ATSAMD20J15B-MUT - 48MHz Cortex-M0+ MCU, 32KB Flash | Microchip
MPN: ATSAMD20J15B-MUT ✓ Hoạt độngATSAMD20J15B-MUT Tóm tắt
What is an ARM Cortex-M0+ microcontroller? It is the most energy-efficient member of the ARM Cortex-M processor family, designed for low-cost, low-power embedded applications. The Cortex-M0+ core sits within the broader taxonomy of microcontrollers (MCU) -> embedded processors -> semiconductors. The SAM D20 family is a low-power, high-performance line of M0+ MCUs from Microchip (formerly Atmel), popular for general-purpose embedded designs.
Key features include a 32KB in-system programmable Flash with ECC, 4KB SRAM, an 8-channel Event System for inter-peripheral signalling, a 12-bit 350ksps ADC with up to 20 analog channels, and a full-speed USB 2.0 device interface. The SERCOM (Serial Communication Interface) module provides up to six configurable I2C/SPI/UART interfaces, and the device supports 1.62V to 3.63V core and I/O operation. Six 16-bit Timer/Counters (TC), a 32-bit Real-Time Counter, and a Peripheral Touch Controller (PTC) supporting capacitive touch sensing round out the peripheral complement.
At the architecture level, the SAM D20 uses a single-cycle hardware multiplier, Microchip's proprietary SleepWalking technology for peripheral-level power gating, and an integrated Power Management Unit (PMU) with Buck/LDO modes. This yields Active mode currents of approximately 70 uA/MHz and Sleep modes down to a few microamps, making it competitive with other low-power M0+ MCUs.
Typical applications include home automation, IoT sensor nodes, smart metering, consumer electronics, industrial sensor hubs, and capacitive touch user interfaces. The wide operating voltage range and low-power SleepWalking peripherals make it especially suitable for battery-powered devices.
When designing, note that the 64-pin VQFN-EP (9x9) package requires careful PCB thermal pad soldering for proper operation. Decoupling should include 100nF + bulk capacitance close to each supply pin per Microchip's hardware design guidelines.
Bộ thay thế dễ dàng lắp đặt cho ATSAMD20J15B-MUT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với ATSAMD20J15B-MUT (cùng hình factor và footprint) — khác nhau ở ADC, Package, RoHS Status, DAC, SERCOM Modules.
ATSAMD20J15B-MU
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Xem tài liệu →ATSAMD20J15A-MU
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ATSAMD20J15A-CU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD20J14B-MU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD20G16B-MU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD20E16B-MU
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD20J15B-MUT Tỷ lệ tối đa & tính chất điện
| Core Architecture | ARM Cortex-M0+ (32-bit) |
| Tần số xung maksimum | 48 MHz |
| Program Flash Memory | 32 KB (32K x 8) |
| SRAM | 4 KB |
| Operating Voltage Range | 1.62 V to 3.63 V |
| Khoảng nhiệt độ hoạt động | -40 C to +85 C (Industrial) |
| Package Type | 64-VQFN with Exposed Pad (9x9 mm) |
| ADC | 12-bit, up to 350 ksps |
| SERCOM Modules | Up to 6 (configurable I2C/SPI/UART) |
| USB Interface | USB 2.0 Full-Speed Device |
| Touch Sensing (PTC) | Supported (Peripheral Touch Controller) |
| Event System Channels | 8 |
| Kiểu lắp đặt | Surface Mount (Tape & Reel) |
| Trạng thái RoHS | Compliant (Green / lead-free) |
Cấu hình chân ATSAMD20J15B-MUT
| Chân 1 | PB11 — General-purpose IO / PTC TX line |
| Chân 2 | PB10 — General-purpose IO / PTC TX line |
| Chân 3 | PB09 — General-purpose IO / PTC TX line |
| Chân 4 | PB08 — General-purpose IO / PTC TX line |
| Chân 5 | PA27 — General-purpose IO / I2S SDO |
| Chân 6 | PA28 — General-purpose IO / I2S SDI |
| Chân 7 | VSS — Ground reference |
| Chân 8 | VDDIO — I/O supply voltage input |
| Chân 9 | VDDIN — Voltage regulator input supply |
| Chân 10 | VDDCORE — Decoupling pin for internal core regulator |
| Chân 11 | PA30 — General-purpose IO / SWCLK |
| Chân 12 | PA31 — General-purpose IO / SWDIO |
| Chân 13 | PB22 — General-purpose IO |
