The ATSAMD21J18A-MU is a low-power microcontroller from Quarktwin Technology Ltd. that features a 32-bit ARM Cortex-M0+ processor operating at a maximum frequency of 48MHz. It includes 256KB of Flash memory and 32KB of SRAM, making it suitable for applications requiring moderate processing power and memory capacity. The microcontroller supports a variety of peripherals, including a full-speed USB 2.0 interface, multiple serial communication interfaces (SERCOM), and a 12-channel Direct Memory Access Controller (DMAC). It is designed for flexibility with features such as an external interrupt controller, multiple timer/counter configurations, and a 12-bit Analog-to-Digital Converter (ADC) with up to 20 channels. The device operates within a voltage range of 1.62V to 3.63V and is available in a 64-pin QFN package. The ATSAMD21J18A-MU is drop-in compatible with the SAM D20 series, facilitating easy migration between devices in the product line. This microcontroller is ideal for applications that require efficient power management and a rich set of integrated features.
IC MCU 32BIT 256KB FLASH 64QFN Product overview: ATSAMD21J18A-MU from Microchip Technology is an Embedded Microcontroller MCU for industrial control, IoT devices, embedded automation, motor control, metering, and low-power board designs. It is useful for engineers and buyers comparing datasheets, replacement parts, BOM lines, package options, lifecycle status, and procurement availability. Key searchable attributes include 32-bit, 32BIT, 256KB. Search-friendly keywords include microcontroller, MCU, embedded control, ARM Cortex, Flash memory, low-power, 32-bit, 32BIT, 256KB, Embedded Microcontroller MCU. This listing supports clearer product discovery for industrial, commercial, repair, automation, power, sensing, and embedded system projects. Product number 685-ATSAMD21J18A-MU can be used for catalog matching and distributor lookup.
Manufacturer: Microchip Technology
Win Source Part Number: 811111-ATSAMD21J18A-
Packaging: Tray
Mounting Style: SMD
Core Processor: ARM Cortex -M0+
Speed: 48MHz
Core Size: 32-Bit
Connectivity: I2C, LINbus, SPI, UART/USART, USB
Peripherals: Brown-out Detect/Reset, DMA, I2S, POR, PWM, WDT
Number of I/O: 52
Program Memory Size: 256KB (256K x 8)
Program Memory Type: FLASH
RAM Size: 32K x 8
Data Converters: A/D 20x12b; D/A 1x10b
Oscillator Type: Internal
Supplier Device Package: 64-QFN (9x9)
Temperature Range - Operating: -40°C ~ 85°C
Manufacturer Package: 64-VFQFN Exposed Pad
Popularity: Medium
Fake Threat In the Open Market: 66 pct.
Supply and Demand Status: Limited
Manufacturer Pack Quantity: 260
MSL Level: 3 (168 Hours)
Part Number Series: ATSAMD21J18
Voltage - Supply (Vcc/Vdd): 1.62V ~ 3.6V
64QFN IND TEMP, GREEN,1.6-3.6V,48MHz
64QFN IND TEMP, GREEN,1.6-3.6V,48MHz
64QFN IND TEMP, GREEN,1.6-3.6V,48MHz
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MCU, 32BIT, 48MHZ, QFN-64; Product Range:SAM32 Family SAM D2X Series Microcontrollers; Device Core:ARM Cortex-M0+; Data Bus Width:32bit; Operating Frequency Max:48MHz; Program Memory Size:256KB; No. of Pins:64Pins RoHS Compliant: Yes
IC MCU 32BIT 256KB FLASH 64QFN
ARM® Cortex®-M0+ SAM D21J, Functional Safety (FuSa) Microcontroller IC 32-Bit Single-Core 48MHz 256KB (256K x 8) FLASH 64-QFN (9x9)
ARM® Cortex®-M0+ SAM D21J, Functional Safety (FuSa) Microcontroller IC 32-Bit Single-Core 48MHz 256KB (256K x 8) FLASH 64-QFN (9x9)
| ERSAELECTRONICS PTE. LTD. | Win Source Electronics | RS Components, Ltd. | RS Components, Ltd. | DigiKey | ODG (Origin Data Global) | VAST STOCK CO., LIMITED | Lingto Electronic Limited | Newark, An Avnet Company | Shenzhen Shengyu Electronics Technology Limited | Quarktwin Technology Ltd. | |
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| Product Category | Microcontrollers (MCU) | Microcontrollers (MCU) | Microcontrollers (MCU) | Microcontrollers (MCU) | Microcontrollers (MCU) | Microcontrollers (MCU) | Microcontrollers (MCU) | Microcontrollers (MCU) | Microcontrollers (MCU) | Microcontrollers (MCU) | Microcontrollers (MCU) |
| Product Number | 685-ATSAMD21J18A-MU | 811111-ATSAMD21J18A-MU | 1773762 | 1773762P | ATSAMD21J18A-MU-ND | ATSAMD21J18A-MU | ATSAMD21J18A-MU | ATSAMD21J18A-MU | 45X9946 | ATSAMD21J18A-MU | ATSAMD21J18A-MU |
| Product Name | 32-bit 32BIT 256KB Embedded Microcontroller MCU | Embedded - Embedded - Microcontrollers - ATSAMD21J18A-MU | Microcontrollers | Microcontrollers | Microcontrollers | Microcontrollers | ARM Microcontrollers - MCU | Embedded - Microcontrollers | Mcu, 32Bit, 48Mhz, Qfn-64; Product Range Microchip | Integrated Circuits (ICs) - Embedded - Microcontrollers | Microcontrollers |
| Data Bus | 32 Bit | 32 Bit | 32 Bit; 32bit | 32 Bit; 32bit | 32 Bit | 32 Bit | 32 Bit; 32-Bit | 32 Bit | 32 Bit; 32-Bit Single-Core | ||
| Clock Speed | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | ||||
| RAM | 32 KB | 256 KB | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | ||||
| Supply Voltage | 1.62 to 3.6 volts | 1.62 to 3.6 volts | 1.62 to 3.6 volts | 1.62 to 3.6 volts | 3.6 to 1.62 volts | ||||||
| Serial Interface | I2C/I2S/SPI/USART/USB | SPI; UART; USART; USB |
