ATSAMD20G14B-MUT - ARM Cortex-M0+ 48MHz 16KB Flash MCU | Microchip
部品番号: ATSAMD20G14B-MUT ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $1.92 | $1.92 |
| 10 | $1.78 | $17.80 |
| 100 | $1.56 | $156.00 |
| 500 | $1.38 | $690.00 |
| 1,000 | $1.24 | $1,240.00 |
| 3,000 | $1.1 | $3,300.00 |
ATSAMD20G14B-MUT 概要
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (SRAM), and programmable peripherals on one silicon die. The SAM D20 family belongs to the broader hierarchy: ARM Cortex-M0+ core -> 32-bit RISC microcontroller -> embedded MCU -> semiconductor. The Cortex-M0+ architecture delivers Thumb-2 instruction efficiency at extremely low active and sleep currents, making this category the standard for battery-powered and always-on embedded designs.
Key features include the Cortex-M0+ core with single-cycle I/O access, hardware multiplier, and atomic bit-banding in the peripheral address space. The device offers up to 38 GPIO lines, six SERCOM modules that can each be configured as USART, I2C, or SPI, a 12-channel 350 kSPS 12-bit ADC, a 10-bit 350 kSPS DAC, and two analog comparators. An 8-channel event system and a 16-bit real-time counter/counter with capture/compare (TC) and timer/counter for control (TCC) blocks enable precise PWM generation.
The 'B' revision of the SAM D20G14 silicon adds Atmel START / Microchip Studio project compatibility, improved power-down current figures, and refined ADC gain/offset calibration. The 'U' package suffix indicates an extended industrial temperature grade (-40 °C to +85 °C), and the 'T' suffix denotes Tape & Reel packaging for high-volume surface-mount assembly.
Typical applications include low-power IoT sensor nodes, home-automation controllers, smart-metering endpoints, consumer HMI keypads, and industrial sensor hubs. The combination of 16 KB Flash, 2 KB SRAM, and the Cortex-M0+ core comfortably fits protocols such as Bluetooth Low Energy controller stacks, LoRaWAN device drivers, Modbus RTU slaves, and small graphical user interfaces.
Design consideration: place a 1 µF X7R bypass capacitor within 5 mm of each VDDCORE/VDDIO pin pair and use a 100 nF high-frequency decoupling cap directly on the analog AVDD rail to preserve ADC SNR. Keep the SWD clock and SWDIO traces length-matched and surrounded by GND to avoid debugger errors at 48 MHz.
This page synthesizes distributor pricing, drop-in alternatives from the same SAM D20 family, and practical design notes that complement the manufacturer datasheet with engineer-friendly guidance.
ドロップイン代替品: ATSAMD20G14B-MUT — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: ATSAMD20G14B-MUT （同一形状・フットプリント） — 相違点: ADC, Package, DAC, Core, Operating Temperature.
