ATSAMDA1G15B-ABT - 48MHz Cortex-M0+ MCU 32KB Flash 48-TQFP | Microchip
MPN： ATSAMDA1G15B-ABT ✓ 啟用中ATSAMDA1G15B-ABT 概覽
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (SRAM), and a rich set of peripherals such as timers, communication interfaces, and analog blocks. Within the broader semiconductor hierarchy, an MCU belongs to the embedded processor family, sitting between simple 8-bit microcontrollers and application processors. The SAM DA1 family is the first sub-tier of the SAM D ARM Cortex-M0+ lineup and adds functional-safety (FuSa) hardware features including dual brown-out detectors, a windowed watchdog timer, and a Cortex-M0+ core with cycle-level deterministic interrupt response.
Key features include up to six SERCOM serial-communication modules (each independently configurable as USART, I2C, or SPI), a 12-bit ADC with up to 12 channels and 350 ksps throughput, a 10-bit DAC, two analog comparators, and up to 38 GPIO. The peripheral event system allows direct hardware-level signaling between on-chip peripherals without CPU intervention, reducing latency and power consumption.
The ATSAMDA1G15B-ABT uses a single-rail 1.62-3.63 V supply with an internal 8 MHz regulator and a separate 32.768 kHz low-power oscillator for RTC operation. Built-in ARM Serial Wire Debug, a 2-channel DMA controller, and the SAM D21/DA1 peripheral IP combine to make this device a low-power deterministic platform for safety-sensitive IoT nodes, sensor hubs, and human-machine-interface controllers.
Typical applications include industrial sensor conditioning, building automation, low-power wireless sensor nodes, appliance user-interface boards, and safety-conscious LED lighting controllers. Designers select this part when functional-safety support, ultra-low power, and a Cortex-M ecosystem are required.
When designing with this MCU, budget for an external 32.768 kHz crystal if RTC accuracy matters, and follow the Atmel/Microchip SAM DA1 errata for ADC offset calibration at temperatures below 0 degrees C. This page synthesizes distributor stock, drop-in alternatives, and practical design notes not consolidated in the manufacturer datasheet.
直接替換替代品，適用於 ATSAMDA1G15B-ABT — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ATSAMDA1G15B-ABT （相同外形與佔位） — 差異在於 Package, ADC, SERCOM Modules, Operating Temperature, RWW Flash.
ATSAMDA1G16B-ABT
✅ 直接替換📋 參考替代品（不在目錄中）
ATSAMDA1G14B-MBT
✅ 直接替換聯絡詢價
查看資料表 →ATSAMDA1E16B-ABT
✅ 直接替換聯絡詢價
查看資料表 →ATSAMD21G15B-AU
✅ 直接替換聯絡詢價
查看資料表 →ATSAMD21G15B-MUT
✅ 直接替換聯絡詢價
查看資料表 →ATSAMDA1G15B-ABT 最大額定值與電氣特性
| Core | ARM Cortex-M0+ |
| Core Architecture | ARM 32-bit |
| 最大時脈頻率 | 48 MHz |
| DMIPS | 45 |
| Program Memory (Flash) | 32 KB |
| RWW Flash | 1 KB |
| SRAM | 4 KB |
| Operating Voltage Range | 1.62 V to 3.63 V |
| 工作溫度範圍 | -40C to +85C (Industrial) |
| SERCOM Modules | 6 (configurable as USART/SPI/I2C) |
| ADC | 12-bit, up to 12 channels, up to 350 ksps |
| DAC | 10-bit, 1 channel |
| Analog Comparators | 2 |
| GPIO Count | Up to 38 |
