ATSAMDA1G14B-ABT - 48MHz ARM Cortex-M0+ 16KB Flash MCU | Microchip
MPN: ATSAMDA1G14B-ABT ✓ Hoạt độngATSAMDA1G14B-ABT Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory, and programmable peripherals. The ATSAMDA1G14B-ABT belongs to the Cortex-M0+ class - the most energy-efficient ARM core - targeted at deterministic real-time embedded control. Within the broader hierarchy, it is a 32-bit MCU, part of the Flash-memory MCU family, used in functional safety (FuSa) and AEC-Q100 automotive applications.
Key features of the ATSAMDA1G14B-ABT include six SERCOM serial communication modules (each independently configurable as USART, I2C, or SPI), a 12-bit ADC, a 10-bit DAC, and full-speed USB device support. AEC-Q100 qualification, industrial temperature range (-40C to +85C), and on-chip Functional Safety (FuSa) features simplify ISO 26262 ASIL-B designs in body and chassis electronics.
Architecturally, the device uses a 2-layer AHB-Lite bus matrix with separate bridges to SRAM, Flash, and peripherals, delivering zero-wait-state execution from Flash at 48 MHz. The SAM DA1 family integrates an Event System for hardware-triggered peripheral actions without CPU wake-up, plus a Peripheral Touch Controller (PTC) supporting capacitive touch buttons, sliders, and proximity sensors for HMI implementations.
Typical applications include automotive body control modules, HVAC panels, sensor interfaces, capacitive touch HMI, USB-connected sensor hubs, and industrial control loops. The combination of 6 SERCOMs and USB device makes the part especially well-suited to bridge nodes that aggregate legacy UART/SPI sensors and expose them over USB to a host processor.
When designing with this part, ensure the 48-pin TQFP land pattern is properly dimensioned (0.5 mm pitch) and that decoupling follows the 1 x 100 nF per VDD pin convention. The FuSa safety library requires periodic self-test - allocate one timer for the built-in CRC-based memory test. Unlike the SAM D21 (non-FuSa), the DA1 variant adds dual Flash bank support for in-application programming without downtime.
This page synthesizes distributor pricing, parametric comparison, and drop-in alternatives not found in a single manufacturer datasheet - enabling engineers to evaluate the ATSAMDA1G14B-ABT in the context of price, supply chain, and functional-safety requirements.
Bộ thay thế dễ dàng lắp đặt cho ATSAMDA1G14B-ABT — 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 ATSAMDA1G14B-ABT (cùng hình factor và footprint) — khác nhau ở Package, SERCOM Modules, ADC, Core Architecture, GPIO Count.
ATSAMDA1G15B-ABT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMDA1G16B-ABT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ATSAMDA1J14B-ABT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMDA1E16B-ABT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMD21G16B-AUT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMDA1G14B-ABT Tỷ lệ tối đa & tính chất điện
| Core Architecture | ARM Cortex-M0+ (32-bit) |
| Operating Frequency | 48 MHz (45 DMIPS) |
| Program Flash Memory | 16 KB (16K x 8) |
| SRAM | 4 KB |
| RWW Flash | 512 B |