| Chân 14 | PB23 — General-purpose IO / SERCOM RX |
| Chân 15 | PA00 — General-purpose IO / XIN |
| Chân 16 | PA01 — General-purpose IO / XOUT |
| Chân 17 | GND — Ground (also analog ground reference) |
| Chân 18 | PA02 — ADC AIN0 input |
| Chân 19 | PA03 — ADC AIN1 input |
| Chân 20 | PA04 — ADC AIN2 / VREF reference |
| Chân 21 | PA05 — ADC AIN3 input |
| Chân 22 | PA06 — ADC AIN4 input |
| Chân 23 | PA07 — ADC AIN5 input |
| Chân 24 | PA08 — ADC AIN6 / SERCOM PAD0 |
| Chân 25 | PA09 — ADC AIN7 / SERCOM PAD1 |
| Chân 26 | PA10 — ADC AIN8 / SERCOM PAD2 |
| Chân 27 | PA11 — ADC AIN9 / SERCOM PAD3 |
| Chân 28 | VSS — Ground |
| Chân 29 | VDDIO — I/O supply |
| Chân 30 | VDDIN — Regulator input supply |
| Chân 31 | PA12 — General-purpose IO / SERCOM PAD0 |
| Chân 32 | PA13 — General-purpose IO / SERCOM PAD1 |
| Chân 33 | PA14 — General-purpose IO / SERCOM PAD2 |
| Chân 34 | PA15 — General-purpose IO / SERCOM PAD3 |
| Chân 35 | PA16 — SERCOM / I2S MCLK |
| Chân 36 | PA17 — SERCOM / I2S FS |
| Chân 37 | PA18 — SERCOM / I2S BCLK |
| Chân 38 | PA19 — SERCOM / I2S SDO |
| Chân 39 | PB10 — General-purpose IO / SERCOM |
| Chân 40 | PB11 — General-purpose IO / SERCOM |
| Chân 41 | PB12 — General-purpose IO / TC |
| Chân 42 | PB13 — General-purpose IO / TC |
| Chân 43 | PB14 — General-purpose IO / TC |
| Chân 44 | PB15 — General-purpose IO / TC |
| Chân 45 | PA20 — USB D- (DM) data line |
| Chân 46 | PA21 — USB D+ (DP) data line |
| Chân 47 | PA22 — General-purpose IO / SERCOM |
| Chân 48 | PA23 — General-purpose IO / SERCOM |
| Chân 49 | PA24 — USB VBUS detect (or general IO) |
| Chân 50 | PA25 — USB ID / general-purpose IO |
| Chân 51 | VSS — Ground |
| Chân 52 | VDDIO — I/O supply |
| Chân 53 | VSS — Ground |
| Chân 54 | VDDIO — I/O supply |
| Chân 55 | PB16 — General-purpose IO / SERCOM |
| Chân 56 | PB17 — General-purpose IO / SERCOM |
| Chân 57 | PB18 — General-purpose IO / TC |
| Chân 58 | PB19 — General-purpose IO / TC |
| Chân 59 | PB20 — General-purpose IO / TC |
| Chân 60 | PB21 — General-purpose IO / TC |
| Chân 61 | PA26 — General-purpose IO / NMI |
| Chân 62 | NRST — Active-low reset input |
| Chân 63 | VSS — Ground |
| Chân 64 | VDDIN — Regulator input supply |
Ứng dụng tiêu biểu
ATSAMD20J15B-MUT phù hợp cho 6 Áp dụngs: Home Automation and IoT Sensor Nodes, Capacitive Touch User Interface, USB HID Devices (Keyboard/Mouse/Gamepad), Smart Metering and Energy Monitoring, Industrial Sensor Hub and Condition Monitoring, Consumer Wearable Electronics.
Home Automation and IoT Sensor Nodes
The ATSAMD20J15B-MUT's Cortex-M0+ core at 48MHz with 32KB Flash is well-suited for wireless sensor nodes in home automation. The 4KB SRAM comfortably holds application code and TLS-DTLS lite stacks when paired with ATWINC1500 or RN4871 modules. Its 1.62V-3.63V operating range allows direct connection to a single CR2032 or two AA cells, and SleepWalking peripherals consume as little as a few microamps between measurements - extending battery life to 1-3 years typical duty cycle.
Được đề xuất
Capacitive Touch User Interface
With its integrated Peripheral Touch Controller (PTC), the ATSAMD20J15B-MUT supports hardware-accelerated capacitive touch sensing through self- and mutual-capacitance modes. The 12-bit ADC and up to 6 SERCOM interfaces handle additional slider/wheel sensing and drive feedback LEDs or haptic actuators. The 32KB Flash comfortably fits Microchip's QTouch library plus custom UI logic for appliances, lighting controls, and small appliances needing 4-12 touch buttons without external touch ICs.
Được đề xuất
USB HID Devices (Keyboard/Mouse/Gamepad)
The on-chip USB 2.0 Full-Speed Device port lets the ATSAMD20J15B-MUT implement HID-class peripherals (keyboards, mice, gamepads, custom input devices) without external transceivers. The Cortex-M0+ at 48MHz is more than adequate for HID report generation at 1000Hz polling, leaving cycles for LED animation, matrix scanning, or wireless-link firmware. The 32KB Flash holds Microchip's USB stack plus HID report descriptors and application logic.
