Temperature | — | -40C to +85C (Industrial) |
| Programming Interface | — | ICSP (In-Circuit Serial Programming) |
| Debug Support | — | debugWIRE via MPLAB SNAP |
| Low Power Technology | — | picoPower |
| Approximate Throughput | — | up to 16 MIPS at 16 MHz (1 MIPS/MHz) |
| RoHS Status | — | Compliant (Green package per Microchip listings) |