ATSAM3U-EK vs ATSAM4S-EK Comparison
Detailed side-by-side comparison of ATSAM3U-EK by Microchip Technology and ATSAM4S-EK by Microchip Technology. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Specification Comparison
| Parameter | ATSAM3U-EK | ATSAM4S-EK |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Development Boards | Development Boards |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $119.40 | $179.40 |
| Product Type | Evaluation Kit / Development Board | Evaluation / Development Kit |
| Target MCU | SAM3U4E (AT91SAM3 family) | — |
| Core | 32-bit ARM Cortex-M3 | ARM Cortex-M4 32-bit RISC |
| Core Speed | 96 MHz | — |
| SRAM | 48 KB | — |
| ROM | 16 KB | — |
| NAND Flash Support | 256 KB | — |
| Crystals On Board | 32.768 kHz and 12 MHz | — |
| USB | High-Speed USB with integrated transceiver | — |
| Debug Interface | JTAG/SWD | — |
| Supported IDE | Atmel Studio 7 / Microchip Studio | Atmel Studio 6 (now Microchip Studio) |
| Board Dimensions | [DATA_NEEDED: board dimensions] | — |
| Supply Voltage | [DATA_NEEDED: supply voltage] | — |
| Operating Temperature | [DATA_NEEDED: operating temperature] | — |
| RoHS Status | Compliant | Compliant |
| Unit Price | USD 119.40 (as of 2026-09-20) | — |
| Target MCU Family | — | Atmel SMART SAM4S (ARM Cortex-M4) |
| Supported MCUs | — | SAM4S8 and SAM4S16 |
| Maximum CPU Clock | — | 120 MHz |
| On-board MCU Flash (SAM4S16) | — | 1024 KB |
| On-board MCU SRAM | — | 128 KB |
| On-board Storage | — | NAND Flash |
| Display | — | Integrated TFT LCD (touch-capable) |
| Touch Interface | — | Atmel QTouch library (buttons, wheels, sliders) |
| USB Interface | — | Full-speed USB Device port |
| Network Interface | — | Ethernet (EMAC) physical interface |
| Storage Expansion | — | SD/MMC card slot |
| Software Framework | — | Atmel Software Framework (ASF) |
| Crystal Frequencies | — | 0.032768 MHz (RTC) / 12 MHz (CPU reference) |
| Series | — | AT91SAM |