ATSAM3U4EA-CU vs ATSAMD21G18A-AU Comparison
Detailed side-by-side comparison of ATSAM3U4EA-CU by Microchip Technology and ATSAMD21G18A-AU 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
ATSAM3U4EA-CU - 96MHz Cortex-M3 MCU 256KB Flash LFBGA-144 | Microchip
ATSAM3U4EA-CU ✓ ActiveMicrochip Technology
ATSAMD21G18A-AU - 48MHz Cortex-M0+ MCU 256KB Flash | Microchip
ATSAMD21G18A-AU ✓ ActiveSpecification Comparison
| Parameter | ATSAM3U4EA-CU | ATSAMD21G18A-AU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $12.05 | $2.78 |
| Core Architecture | ARM Cortex-M3 (32-bit RISC) | — |
| Maximum CPU Clock | 96 MHz | — |
| Instruction Set | Thumb-2 | — |
| Program Memory | 256 KB Flash (dual-bank, 128-bit wide access) | — |
| SRAM | 52 KB | 32 KB |
| Operating Voltage | 1.8 V / 3.3 V | — |
| Package | 144-ball LFBGA (10x10 mm) | 48-pin TQFP (7x7 mm) |
| USB | High-Speed USB 2.0 Device (480 Mbps, integrated transceiver) | — |
| Memory Card Interface | High-Speed MCI (SDIO/SD/MMC) | — |
| External Bus Interface | Yes (EBI - SRAM, NOR, NAND) | — |
| Memory Protection Unit | Yes (MPU) | — |
| GPIOs | Up to 96 | — |
| ADC | 12-bit | 14-channel, 12-bit |
| Mounting Type | Surface Mount (BGA) | Surface Mount |
| Operating Temperature | -40°C to +85°C | — |
| Core | — | ARM Cortex-M0+ (32-bit) |
| Series | — | SAM D21G (Functional Safety / FuSa) |
| Maximum CPU Frequency | — | 48 MHz |
| CoreMark/MHz | — | 2.46 |
| Flash Memory | — | 256 KB (256K x 8) |
| Operating Voltage Range | — | 1.62 V to 3.63 V |
| Programmable I/O Pins | — | Up to 52 |
| DAC | — | 10-bit |
| Peripheral Touch Controller (PTC) | — | Up to 256 channels (capacitive touch/proximity) |
| DMAC Channels | — | 12 |
| Event System Channels | — | 12 |
| Timer/Counters | — | Up to five 16-bit |
| Communication Peripherals (SERCOM) | — | Configurable as USART / SPI / I2C |
| Debug Interface | — | Serial Wire Debug (SWD), 2-pin |
| Sleep Modes | — | Idle, Standby with SleepWalking |
| RoHS Status | — | Compliant (Green package) |