ATMEGA640V-8AU vs ATMEGA649V-8AU Comparison
Detailed side-by-side comparison of ATMEGA640V-8AU by Microchip Technology and ATMEGA649V-8AU 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
ATMEGA640V-8AU - 8MHz 64KB Flash AVR MCU 100-TQFP | Microchip
ATMEGA640V-8AU ✓ ActiveMicrochip Technology
ATMEGA649V-8AU - 64KB Flash 8MHz LCD AVR MCU | Microchip
ATMEGA649V-8AU ✓ ActiveSpecification Comparison
| Parameter | ATMEGA640V-8AU | ATMEGA649V-8AU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $3.95 | $7.28 |
| Core Architecture | 8-bit AVR RISC | — |
| Max Clock Frequency | 8 MHz | — |
| Flash Memory | 64 KB (32K x 16) | 64 KB (32K x 16), ISP, read-while-write |
| SRAM | 8 KB | 4 KB |
| EEPROM | 4 KB | 2 KB |
| Supply Voltage Range | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| General Purpose I/O | 86 lines | 54 I/O lines (69 available on 100-pin variant) |
| Timers/Counters | 6 | — |
| USART Interfaces | 4 | — |
| Serial Interfaces | SPI, 2-wire (I2C-compatible), 4x USART | — |
| ADC | 10-bit, 16-channel | 10-bit, 8 channels |
| Analog Comparator | Yes, on-chip | — |
| Watchdog Timer | Yes, with separate on-chip oscillator | — |
| External Memory Interface | EBI/EMI | — |
| Package | 100-TQFP (14 x 14 mm) | 64-TQFP, 14 x 14 mm |
| Mounting Type | Surface Mount | Surface Mount |
| Program Memory Type | ISP Flash | — |
| Series | AVR ATmega | — |
| RoHS Status | Compliant | — |
| Core | — | 8-bit AVR RISC |
| Maximum Clock Speed | — | 8 MHz |
| LCD Controller | — | Integrated segment LCD driver (up to 25 segments x 4 commons) |
| Debug / Boundary Scan | — | JTAG interface (IEEE 1149.1 boundary-scan) |
| Working Registers | — | 32 general purpose registers |
| Programming | — | In-System Programmable (ISP), ICSP via MPLAB SNAP |
| Operating Temperature | — | -40C to +85C (industrial) |
| Data Bus Width | — | 8 Bit |
| RoHS / Green | — | GREEN package per ADatasheet listing |
| Peripherals | — | Timers, USART, SPI, TWI, RTC/TOSC pins |