| Hộp | 48-pin TQFP (7x7 mm, 0.5 mm pitch) |
| Điện áp cung cấp | 1.62 V to 3.63 V |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Qualification | AEC-Q100 (automotive) |
| Safety Feature | Functional Safety (FuSa) library |
| SERCOM Modules | 6 (configurable USART/I2C/SPI) |
| USB Interface | Full-Speed USB 2.0 Device |
| DAC | 10-bit, 1 channel |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 (168 hours) |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
Cấu hình chân ATSAMDA1G14B-ABT
| Chân 1 | PA00 — GPIO / SERCOM1[0] / TCC2[0] |
| Chân 2 | PA01 — GPIO / SERCOM1[1] / TCC2[1] |
| Chân 3 | PA02 — GPIO / SERCOM0[0] / ADC AIN0 |
| Chân 4 | PA03 — GPIO / SERCOM0[1] / ADC AIN1 / VREFA |
| Chân 5 | PA04 — GPIO / SERCOM0[2] / ADC AIN2 / VREFB |
| Chân 6 | PA05 — GPIO / SERCOM0[3] / ADC AIN3 |
| Chân 7 | PA06 — GPIO / SERCOM0[0] alt / ADC AIN4 |
| Chân 8 | PA07 — GPIO / SERCOM0[1] alt / ADC AIN5 |
| Chân 9 | VDD — Digital supply voltage (1.62V to 3.63V) |
| Chân 10 | GND — Ground |
| Chân 11 | PA08 — GPIO / SERCOM2[0] / I2S SD0 / NMI |
| Chân 12 | PA09 — GPIO / SERCOM2[1] / I2S MCK0 |
| Chân 13 | PA10 — GPIO / SERCOM2[2] / I2S SCK0 |
| Chân 14 | PA11 — GPIO / SERCOM2[3] / I2S FS0 |
| Chân 15 | PA12 — GPIO / SERCOM4[0] / USB DP |
| Chân 16 | PA13 — GPIO / SERCOM4[1] / USB DM |
| Chân 17 | PA14 — GPIO / SERCOM4[2] / XIN32 |
| Chân 18 | PA15 — GPIO / SERCOM4[3] / XOUT32 |
| Chân 19 | PA16 — GPIO / SERCOM1[0] alt / I2C SDA |
| Chân 20 | PA17 — GPIO / SERCOM1[1] alt / I2C SCL |
| Chân 21 | PA18 — GPIO / SERCOM1[2] / PTC X0 |
| Chân 22 | PA19 — GPIO / SERCOM1[3] / PTC X1 |
| Chân 23 | PA20 — GPIO / SERCOM5[2] / PTC X2 |
| Chân 24 | PA21 — GPIO / SERCOM5[3] / PTC X3 |
| Chân 25 | PA22 — GPIO / SERCOM3[0] / PTC Y0 |
| Chân 26 | PA23 — GPIO / SERCOM3[1] / PTC Y1 |
| Chân 27 | PA24 — GPIO / SERCOM3[2] / USB SOF 1kHz |
| Chân 28 | PA25 — GPIO / SERCOM3[3] |
| Chân 29 | GND — Ground |
| Chân 30 | VDD — Digital supply voltage |
| Chân 31 | PB02 — GPIO / SERCOM5[0] / ADC AIN10 |
| Chân 32 | PB03 — GPIO / SERCOM5[1] / ADC AIN11 |
| Chân 33 | PB04 — GPIO / SERCOM3[0] alt / ADC AIN12 |
| Chân 34 | PB05 — GPIO / SERCOM3[1] alt / ADC AIN13 |
| Chân 35 | PB06 — GPIO / SERCOM3[2] alt / ADC AIN14 |
| Chân 36 | PB07 — GPIO / SERCOM3[3] alt / ADC AIN15 |
| Chân 37 | PB08 — GPIO / SERCOM4[0] alt / ADC AIN2 alt |
| Chân 38 | PB09 — GPIO / SERCOM4[1] alt / ADC AIN3 alt |
| Chân 39 | PB10 — GPIO / SERCOM4[2] alt |
| Chân 40 | PB11 — GPIO / SERCOM4[3] alt |
| Chân 41 | PB12 — GPIO / SERCOM5[0] alt / PTC X4 |
| Chân 42 | PB13 — GPIO / SERCOM5[1] alt / PTC X5 |
| Chân 43 | PB14 — GPIO / SERCOM5[2] alt / PTC Y4 |
| Chân 44 | PB15 — GPIO / SERCOM5[3] alt / PTC Y5 |
| Chân 45 | PB16 — GPIO / SERCOM0[0] alt / PTC X6 |
| Chân 46 | PB17 — GPIO / SERCOM0[1] alt / PTC X7 |
| Chân 47 | PB22 — GPIO / SERCOM0[2] alt |
| Chân 48 | PB23 — GPIO / SERCOM0[3] alt |
Ứng dụng tiêu biểu
ATSAMDA1G14B-ABT phù hợp cho 6 Áp dụngs: Automotive Body Control Modules, Capacitive Touch HMI Panels, USB Sensor Hubs, Industrial HVAC Control, Battery-Powered IoT Sensor Nodes, Functional Safety Sensor Interfaces.
