ATMEGA645A-MU vs ATMEGA645P-MU Comparison
Detailed side-by-side comparison of ATMEGA645A-MU by Microchip Technology and ATMEGA645P-MU 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-MU - 8-Bit AVR MCU 16MHz 64KB Flash | Microchip
ATMEGA645A-MU ✓ ActiveMicrochip Technology
ATMEGA645P-MU - 8-Bit AVR MCU 64KB 16MHz 64-QFN | Microchip
ATMEGA645P-MU ✓ ActiveSpecification Comparison
| Parameter | ATMEGA645A-MU | ATMEGA645P-MU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Core Processor | AVR | AVR 8-bit RISC |
| Core Size | 8-Bit | 8-bit |
| Speed | 16 MHz | 16 MHz |
| Flash Memory | 64 KB (32K x 16) | 64 KB (32K x 16) ISP |
| EEPROM Size | 2 KB | — |
| RAM Size | 4 KB | — |
| Supply Voltage (Vcc/Vdd) | 1.8 V to 5.5 V | — |
| Number of I/O | 54 / 69 general purpose I/O lines | — |
| Package | 64-QFN (9x9 mm) Exposed Pad (64-VFQFN) | 64-QFN (9x9 mm) MLF, surface mount |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | [DATA_NEEDED: Operating Temperature] | [DATA_NEEDED: operating temperature range] |
| ADC Resolution | 10-bit | 10-bit |
| Oscillator Type | Internal + External | — |
| Programming Interface | ISP, JTAG, ICSP | — |
| Series | AVR ATmega | — |
| RoHS Status | Compliant | Green / RoHS compliant (per FindIC listing) |
| EEPROM | — | 2 KB |
| SRAM | — | 4 KB |
| GPIO Count | — | 54 |
| Operating Voltage Range | — | 2.7 V to 5.5 V |
| ADC Channels | — | 8 |
| Peripherals | — | LCD controller, Brown-out Detect/Reset, POR, PWM, WDT |
| Connectivity | — | SPI, UART/USART, TWI (I2C) |
| Technology Feature | — | picoPower low-power technology |
| Debug Interface | — | JTAG |