ATSAMD20J14A-CUT - SAM D20 32-bit ARM Cortex-M0+ MCU, 16KB Flash | Microchip
料号： ATSAMD20J14A-CUT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $1.46 | $1.46 |
| 10 | $1.31 | $13.10 |
| 100 | $1.17 | $117.00 |
| 500 | $1.05 | $525.00 |
| 1,000 | $0.94 | $940.00 |
ATSAMD20J14A-CUT 概述
An ARM Cortex-M0+ microcontroller is the smallest, most energy-efficient member of the ARM Cortex-M family, combining a Thumb-2 instruction set with a single-cycle multiplier and NVIC interrupt controller. The ATSAMD20J14A sits inside the broader microcontrollers (MCU) product category, which falls under integrated circuits (ICs) and ultimately semiconductors in the taxonomy hierarchy. Cortex-M0+ cores are widely chosen for battery-powered and cost-sensitive applications because they deliver 32-bit performance at power levels comparable to 8-bit MCUs.
Key features include the Cortex-M0+ core with single-cycle hardware multiply, 16 KB self-programmable Flash, 2 KB SRAM, and the Microchip Event System for inter-peripheral signaling without CPU intervention. The peripheral set comprises up to 52 programmable I/O pins, SERCOM (configurable serial communication) channels, a 12-bit 350 kS/s ADC, a 10-bit DAC, four 16-bit Timer/Counters, and a Real-Time Clock. Full-speed USB 2.0 device support and a Peripheral Touch Controller (PTC) for capacitive touch are integrated on most SAM D20J devices, though exact peripheral count on the J14 die is device-specific.
The device leverages Microchip's proprietary Atmel/Microchip low-power design, providing multiple Sleep modes (IDLE, STANDBY, BACKUP) with current consumption down to the low microamp range, suitable for battery-powered end nodes. The integrated Sleepwalking peripheral Event System allows peripherals to wake the CPU only when meaningful events occur, dramatically reducing average power in sensor applications. The Cortex-M0+ pipeline keeps deterministic interrupt latency.
Typical applications include IoT sensor nodes, wearable fitness bands, BLE/Bluetooth proximity beacons, low-cost industrial sensor hubs, and consumer Human Interface Devices (HID) such as keyboards and remote controls. The PTC enables touch button or slider interfaces for white goods and consumer appliances. The compact 5x5 mm UFBGA footprint suits space-constrained designs where PCB area is at a premium.
When designing with this MCU, allocate decoupling capacitors (100 nF + 1 uF) close to each VDD pin and follow Microchip's recommended DFM layout for the UFBGA escape pattern. Consider ATSAMD20J14A-CNT or ATSAMD20J14A-AUT if a different operating temperature grade or pin-package combination is required; these are pin-to-pin compatible with the CUT variant for design reuse.
直接替换替代料： ATSAMD20J14A-CUT ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ATSAMD20J14A-CUT （相同外形与封装尺寸） ——差异在于 ADC, Operating Temperature, Package, Mounting Type, RoHS Status.