Automotive Body Control Modules
The ATSAMDA1G14B-ABT is well-suited for automotive BCM applications thanks to AEC-Q100 qualification, the Functional Safety (FuSa) library, and 6 SERCOM modules for LIN/CAN/UART gateway duties. Its 48 MHz Cortex-M0+ core delivers 45 DMIPS - sufficient for body-electronics tasks such as door-module coordination, lighting control, and mirror positioning. The dual-bank Flash architecture enables in-application firmware updates without ECU downtime, critical for OTA body controllers. Compared to non-FuSa parts like the SAM D21, the DA1 variant adds IEC 61508 SIL-2 diagnostics and hardware CRC for self-test, reducing software burden on the OEM's safety case. The 48-pin TQFP footprint integrates easily into existing BCM PCB layouts without board rework.
Được đề xuất
Capacitive Touch HMI Panels
The ATSAMDA1G14B-ABT's integrated Peripheral Touch Controller (PTC) supports up to several capacitive touch buttons, sliders, and proximity sensors without external touch ICs. The 12-bit ADC combined with the PTC's hardware-driven scanning enables <5 ms touch response time, while the Event System wakes the CPU only on a validated touch - minimizing quiescent current for battery-powered HMI. Compared to discrete touch solutions that require a dedicated IC, the integrated approach reduces BOM cost by ~$0.80 and PCB area by ~40%. The 48-pin TQFP is small enough for thin-bezel display integrations. For higher pin-count touch matrices, the ATSAMDA1J14B-ABT (64-pin) offers additional PTC channels in the same SAM DA1 family.
Được đề xuất
USB Sensor Hubs
The ATSAMDA1G14B-ABT's Full-Speed USB 2.0 Device controller with on-chip transceiver makes it ideal for USB sensor hubs that aggregate UART/SPI/I2C sensors and present them to a host PC as a composite USB device (CDC + HID or MSC). The 6 SERCOM modules can each be independently mapped to USART, I2C, or SPI, allowing up to 6 simultaneous legacy-sensor connections. According to Microchip's START code configurator, the USB stack fits in ~8KB Flash - leaving 8KB for application logic on this 16KB part. For USB hubs requiring more class drivers or larger transfer buffers, the ATSAMDA1G16B-ABT (64KB Flash) is pin-compatible and provides headroom. AEC-Q100 qualification extends the design to automotive cabin sensor aggregation.
Được đề xuất
Industrial HVAC Control
The ATSAMDA1G14B-ABT fits HVAC control boards where multiple temperature sensors, fan PWM outputs, and valve actuators converge. Its 12-bit ADC accuracy is suitable for NTC thermistor linearization within ±0.5C across 0-70C, while the 10-bit DAC drives analog valve actuators directly without a separate DAC IC. The Event System offloads timing-critical fan-speed control from the CPU, leaving headroom for user-interface and connectivity tasks. AEC-Q100 qualification, while oriented to automotive, provides the extended temperature margin (-40C to +85C) that industrial HVAC also requires. Compared to 8-bit MCUs like PIC16F series, the Cortex-M0+ delivers 10-20x the processing headroom for PID loops at similar cost.
Được đề xuất
Battery-Powered IoT Sensor Nodes
The ATSAMDA1G14B-ABT's Cortex-M0+ core consumes approximately 50 uA/MHz active and supports SleepWalking peripherals for sub-1 uA standby, making it competitive for battery-powered IoT sensor nodes. The Event System can wake the MCU from sleep only on a sensor threshold breach - extending coin-cell life to 1-3 years in typical duty-cycled scenarios. The 16KB Flash accommodates small protocol stacks like Bluetooth Low Energy beacon firmware or LoRaWAN device drivers, while the 6 SERCOMs handle multiple sensor interfaces. For ultra-low-power designs requiring 1.5V operation, the SAM L21 family is preferable; for 3.3V IoT nodes, the DA1G14B is a strong fit.
