ATMEGA1284P-MU vs ATMEGA644PA-MNR Comparison
Detailed side-by-side comparison of ATMEGA1284P-MU by Microchip Technology and ATMEGA644PA-MNR 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
ATMEGA1284P-MU - 128KB Flash 8-Bit AVR MCU 20MHz | Microchip
ATMEGA1284P-MU ✓ ActiveMicrochip Technology
ATMEGA644PA-MNR - 8-bit AVR MCU 64KB Flash 20MHz | Microchip
ATMEGA644PA-MNR ✓ ActiveSpecification Comparison
| Parameter | ATMEGA1284P-MU | ATMEGA644PA-MNR |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $4.10 | $1.80 |
| Core Architecture | 8-bit AVR RISC | — |
| Max CPU Clock | 20 MHz | — |
| Flash Memory | 128 KB (64K x 16) ISP, Read-While-Write | — |
| EEPROM | 4 KB | — |
| SRAM | 16 KB | — |
| Supply Voltage Range | 2.7 V to 5.5 V | — |
| I/O Lines | 32 general purpose | — |
| USART | 2 | — |
| Timer/Counters | 3 (with compare modes and PWM) | — |
| Real Time Counter (RTC) | Yes | — |
| 10-bit ADC | 8 channels | — |
| TWI (I2C) | 1, byte-oriented 2-wire | — |
| SPI | 1 | — |
| Watchdog Timer | Yes, programmable with on-chip oscillator | — |
| Package | 44-VQFN (7x7 mm) with Exposed Pad | — |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | [DATA_NEEDED: temperature range for -MU speed grade] | [DATA_NEEDED: exact grade per suffix; Mouser lists 105C grade variant] |
| Programming Interface | ISP via SPI, self-programming boot support | — |
| RoHS Status | Compliant (per Microchip product page) | — |
| Core | — | AVR 8-bit RISC |
| Program Memory Size | — | 64 KB (32K x 16) Flash |
| Program Memory Type | — | ISP FLASH, read-while-write |
| EEPROM Size | — | 2 KB |
| SRAM Size | — | 4 KB (4K x 8) |
| CPU Speed | — | 20 MHz |
| Number of I/O | — | 32 |
| General Purpose Working Registers | — | 32 |
| Instructions | — | 131, mostly single-clock cycle |
| Oscillator Type | — | Internal |
| Package / Case | — | 44-VQFN (7x7 mm) Exposed Pad |
| Packaging | — | Tape & Reel (TR) |
| Programming / Debug | — | ICSP, JTAG |
| Technology Feature | — | picoPower low-power technology |
| Operating Voltage Range | — | [DATA_NEEDED: exact VCC range for this suffix] |