快速对比工具——选择替代料号进行并排对比：
ATSAMD20J14A-CNT
✅ 直接替换✓ 有现货
$1.95 / 个
查看数据手册 →ATSAMD20J14A-AUT
✅ 直接替换✓ 有现货
$1.85 / 个
查看数据手册 →ATSAMD20J14A-AUT
✅ 直接替换✓ 有现货
$1.85 / 个
查看数据手册 →ATSAMD20J14A-ANT
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ATSAMD20J17A-CUT
✅ 直接替换✓ 有现货
$2.05 / 个
查看数据手册 →ATSAMD20J18A-CUT
✅ 直接替换📋 参考替代料（不在目录中）
ATSAMD21J16A-CUT
✅ 直接替换📋 参考替代料（不在目录中）
ATSAMD20J14A-CUT 最大额定值与电气特性
| Core | ARM Cortex-M0+ (32-bit) |
| Maximum CPU Frequency | 48 MHz |
| Flash Memory | 16 KB |
| SRAM | 2 KB |
| Supply Voltage (VDD) | 1.62 V to 3.63 V |
| 工作温度 | -40C to +85C (industrial) |
| 封装 | 64-ball UFBGA (5x5 mm) |
| ADC | 12-bit, 350 kS/s (per family) |
| DAC | 10-bit (per family) |
| Timer/Counters | 4 x 16-bit (per family) |
| RTC | Yes, with calendar mode |
| Communication | SERCOM (UART/SPI/I2C configurable) |
| Peripheral Touch Controller | Yes (PTC) |
| 安装类型 | Surface Mount |
| MSL 等级 | MSL3 (per JEDEC J-STD-020) |
| RoHS 状态 | Compliant (Green) |
ATSAMD20J14A-CUT 64-ball ufbga (5x5 mm) 引脚配置指南
ATSAMD20J14A-CUT（64-ball ufbga (5x5 mm) 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： ATSAMD20J14A-CUT.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ATSAMD20J14A-CUT 适用于 6 应用s: IoT Sensor Node, Wearable Fitness Band, Capacitive Touch Appliance Keypad, USB HID Device, Industrial Sensor Hub, Smart Home Wireless Sensor.
IoT Sensor Node
The ATSAMD20J14A-CUT's Cortex-M0+ core at 48 MHz with Sleepwalking Event System enables ultra-low-power IoT sensor nodes drawing single-digit uA in standby. Its 1.62 V to 3.63 V wide supply range permits direct connection to single-cell Li-ion or 2xAA battery chemistries without boost regulators. The 12-bit ADC at 350 kS/s digitizes temperature, humidity, or motion sensor outputs while the 16 KB Flash holds application firmware and 2 KB SRAM buffers sensor data. Compared to discrete 8-bit MCU designs, the SAM D20 family shrinks BOM by integrating the ADC, RTC, and configurable SERCOM channels in one 5x5 mm UFBGA.
推荐
Wearable Fitness Band
The 5x5 mm UFBGA package and Cortex-M0+ low active current make the ATSAMD20J14A-CUT a strong fit for wearable fitness bands where PCB area and battery life are constrained. The integrated 10-bit DAC drives haptic feedback buzzers while the Peripheral Touch Controller supports touch-button or slider interfaces on the band surface. The SERCOM channels connect to BLE modules like the RN4870 for phone sync, and the RTC enables timestamped activity logging. Multiple low-power Sleep modes (IDLE, STANDBY, BACKUP) keep average current below 50 uA in always-on wearables.
推荐
Capacitive Touch Appliance Keypad
The ATSAMD20J14A-CUT's Peripheral Touch Controller (PTC) drives capacitive touch buttons and sliders in white-goods appliances without external touch ICs, reducing system cost and PCB area. The 16 KB Flash holds keypad decoding firmware and 2 KB SRAM handles real-time debounce logic. The wide 1.62 V to 3.63 V supply tolerates unregulated 3.3 V rails from small switched-mode supplies common in appliances. Compared to mechanical keypads, PTC-based designs improve reliability against moisture and wear while the -40C to +85C industrial grade handles kitchen and laundry environments.
推荐
USB HID Device
Although the J14 die does not include full-speed USB, the ATSAMD20J14A-CUT can drive USB HID peripherals through external SERCOM-to-USB bridges, making it suitable for low-cost keyboards, mice, or remote controls. The Cortex-M0+ at 48 MHz handles HID report generation with deterministic interrupt latency from the NVIC. The 16 KB Flash fits standard HID descriptor tables plus application logic. Compared to 8-bit AVR solutions, the 32-bit M0+ core simplifies USB stack porting and reduces firmware size via Thumb-2 efficiency.
推荐
Industrial Sensor Hub
The ATSAMD20J14A-CUT's industrial -40C to +85C temperature grade and 1.62 V to 3.63 V supply suit industrial sensor hubs mounted near machinery where 24 V supply is stepped down to 3.3 V. The 12-bit ADC at 350 kS/s reads multiple analog sensors while SERCOM channels aggregate I2C sensor data from thermocouples, pressure transducers, or load cells. The Cortex-M0+ Event System wakes the CPU only on peripheral triggers, keeping standby current low for battery-backed installations. Compared to PLC analog input modules, this MCU integrates the ADC, RTC, and serial interfaces in one 5x5 mm UFBGA.