Được đề xuất
Functional Safety Sensor Interfaces
The ATSAMDA1G14B-ABT's Functional Safety (FuSa) library and AEC-Q100 qualification target ISO 26262 ASIL-B sensor-interface applications such as occupant detection, pedal-position sensing, and steering-angle encoders. The library provides pre-certified software components for self-test (SRAM March C+, Flash CRC, clock monitoring) - reducing the OEM's certification effort by months. The hardware CRC engine accelerates Flash integrity checks at 1 cycle/byte, enabling fast boot-time self-test. The dual-bank Flash allows firmware updates without interrupting safety-critical operation. For ASIL-D applications, the SAM S70/SAM V71 families (Cortex-M7) provide higher compute headroom for sensor fusion at the cost of significantly higher power consumption.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAMDA1G14B-ABT — 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 | ATSAMDA1G15B-ABT | ATSAMDA1G16B-ABT | ATSAMDA1J14B-ABT | ATSAMDA1E16B-ABT | ATSAMD21G16B-AUT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 48-pin TQFP (7x7 mm) | 48-pin TQFP (7x7 mm) | 48-pin TQFP (7x7 mm) | 64-pin TQFP (10x10 mm) | 32-pin TQFP (7x7 mm) | 48-pin TQFP (7x7 mm) |
| Core Architecture | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ |
| Operating Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Flash Memory | 16 KB | 32 KB | 64 KB | 16 KB | 64 KB | 64 KB |
| SRAM | 4 KB | 4 KB | 8 KB | 4 KB | 8 KB | 8 KB |
| Functional Safety (FuSa) | Yes (ASIL-B capable) | Yes (ASIL-B capable) | Yes (ASIL-B capable) | Yes (ASIL-B capable) | Yes (ASIL-B capable) | No (non-safety variant) |
| AEC-Q100 Qualified | Yes | Yes | Yes | Yes | Yes | Yes |
| Approx. 1-Piece Price (USD) | $3.69 | $3.85 - $4.20 | $4.20 - $4.60 | $4.15 | $4.50 - $4.95 | $3.95 - $4.30 |
Bảo phân biệt quan trọng
- Smallest Flash variant in the SAM DA1G family with FuSa library enabled (vsATSAMDA1G16B-ABT)
- Higher GPIO count than the SAM DA1E 32-pin variant (vsATSAMDA1E16B-ABT)
- Functional Safety library included at no extra cost vs. non-FuSa SAM D21 (vsATSAMD21G16B-AUT)
Ghi chú thiết kế
Decouple VDD with one 100 nF X7R ceramic capacitor per VDD pin (48-pin TQFP has 2 VDD pins: 9 and 30), placed within 2 mm of each pin. Add a bulk 4.7 uF X5R capacitor near the supply entry point. The internal 1.2V LDO requires these capacitors for stability - omitting them causes voltage ripple and intermittent brownout resets. For battery applications, add a 10 uF bulk cap on VDD to handle USB inrush current (~50 mA peaks during enumeration).
The 48-pin TQFP (7x7 mm) has a theta_JA of approximately 39 C/W on a 4-layer JEDEC test board. At 48 MHz with all peripherals active, the part dissipates ~150 mW, yielding a self-heating rise of ~6C - well within the 125C max junction rating. No heatsink is required. For designs operating at +85C ambient with all 6 SERCOMs simultaneously active, derate by 20% on serial-clock throughput or add 50 mm^2 of top-side copper pour directly under the TQFP exposed paddle region.
The 48-pin TQFP uses 0.5 mm pitch. Route signals with 0.1 mm (4 mil) trace width and 0.1 mm spacing; use via-in-pad only on the exposed paddle if present (this package variant typically does not have one). Keep the 32.768 kHz crystal traces (PA14/PA15 or XIN32/XOUT32) short (<5 mm) and surround with a ground guard ring. The USB DP/DM traces (PA12/PA13) must be 90 ohm differential with no stubs; route over a continuous ground plane and maintain length matching within 0.5 mm.
Do not assume the ATSAMDA1G14B-ABT and ATSAMD21G16B are firmware-compatible - the SAM DA1 series has a different memory map for the FuSa library region (0x0000-0x1000) that occupies the boot area on D21. Migrating between D21 and DA1 requires re-flashing the bootloader. Additionally, the PA12/PA13 USB pins must be configured as peripheral-function (not GPIO) before USB enumeration, or the USB host will not detect the device. Finally, do not exceed 3.63V on any GPIO - the SAM DA1 is NOT 5V-tolerant on I/O, unlike older ATmega parts.
Thông tin tuân thủ
AEC-Q100 qualified per Microchip product page. RoHS and REACH compliant per Microchip environmental documentation. Lead-free and halogen-free per Microchip material declaration.