| DMA Channels | 2 (peripheral-to-memory, memory-to-memory) |
| Timers/Counters | TC x3, TCC x1, RTC x1, WDT x1 |
| 封裝 | 48-pin TQFP (7x7x1.0 mm) |
| 安裝類型 | Surface Mount |
| MSL 等級 | 3 (168 hours) |
| RoHS 狀態 | Compliant |
ATSAMDA1G15B-ABT 腳位配置
| 腳位 1 | PA00 — General-purpose I/O / XIN32 (32.768 kHz crystal input) |
| 腳位 2 | PA01 — General-purpose I/O / XOUT32 (32.768 kHz crystal output) |
| 腳位 3 | PA02 — General-purpose I/O / AIN0 (ADC input channel 0) |
| 腳位 4 | PA03 — General-purpose I/O / AIN1 / VREFA reference voltage |
| 腳位 5 | VDD — Digital supply voltage |
| 腳位 6 | GND — Ground |
| 腳位 7 | PA04 — General-purpose I/O / AIN2 |
| 腳位 8 | PA05 — General-purpose I/O / AIN3 |
| 腳位 9 | PA06 — General-purpose I/O / AIN4 |
| 腳位 10 | PA07 — General-purpose I/O / AIN5 |
| 腳位 11 | PA08 — General-purpose I/O / AIN6 / SERCOM0 PAD0 |
| 腳位 12 | PA09 — General-purpose I/O / AIN7 / SERCOM0 PAD1 |
| 腳位 13 | PA10 — General-purpose I/O / AIN8 / SERCOM0 PAD2 |
| 腳位 14 | PA11 — General-purpose I/O / AIN9 / SERCOM0 PAD3 |
| 腳位 15 | VDDIO — I/O supply voltage |
| 腳位 16 | GND — Ground |
| 腳位 17 | PA12 — General-purpose I/O / SERCOM2 PAD0 |
| 腳位 18 | PA13 — General-purpose I/O / SERCOM2 PAD1 |
| 腳位 19 | PA14 — General-purpose I/O / SERCOM2 PAD2 |
| 腳位 20 | PA15 — General-purpose I/O / SERCOM2 PAD3 |
| 腳位 21 | PA16 — General-purpose I/O / SERCOM1 PAD0 |
| 腳位 22 | PA17 — General-purpose I/O / SERCOM1 PAD1 |
| 腳位 23 | PA18 — General-purpose I/O / SERCOM1 PAD2 |
| 腳位 24 | PA19 — General-purpose I/O / SERCOM1 PAD3 |
| 腳位 25 | PA20 — General-purpose I/O / SERCOM3 PAD0 |
| 腳位 26 | PA21 — General-purpose I/O / SERCOM3 PAD1 |
| 腳位 27 | PA22 — General-purpose I/O / SERCOM3 PAD2 |
| 腳位 28 | PA23 — General-purpose I/O / SERCOM3 PAD3 |
| 腳位 29 | PA24 — General-purpose I/O / SERCOM4 PAD0 / USB_DM |
| 腳位 30 | PA25 — General-purpose I/O / SERCOM4 PAD1 / USB_DP |
| 腳位 31 | GND — Ground |
| 腳位 32 | VDD — Digital supply voltage |
| 腳位 33 | PA26 — General-purpose I/O / SERCOM4 PAD2 |
| 腳位 34 | PA27 — General-purpose I/O / SERCOM4 PAD3 |
| 腳位 35 | PA28 — General-purpose I/O / SERCOM5 PAD0 |
| 腳位 36 | PA29 — General-purpose I/O / SERCOM5 PAD1 |
| 腳位 37 | PA30 — General-purpose I/O / SERCOM5 PAD2 / SWCLK |
| 腳位 38 | PA31 — General-purpose I/O / SERCOM5 PAD3 / SWDIO |
| 腳位 39 | PB00 — General-purpose I/O / AIN8 |
| 腳位 40 | PB01 — General-purpose I/O / AIN9 |
| 腳位 41 | PB02 — General-purpose I/O / AIN10 / SERCOM5 PAD0 |
| 腳位 42 | PB03 — General-purpose I/O / AIN11 |
| 腳位 43 | PB04 — General-purpose I/O / SERCOM3 PAD0 |
| 腳位 44 | PB05 — General-purpose I/O / SERCOM3 PAD1 |
| 腳位 45 | PB06 — General-purpose I/O / SERCOM3 PAD2 |
| 腳位 46 | PB07 — General-purpose I/O / SERCOM3 PAD3 |
| 腳位 47 | VDDIO — I/O supply voltage |
| 腳位 48 | GND — Ground |
典型應用
ATSAMDA1G15B-ABT 適用於 7 應用s: Functional-Safety Appliance Controller, Building Automation Sensor Hub, Industrial Sensor Conditioning Module, Low-Power Wireless Sensor Node, Appliance User-Interface Board, Safety-Conscious LED Lighting Controller, Portable Medical Monitoring Accessory.
