ATMEGA645A-AU vs ATMEGA649V-8AUR Comparison
Detailed side-by-side comparison of ATMEGA645A-AU by Microchip Technology and ATMEGA649V-8AUR 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
ATMEGA649V-8AUR - 8MHz AVR MCU 64KB Flash LCD | Microchip
ATMEGA649V-8AUR ✓ ActiveSpecification Comparison
| Parameter | ATMEGA645A-AU | ATMEGA649V-8AUR |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $3.95 | $4.88 |
| 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 | — |
| EEPROM | 2 KB | — |
| SRAM | 4 KB | — |
| General Purpose I/O | 54 GPIO | 54 I/O lines |
| Package | 64-TQFP (14x14 mm) | 64-TQFP (14x14 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] | [DATA_NEEDED: operating temperature range] |
| ADC | 10-bit, up to 8 channels | — |
| LCD Controller | Yes, up to 4 COM x 25 SEG | — |
| Communication Interfaces | USART, SPI, TWI (I2C) | [DATA_NEEDED: USART/SPI/TWI count] |
| Timers | 2 x 8-bit, 1 x 16-bit (plus watchdog) | [DATA_NEEDED: timer peripheral count and sizes] |
| Number of Pins | 64 | — |
| RoHS Status | Compliant | Compliant |
| MSL Level | [DATA_NEEDED: moisture sensitivity level] | — |
| Program Memory Size | — | 64KB (32K x 16) Flash |
| EEPROM Size | — | 2KB |
| SRAM Size | — | 4KB |
| Maximum Clock Frequency | — | 8 MHz |
| Supply Voltage Range | — | 1.8 V to 5.5 V |
| LCD Driver | — | Segment LCD controller (up to 4x40 / 132 segments per datasheet) |
| JTAG Interface | — | Yes (boundary-scan and on-chip debug) |
| Packaging | — | Tape & Reel (R suffix) |
| Lifecycle Status | — | Active (newer device available: ATMEGA649A) |
| ADC Resolution | — | [DATA_NEEDED: ADC resolution and channels] |
| MIPS Rating | — | [DATA_NEEDED: MIPS at 8 MHz] |
| MSL Rating | — | [DATA_NEEDED: moisture sensitivity level] |