ATMEGA649A-AUR vs ATMEGA645A-AU Comparison
Detailed side-by-side comparison of ATMEGA649A-AUR by Microchip Technology and ATMEGA645A-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
ATMEGA645A-AU - 8-bit AVR MCU 64KB Flash 16MHz TQFP-64 | Microchip
ATMEGA645A-AU ✓ ActiveSpecification Comparison
| Parameter | ATMEGA649A-AUR | ATMEGA645A-AU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $5.72 | $3.95 |
| 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 | — |
| I/O Ports | 53 general-purpose I/O lines | — |
| LCD Controller | Yes, on-chip with internal contrast control | Yes, up to 4 COM x 25 SEG |
| JTAG Interface | Yes (boundary-scan, on-chip debug, programming) | — |
| Instructions | 130 instructions, most single-cycle | — |
| Package | 64-TQFP (14x14 mm) | 64-TQFP (14x14 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 | — |
| Max CPU Frequency | — | 16 MHz |
| Flash Memory | — | 64 KB (32K x 16) In-System Programmable |
| General Purpose I/O | — | 54 GPIO |
| 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 |
| Communication Interfaces | — | USART, SPI, TWI (I2C) |
| Timers | — | 2 x 8-bit, 1 x 16-bit (plus watchdog) |
| Number of Pins | — | 64 |
| RoHS Status | — | Compliant |
| MSL Level | — | [DATA_NEEDED: moisture sensitivity level] |