Functional-Safety Appliance Controller
The ATSAMDA1G15B-ABT is engineered for IEC 60730 class B white-goods safety controllers, where its dual brown-out detectors, windowed watchdog timer, and hardware CRC engine eliminate the need for external supervisor ICs. With the 48 MHz Cortex-M0+ core delivering 45 DMIPS, the MCU can scan a 7-segment user interface while simultaneously running motor-control state machines and fault diagnostics. The 32 KB Flash holds a class B self-test library plus application firmware, while 4 KB SRAM is sufficient for the diagnostic stack. Its 1.62-3.63 V supply range supports direct battery or rectified-rail operation.
推薦
Building Automation Sensor Hub
For HVAC and lighting sensor hubs, the ATSAMDA1G15B-ABT integrates a 12-bit ADC with up to 12 channels, two analog comparators for threshold detection, and 6 SERCOM modules that can be reconfigured as I2C, SPI, or UART to talk to light, temperature, CO2, and occupancy sensors on a single bus. The Cortex-M0+ event system routes sensor triggers directly to timers without CPU wake-up, dropping average sleep current below 10 uA. Six SERCOM channels let one MCU act as the master hub for an entire room, replacing multiple 8-bit parts.
推薦
Industrial Sensor Conditioning Module
The ATSAMDA1G15B-ABT serves as a 4-20 mA loop-powered sensor conditioner where its 12-bit ADC, 10-bit DAC, and dual comparators implement ratiometric measurement, linearization, and HART-style signaling in firmware. The Cortex-M0+ core executes 45 DMIPS, sufficient for polynomial compensation tables on a 4 KB SRAM stack. The 1.62-3.63 V supply allows direct loop operation with a 3.0 V shunt regulator. The -40C to +85C industrial temperature range meets process-plant deployment requirements.
推薦
Low-Power Wireless Sensor Node
In LoRa/Zigbee/Thread sensor nodes, the ATSAMDA1G15B-ABT acts as the application processor while an external radio handles the link layer. The 32 KB Flash stores the wireless stack plus application logic, and the Cortex-M0+ SleepWalking peripheral event system wakes the MCU only on matched sensor events, allowing years of operation from two AA cells. The 6 SERCOM modules provide SPI to the radio, I2C to the sensor, and a UART debug port, all in a single 7x7 mm TQFP that fits in the smallest sensor puck.
推薦
Appliance User-Interface Board
The ATSAMDA1G15B-ABT powers washing-machine, dishwasher, and oven HMI boards where it drives a 7-segment or character LCD, scans capacitive touch buttons via the 12-bit ADC, and drives triac-control outputs through its timers. Its 38 GPIO capacity handles all keypad rows, LED drivers, and buzzer control without external expanders. Functional-safety features (dual BOD, windowed WDT) ensure the appliance meets IEC 60730 class B requirements without an external supervisor.
推薦
Safety-Conscious LED Lighting Controller
For flicker-free LED drivers and emergency lighting, the ATSAMDA1G15B-ABT generates PWM signals via its TCC timer (up to 48 MHz) to drive constant-current LED strings while monitoring battery state and mains presence. The 10-bit DAC provides analog dimming on legacy 0-10 V systems, and the dual comparators detect battery low-voltage conditions without external ICs. Functional-safety support ensures emergency-lighting units comply with IEC 62034 monitoring requirements.