クイック比較ツール — 並列比較する代替部品を選択:
ATSAMD20G14B-MU
✅ ドロップイン✓ 在庫あり
$1.55 / 個
データシートを見る →ATSAMD20G14A-MU
✅ ドロップイン📋 参考代替品（カタログ未掲載）
ATSAMD20G14A-MNT
✅ ドロップイン✓ 在庫あり
$1.38 / 個
データシートを見る →ATSAMD20G14A-MN
✅ ドロップイン✓ 在庫あり
$1.89 / 個
データシートを見る →ATSAMD20G14B-MUT
✅ ドロップイン✓ 在庫あり
$1.1 / 個
データシートを見る →ATSAMD20G14A-AN
✅ ドロップイン✓ 在庫あり
$2.03 / 個
データシートを見る →ATSAMD20G14B-MUT 最大定格＆電気的特性
| Core Architecture | ARM Cortex-M0+ |
| データバス幅 | 32-bit |
| Maximum CPU Frequency | 48 MHz |
| Program Memory (Flash) | 16 KB (16K x 8) |
| Data Memory (SRAM) | 2 KB |
| Supply Voltage Range (VDD) | 1.62 V to 3.63 V |
| I/O Pins (GPIO) | Up to 38 |
| SERCOM Modules | 6 (configurable USART/I2C/SPI) |
| ADC | 12-bit, up to 12 channels, 350 kSPS |
| DAC | 10-bit, 1 channel, 350 kSPS |
| Analog Comparators | 2 |
| Timer/Counters (TC) | Up to 6 (16-bit) |
| Timer/Counter for Control (TCC) | Up to 3 (16-bit) |
| RTC | 16-bit with calendar mode |
| Event System Channels | 8 |
| 動作温度 | -40 °C to +85 °C (industrial) |
| パッケージ | 48-pin QFN (7x7 mm) with exposed pad |
| 実装タイプ | Surface Mount |
| MSLレベル | 3 (per JEDEC J-STD-020) |
| RoHS ステータス | Compliant |
ATSAMD20G14B-MUT ピン構成
| ピン 1 | PA00 — GPIO / TCC2 channel 0 / SERCOM1 PAD0 |
| ピン 2 | PA01 — GPIO / TCC2 channel 1 / SERCOM1 PAD1 |
| ピン 3 | PA02 — GPIO / analog input (AIN0) |
| ピン 4 | PA03 — GPIO / analog input (AIN1) / VREFA |
| ピン 5 | PA04 — GPIO / analog input (AIN2) / SERCOM0 PAD0 |
| ピン 6 | PA05 — GPIO / analog input (AIN3) / SERCOM0 PAD1 |
| ピン 7 | PA06 — GPIO / analog input (AIN4) / SERCOM0 PAD2 |
| ピン 8 | PA07 — GPIO / analog input (AIN5) / SERCOM0 PAD3 |
| ピン 9 | VDDIO — Digital I/O supply voltage (1.62 V to 3.63 V) |
| ピン 10 | GND — Ground |
| ピン 11 | PA08 — GPIO / NMI / analog input (AIN16) |
| ピン 12 | PA09 — GPIO / SERCOM2 PAD0 / TCC0 channel 0 |
| ピン 13 | PA10 — GPIO / SERCOM2 PAD1 / TCC0 channel 1 |
| ピン 14 | PA11 — GPIO / SERCOM2 PAD2 / TCC0 channel 2 |
| ピン 15 | PA14 — GPIO / SERCOM2 PAD2 / XIN32 |
| ピン 16 | PA15 — GPIO / SERCOM2 PAD3 / XOUT32 |
| ピン 17 | PA16 — GPIO / SERCOM1 PAD0 / TCC2 channel 0 |
| ピン 18 | PA17 — GPIO / SERCOM1 PAD1 / TCC2 channel 1 |
| ピン 19 | PA18 — GPIO / SERCOM1 PAD2 / TCC2 channel 2 |
| ピン 20 | PA19 — GPIO / SERCOM1 PAD3 / TCC2 channel 3 |
| ピン 21 | PA20 — GPIO / SERCOM5 PAD2 / TCC1 channel 4 |
| ピン 22 | PA21 — GPIO / SERCOM5 PAD3 / TCC1 channel 5 |
| ピン 23 | PA22 — GPIO / SERCOM3 PAD0 / TCC0 channel 4 |
| ピン 24 | PA23 — GPIO / SERCOM3 PAD1 / TCC0 channel 5 |
| ピン 25 | PA24 — GPIO / USB_DM (negative USB data, when present) |
| ピン 26 | PA25 — GPIO / USB_DP (positive USB data, when present) |
| ピン 27 | GND — Ground |
| ピン 28 | VDDIO — Digital I/O supply voltage |
| ピン 29 | PA27 — GPIO / SERCOM3 PAD3 / TCC1 channel 3 |
| ピン 30 | RESETN — External reset input (active low) |
| ピン 31 | PA28 — GPIO / SERCOM5 PAD0 / TCC1 channel 0 |
| ピン 32 | PA29 — GPIO / SERCOM5 PAD1 / TCC1 channel 1 |
| ピン 33 | PA30 — GPIO / SERCOM3 PAD2 / TCC1 channel 2 / SWCLK |
| ピン 34 | PA31 — GPIO / SERCOM3 PAD3 / TCC1 channel 3 / SWDIO |
| ピン 35 | PB02 — GPIO / SERCOM5 PAD0 / analog input (AIN10) |
| ピン 36 | PB03 — GPIO / SERCOM5 PAD1 / analog input (AIN11) |