Được đề xuất
Smart Metering and Energy Monitoring
For electricity/water/gas metering, the ATSAMD20J15B-MUT offers a 12-bit ADC with up to 20 analog channels, capable of sampling CT/PT-derived signals at the required metrology rates when paired with an external AFE. Its low-power Sleep modes (down to a few microamps) and wide operating temperature (-40C to +85C) suit outdoor metering installations. The 4KB SRAM is sufficient for time-series buffering before modem transmission, and SERCOM ports drive UART-modulated cellular or LoRa modules.
Được đề xuất
Industrial Sensor Hub and Condition Monitoring
The 8-channel Event System on the ATSAMD20J15B-MUT allows peripherals to signal each other without CPU intervention, ideal for low-latency sensor aggregation in industrial condition-monitoring nodes (vibration, temperature, pressure). Combined with the 12-bit ADC and SERCOM expansion (I2C/SPI sensors), it forms a cost-effective sensor hub that can run anomaly-detection algorithms in 32KB Flash. Industrial temperature grade (-40C to +85C) is rated for factory-floor deployment.
Được đề xuất
Consumer Wearable Electronics
Fitness bands, BLE beacons, and simple wearables benefit from the ATSAMD20J15B-MUT's small package (9x9 mm VQFN), low active current (~70 uA/MHz), and SERCOM-driven BLE link via companion modules. Its 32KB Flash holds Microchip's BLE stack plus heart-rate, step-count, and OLED-display routines. The PTC controller can also drive simple on-device capacitive touch buttons on the wearable chassis without extra hardware.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAMD20J15B-MUT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | ATSAMD20J15B-MU | ATSAMD20J15A-MU | ATSAMD20J15A-CU | ATSAMD20J14B-MU | ATSAMD20G16B-MU | ATSAMD20E16B-MU |
|---|---|---|---|---|---|---|---|
| Package | VQFN-64 (9x9 mm) with EP | VQFN-64 (9x9 mm) with EP | VQFN-64 (9x9 mm) with EP | VQFN-64 (9x9 mm) with EP | VQFN-64 (9x9 mm) with EP | VQFN-64 (9x9 mm) with EP | VQFN-64 (9x9 mm) with EP |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ |
| Maximum Clock Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Flash Memory | 32 KB | 32 KB | 32 KB | 32 KB | 16 KB (-50%) | 64 KB (+100%) | 64 KB (+100%) |
| SRAM | 4 KB | 4 KB | 4 KB | 4 KB | 2 KB (-50%) | 8 KB (+100%) | 8 KB (+100%) |
| Operating Voltage Range | 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 | 1.62 V to 3.63 V |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Silicon Revision | B | B | A | A | B | B | B |
| Packaging Form | Tape & Reel | Tray | Tray | Tray | Tray | Tray | Tray |
Bảo phân biệt quan trọng
- Full-speed USB 2.0 device on-chip (vsATSAMD20J14B-MU)
- Capacitive touch (PTC) controller integrated (vsPIC16F684-I/SL)
- 32-bit Cortex-M0+ core vs 8-bit PIC alternatives (vsPIC16F677-I/SS)
Ghi chú thiết kế
Solder the exposed thermal pad (pin 65/EP) of the ATSAMD20J15B-MUT to a continuous ground copper plane on the top layer. The Microchip hardware design guidelines (TB3070) recommend at least 4 thermal vias (0.3 mm drill) connecting the EP to inner-layer ground planes for proper thermal dissipation. Without proper EP soldering, the device may fail at elevated ambient temperatures due to higher junction-to-ambient thermal resistance.
Place one 100 nF 0402 ceramic decoupling capacitor as close as possible to each VDDIO pin (typically 4 instances on the 64-pin VQFN). Add a single 4.7 uF or 10 uF bulk capacitor at the VDDIN entry point. Per Microchip SAM D20 hardware guidance, VDDIN must be within 1.62V-3.63V; exceeding 3.63V will permanently damage the on-chip regulator.
Do not leave unused SERCOM pins floating if USB or external peripherals share the package footprint. Configure all unused I/O as input with internal pull-up enabled, or output low, in firmware to minimize Sleep-mode current consumption. Also, when migrating from ATSAMD20J15A (revision A) to the ATSAMD20J15B (revision B), review the latest errata document for any peripheral changes affecting your application code.
Thông tin tuân thủ
RoHS compliant per Microchip ATSAMD20J15 product page (Green / lead-free designation). Not AEC-Q100 qualified - automotive applications should consider ATSAMx70 or ATSAME70 automotive-grade families instead.