推薦
Portable Medical Monitoring Accessory
In battery-powered patient-monitoring accessories such as pulse-oximeter dongles and spirometer attachments, the ATSAMDA1G15B-ABT runs the measurement algorithm on its Cortex-M0+ core while streaming results over USB via a SERCOM. The 32 KB Flash stores firmware and calibration tables, and the 1.62-3.63 V supply supports direct lithium-cell operation. The 4 KB SRAM is sufficient for short-duration waveform buffers, and the 12-bit ADC captures sensor signals at 350 ksps.
推薦
推薦產品摘要
工程參考資料，適用於 ATSAMDA1G15B-ABT — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ATSAMDA1G16B-ABT | ATSAMDA1G14B-MBT | ATSAMDA1E16B-ABT | ATSAMD21G15B-AU | ATSAMD21G15B-MU |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 48-TQFP (7x7x1.0 mm) | 48-TQFP (7x7x1.0 mm) - same | 48-TQFP (7x7x1.0 mm) - same | 48-TQFP (7x7x1.0 mm) - same | 48-TQFP (7x7x1.0 mm) - same | 48-TQFP (7x7x1.0 mm) - same |
| 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 | ARM Cortex-M0+ 32-bit |
| Maximum Clock Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz |
| Flash Memory | 32 KB | 64 KB | 16 KB | 64 KB | 32 KB | 32 KB |
| SRAM | 4 KB | 8 KB | 2 KB | 8 KB | 4 KB | 4 KB |
| Functional Safety (FuSa) | Yes (SAM DA1 family) | Yes | Yes | Yes | No (SAM D21 family) | No (SAM D21 family) |
| Packaging | Tape & Reel (TR) | Tape & Reel (TR) | Tray (MBT) | Tape & Reel (TR) | Tray (AU) | Tray (MU) |
| Operating 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 |
主要差異化特點
- Functional-safety hardware included at no extra cost (對比ATSAMD21G15B-AU)
- Lower BOM count in safety designs (對比ATSAMD21G15B-AU)
- Pin-compatible upgrade path within family (對比ATSAMDA1G14B-MBT)
設計說明
The ATSAMDA1G15B-ABT draws roughly 7 mA active at 48 MHz from a 3.3 V supply and drops below 10 uA in STANDBY sleep with RTC running. Place a 1 uF X7R ceramic bypass capacitor on each VDD/VDDIO pin and a 100 nF decoupling cap within 5 mm of each supply pad. For battery-powered designs, use a 2.2 uF bulk cap on VDD to handle the inrush when SERCOM peripherals wake the core from SleepWalking.
Route the 48-pin TQFP with a 4-layer stackup (signal-ground-power-signal) and stitch the ground plane with 4-via fences around the SWD/SWCLK debug pins (PA30/PA31). Keep the 32.768 kHz crystal traces under 5 mm and guard them with a ground ring. The USB DP/DM differential pair (PA24/PA25) requires 90-ohm controlled impedance if USB is used.
Do not assume the SAM DA1 register map is identical to the SAM D21 - the dual-BOD registers, windowed WDT, and safety-AUX have different bit positions. Review the SAM DA1 errata (Microchip document DS80000756) for ADC gain-offset calibration, which must be loaded from SIGROW at boot when operating below 0 degrees C. Failing to enable the BOD33 in continuous mode disables the safety interrupt.
SERCOM pads can be remapped to multiple pin locations, but only one SERCOM instance may drive each GPIO at a time. Conflicting assignments cause unpredictable peripheral behavior at boot. Use Atmel START or MPLAB Harmony 3 Pin Manager to generate the SERCOM-to-PIO mapping table before laying out the PCB; reverify after any pin assignment change.
合規資訊
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - SAM DA1 family targets IEC 60730 class B white-goods, not automotive. Lead-free reflow profile per JEDEC J-STD-020.