| ピン 37 | PB04 — GPIO / SERCOM5 PAD2 / analog input (AIN12) |
| ピン 38 | PB05 — GPIO / SERCOM5 PAD3 / analog input (AIN13) |
| ピン 39 | PB06 — GPIO / SERCOM4 PAD0 / analog input (AIN14) |
| ピン 40 | PB07 — GPIO / SERCOM4 PAD1 / analog input (AIN15) |
| ピン 41 | PB08 — GPIO / SERCOM4 PAD0 / TCC0 channel 0 |
| ピン 42 | PB09 — GPIO / SERCOM4 PAD1 / TCC0 channel 1 |
| ピン 43 | PB10 — GPIO / SERCOM4 PAD2 / TCC0 channel 2 |
| ピン 44 | PB11 — GPIO / SERCOM4 PAD3 / TCC0 channel 3 |
| ピン 45 | PB12 — GPIO / SERCOM4 PAD0 / TCC2 channel 0 / NMI |
| ピン 46 | PB13 — GPIO / SERCOM4 PAD1 / TCC2 channel 1 |
| ピン 47 | PB14 — GPIO / SERCOM4 PAD2 / TCC2 channel 2 |
| ピン 48 | PB15 — GPIO / SERCOM4 PAD3 / TCC2 channel 3 |
| ピン 49 | EP — Exposed thermal pad; must be soldered to GND copper pour for thermal dissipation |
主な用途
ATSAMD20G14B-MUT の用途: 6 件s: Low-Power IoT Sensor Nodes, Home Automation Controllers, Smart Metering Endpoints, Consumer HMI Keypads, Industrial Sensor Hubs, Battery-Powered Wearable Devices.
Low-Power IoT Sensor Nodes
The ATSAMD20G14B-MUT's Cortex-M0+ core at 48 MHz and 2 KB SRAM fit wireless sensor nodes running Bluetooth Low Energy controller code or LoRaWAN device drivers. Its 1.62-3.63 V supply range accepts a single CR2032 coin cell or a 3.3 V regulated rail directly, and the 6 SERCOM modules handle SPI sensors, I2C peripherals, and UART debug links without external glue logic.
おすすめ
Home Automation Controllers
The ATSAMD20G14B-MUT drives home-automation controllers that aggregate sensors and switches onto protocols such as Zigbee, Z-Wave, or proprietary 2.4 GHz radios. The 12-bit ADC captures potentiometer positions and analog light sensors, the 10-bit DAC generates bias voltages or audio cues, and the event system offloads timing-critical toggles from the CPU. The 48-pin QFN (7x7 mm) keeps PCB area below 1 square centimeter for in-wall mounting.
おすすめ
Smart Metering Endpoints
The ATSAMD20G14B-MUT's 12-bit ADC and event system make it suitable for electricity, water, and gas metering endpoints that sample pulse outputs or analog transducers at low duty cycles. The Cortex-M0+ core executes metering math in standby between samples while consuming under 5 µA typical in deep-sleep retention mode, extending battery life across the meter's 10-15 year service target.
おすすめ
Consumer HMI Keypads
The ATSAMD20G14B-MUT drives capacitive-touch keypads and small OLED-display interfaces in consumer HMI panels. The six SERCOM instances manage SPI displays, I2C touch controllers, and UART links to host processors. The TCC (Timer/Counter for Control) blocks generate precise PWM for LED backlight dimming curves and haptic feedback motors without CPU intervention.
おすすめ
Industrial Sensor Hubs
The ATSAMD20G14B-MUT operates as a low-cost industrial sensor hub that aggregates 4-20 mA loops, RTDs, and digital inputs over Modbus RTU. The 16 KB Flash fits the Modbus stack plus user configuration profiles, while the 2 KB SRAM buffers incoming serial frames before forwarding to a higher-level controller. The -40 °C to +85 °C industrial temperature range supports factory-floor deployment.