推荐
Smart Home Wireless Sensor
The ATSAMD20J14A-CUT serves as a low-power host MCU for smart-home sensors using sub-GHz or 2.4 GHz radio companions like the ATSAMR21 or RN2483 LoRa module. The Cortex-M0+ handles sensor sampling, encryption, and radio packet framing while multiple Sleep modes maximize battery life for years-long deployments on coin cells. The compact 64-ball UFBGA package and 16 KB Flash fit typical Zigbee or LoRaWAN sensor firmware stacks. Compared to Wi-Fi-only designs, this approach trades throughput for sub-100 uA average current ideal for door/window or environmental sensors.
推荐
推荐产品汇总
工程参考数据： ATSAMD20J14A-CUT ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | ATSAMD20J14A-CNT | ATSAMD20J14A-AUT | ATSAMD20J17A-CUT | ATSAMD20J18A-CUT | ATSAMD21J16A-CUT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-ball UFBGA (5x5 mm) | 64-ball UFBGA (5x5 mm) - same | 64-ball UFBGA (5x5 mm) - same | 64-ball UFBGA (5x5 mm) - same | 64-ball UFBGA (5x5 mm) - same | 64-ball UFBGA (5x5 mm) - same |
| Core | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ |
| Flash Memory | 16 KB | 16 KB | 16 KB | 32 KB (+100%) | 64 KB (+300%) | 64 KB (+300%) |
| SRAM | 2 KB | 2 KB | 2 KB | 4 KB (+100%) | 8 KB (+300%) | 8 KB (+300%) |
| Maximum CPU Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Supply Voltage | 1.62 V to 3.63 V | 1.62 V to 3.63 V | 1.62 V to 3.63 V | 1.62 V to 3.63 V | 1.62 V to 3.63 V | 1.62 V to 3.63 V |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C | -40C to +125C (automotive) | -40C to +85C | -40C to +85C | -40C to +85C |
| Full-Speed USB Device | No | No | No | No | No | Yes (SAM D21 family) |
关键差异点
- Lowest-cost entry in the SAM D20J 64-ball UFBGA family （对比 ATSAMD20J17A-CUT)
- Pin-to-pin compatible industrial-temperature variant in tray packaging （对比 ATSAMD20J14A-CNT)
- Upgrades to higher memory without PCB rework （对比 ATSAMD20J18A-CUT)
设计说明
Decouple every VDD and VDDCORE pin with a 100 nF ceramic capacitor placed within 3 mm of the pin; add a bulk 4.7 uF or 10 uF capacitor on the main VDD rail. The wide 1.62 V to 3.63 V supply allows direct 1.8 V or 3.3 V operation, but for 2.5 V systems an LDO such as MCP1700 keeps voltage stable under dynamic load. In Sleepwalking designs, gate all unused peripherals via the Clock Mask register to keep standby current below 5 uA.
The 64-ball UFBGA uses a 0.5 mm ball pitch and requires laser-drilled vias or micro-via-in-pad escape for reliable reflow soldering. Per Microchip's SAM D20 hardware design guide, fan-out each BGA signal to inner layers on a 0.4 mm via-pad pitch with 0.2 mm trace-and-space rules. Place the 32.768 kHz crystal traces within 5 mm of the XIN/XOUT pins and guard them with a ground ring to attenuate coupling from switching digital signals.
Do not exceed 3.63 V on any VDD pin - the on-chip brown-out detector and Flash are rated only to 3.63 V. When using the SERCOM modules, configure the peripheral multiplexing in the PORT multiplexer before enabling the SERCOM clock, otherwise the peripheral will not respond. The PTC acquisition pins require firmware calibration for moisture compensation; failing to run the COMPCTRL_Touch calibration sequence causes erratic button readings in humid environments.
合规信息
Green/RoHS-compliant per Mouser listing ("GREEN" suffix). Industrial temperature grade -40C to +85C. For AEC-Q100 automotive qualification, choose ATSAMD20J14A-AUT.
