ATMEGA644P-20MQ vs ATMEGA324P-20MQ Comparison
Detailed side-by-side comparison of ATMEGA644P-20MQ by Microchip Technology and ATMEGA324P-20MQ 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
ATMEGA644P-20MQ - 8-bit AVR MCU 64KB 20MHz VQFN-44 | Microchip
ATMEGA644P-20MQ NrndMicrochip Technology
ATMEGA324P-20MQ - 8-bit AVR MCU 32KB 20MHz VQFN-44 | Microchip
ATMEGA324P-20MQ β ActiveSpecification Comparison
| Parameter | ATMEGA644P-20MQ | ATMEGA324P-20MQ |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Nrnd | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $2.48 | $4.15 |
| Core Architecture | AVR 8-bit RISC | β |
| CPU Speed | 20 MHz | β |
| Throughput | Up to 20 MIPS (1 MIPS per MHz) | β |
| Flash Program Memory | 64 KB (32K x 16) | β |
| SRAM | 4 KB (4,096 bytes) | 2 KB |
| EEPROM | 2 KB (2,048 bytes) | 1 KB |
| Operating Voltage | 5 V | β |
| Number of I/O | 32 | 32 general purpose I/O lines |
| Digital Communication Peripherals | 2 UART | β |
| Oscillator Type | Internal | β |
| Instructions | 131 powerful instructions, most single-cycle | β |
| Package | 44-VQFN (7x7 mm) with exposed pad | 44-VQFN (7x7 mm), exposed pad |
| Mounting Type | Surface Mount | Surface Mount |
| Temperature Grade | Industrial, extended temperature | β |
| Packaging | Tape & Reel (TR) | β |
| Technology Feature | picoPower low-power, green/RoHS | β |
| Programming | ICSP via 2 I/O pins + reset, MPLAB SNAP compatible | β |
| Lifecycle | Mature; NRND - replaced by ATmega644PA | β |
| Core | β | AVR 8-bit RISC |
| Core Size | β | 8-bit |
| Maximum Clock Frequency | β | 20 MHz |
| Flash Memory | β | 32 KB (16K x 16) ISP |
| Supply Voltage | β | 5 V |
| Operating Temperature Range | β | Extended temperature (M suffix) |
| Instruction Set | β | 131 powerful instructions |
| Working Registers | β | 32 general purpose registers |
| Low Power Technology | β | picoPower |
| Programming / Debug | β | ICSP, JTAG |
| Timers / RTC | β | Real time counter plus three flexible timers |
| RoHS Status | β | Green package (per FindIC listing) |