おすすめ
Battery-Powered Wearable Devices
The ATSAMD20G14B-MUT's Cortex-M0+ low-power modes and wide 1.62-3.63 V supply support wearable fitness bands and medical patches powered by small Li-ion or coin cells. The 12-bit ADC reads heart-rate photoplethysmography (PPG) signals, the DAC generates reference voltages for sensor biasing, and the event system wakes the CPU only on button presses or sensor threshold crossings to extend battery life.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: ATSAMD20G14B-MUT — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | ATSAMD20G14B-MU | ATSAMD20G14A-MU | ATSAMD20G14A-MNT | ATSAMD20G14A-MN |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 48-QFN (7x7 mm) | 48-QFN (7x7 mm) - same | 48-QFN (7x7 mm) - same | 48-QFN (7x7 mm) - same | 48-QFN (7x7 mm) - same |
| Silicon Revision | B | B | A (older) | A (older) | A (older) |
| Core | ARM Cortex-M0+ 32-bit | ARM Cortex-M0+ 32-bit | ARM Cortex-M0+ 32-bit | ARM Cortex-M0+ 32-bit | ARM Cortex-M0+ 32-bit |
| Maximum CPU Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Flash Memory | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| SRAM | 2 KB | 2 KB | 2 KB | 2 KB | 2 KB |
| Reel / Packaging Format | 13-inch Tape & Reel (3000 pcs) | 7-inch Tape & Reel (1500 pcs) / Tray | 7-inch Tape & Reel (1500 pcs) | Tape & Reel | 7-inch Tape & Reel (1500 pcs) |
主な差別化要因
- B-revision silicon with improved ADC calibration and lower power-down current （vs ATSAMD20G14A-MU)
- 13-inch reel format optimized for high-volume production （vs ATSAMD20G14B-MU)
- Wide 1.62 V to 3.63 V supply range with single-cell battery support （vs STM32F030F4P6 (cross-brand reference))
設計ノート
Place a 1 µF X7R ceramic bypass capacitor within 5 mm of each VDDIO pin pair and a 100 nF high-frequency decoupling capacitor directly on the analog AVDD rail to preserve ADC SNR. The SAM D20 internal 1.2 V regulator driving VDDCORE requires a 1 µF X7R cap on the regulator output (pin VDDCORE) for stability. Avoid running digital traces under the analog section to minimize switching noise coupling into ADC samples.
Keep SWD clock and SWDIO traces length-matched (within 5 mm) and surrounded by a GND ground-guard trace to avoid debugger errors when programming at 48 MHz. The 48-pin QFN (7x7 mm) exposed thermal pad (EP) must be soldered to a GND copper pour with at least 6 thermal vias to the inner GND plane to meet thermal and electrical grounding requirements per the SAM D20 datasheet.
Do not leave unused SERCOM pins floating if the SERCOM module is disabled in software - configure them as GPIO outputs driven low to avoid current leakage. Avoid using PA24/PA25 as GPIO when the USB peripheral is enabled, as this causes contention on the internal USB pull-up. When migrating from SAM D20G14A to SAM D20G14B, verify errata fixes do not affect your code; the B revision fixes several ADC and TC timing issues.
Route the 32.768 kHz crystal traces between XIN32 and XOUT32 (PA14 and PA15) as short and symmetric as possible, with a GND guard on either side to prevent noise coupling. The crystal load capacitors should be placed close to the MCU pins and matched within 1 pF to maintain oscillator startup margin. Use a crystal with ESR below 50 kΩ and load capacitance between 6-12 pF for reliable operation across the -40 °C to +85 °C industrial temperature range.
コンプライアンス情報
RoHS and lead-free per Microchip product page. Not AEC-Q100 qualified - this is an industrial-grade MCU; choose automotive-grade SAM DA1 or SAM C20 variants for vehicle applications. Halogen-free per Microchip green-compliance labeling.