ATSAMDA1E15B-MBT - 48MHz Cortex-M0+ MCU 32KB Flash | Microchip
MPN： ATSAMDA1E15B-MBT ✓ 啟用中ATSAMDA1E15B-MBT 概覽
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, volatile and non-volatile memory, programmable I/O, and a set of on-chip peripherals such as timers, ADCs, and communication interfaces. The Cortex-M0+ core is the most energy-efficient member of the ARM Cortex-M family, designed for deterministic, low-power embedded workloads. The SAM DA1 family extends the standard SAMD20/SAMD21 family with hardware functional-safety features, deterministic latency, and BIST support intended to simplify IEC 61508 and ISO 26262 system certification.
Key features include four SERCOM modules configurable as USART, I2C, or SPI, a 12-bit ADC with up to 20 channels, a 10-bit DAC, six 16-bit timers/counters, a 32-bit RTC, and full-speed USB 2.0 device with on-chip transceiver. The device supports 1.62 V to 3.63 V core VDD, low-power Sleep and Standby modes down to a few microamps, and a peripheral event system that lets peripherals trigger one another without CPU intervention.
Architecturally, the ATSAMDA1E15B-MBT uses a 2-layer AHB matrix with separate buses for Flash and SRAM, enabling zero-wait-state code execution at 48 MHz from Flash. The integrated voltage regulator and Power-on Reset reduce external BOM, while the WDT, CRC, and lock-bit features add tamper resistance. The VQFN-5x5 footprint is pin-compatible with other SAM D20/D21/DA1 E-variant 32-pin parts.
Typical applications include automotive body and chassis ECUs, industrial sensor nodes, building-automation controllers, low-power IoT edge devices, and functional-safety sub-systems such as over-current protection or sensor monitoring. The FuSa features make the part especially suitable for safety elements out of context (SEooC) at SIL-2 / ASIL-B levels.
When designing with this device, ensure that the VQFN-5x5 exposed pad is soldered to a sufficiently large copper pour for thermal dissipation. Decouple VDD and VDDCORE with 100 nF and 4.7 µF ceramic capacitors placed within 2 mm of the supply pins, and route the SERCOM lines as impedance-controlled differential pairs when using I2C Fast Mode Plus or SPI at >25 MHz.
This page synthesizes distributor pricing, drop-in alternatives from the same SAM D family, and practical design notes not found in the manufacturer datasheet, giving engineers a single, citable reference for selecting the ATSAMDA1E15B-MBT in functional-safety designs.
直接替換替代品，適用於 ATSAMDA1E15B-MBT — 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： ATSAMDA1E15B-MBT （相同外形與佔位） — 差異在於 ADC, DAC, Package, Operating Temperature, Program Memory (Flash).
ATSAMD21E15B-AU
✅ 直接替換聯絡詢價
查看資料表 →ATSAMD20E15B-AUT
✅ 直接替換聯絡詢價
查看資料表 →ATSAML21E15B-MUT
✅ 直接替換聯絡詢價
查看資料表 →ATSAMDA1E15B-MBT-ND
✅ 直接替換📋 參考替代品（不在目錄中）
ATSAML11D15A-MUT
✅ 直接替換📋 參考替代品（不在目錄中）
ATSAMDA1E15B-MBTVAO
✅ 直接替換📋 參考替代品（不在目錄中）
ATSAMDA1E15B-MBT 最大額定值與電氣特性
| Core Architecture | ARM Cortex-M0+ |
| 最大時脈頻率 | 48 MHz |
| DMIPS | 45 DMIPS |
| Flash Memory | 32 KB (32K x 8) |
| SRAM | 4 KB |
| RWW Flash | 1 KB |
| Operating Voltage (VDD) | 1.62 V to 3.63 V |
| 封裝 | 32-VQFN (5x5 mm) |
| 安裝類型 | Surface Mount |
| 工作溫度 | -40C to +85C (industrial) |
| SERCOM Modules | 4 (configurable as USART/I2C/SPI) |
| ADC | 12-bit, up to 20 channels |
| DAC | 10-bit, 1 channel |
| USB | USB 2.0 Full-Speed Device with on-chip transceiver |
| Timers/Counters | 6 x 16-bit TC, 1 x 32-bit RTC |
| RoHS 狀態 | Compliant |
ATSAMDA1E15B-MBT 32-vqfn (5x5 mm) 腳位配置指南
ATSAMDA1E15B-MBT（32-vqfn (5x5 mm) 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： ATSAMDA1E15B-MBT.
請參閱 資料表 以查看完整腳位配置。
典型應用
ATSAMDA1E15B-MBT 適用於 7 應用s: Automotive Body and Chassis ECUs, Industrial Sensor Nodes, Building Automation Controllers, Low-Power IoT Edge Devices, Functional-Safety Sub-Systems, USB Human-Interface Devices, Motor Control Sub-Systems.
Automotive Body and Chassis ECUs
The ATSAMDA1E15B-MBT's FuSa features (windowed WDT, deterministic event system, lock-bit Flash) and 32-VQFN compact footprint make it ideal for automotive body and chassis ECUs such as door modules, mirror controllers, and lighting nodes. At 48 MHz Cortex-M0+ the MCU handles LIN-based body networks and CAN-FD bridging via the SERCOM peripherals. The 32 KB Flash accommodates typical body ECU application code with 1 KB RWW Flash enabling OTA-style firmware updates without ECU downtime. Per ISO 26262 ASIL-B hardware elements, designers pair the part with an external CAN-FD transceiver for in-vehicle networking.
推薦
Industrial Sensor Nodes
The 12-bit ADC with up to 20 channels, four SERCOM modules, and 48 MHz Cortex-M0+ performance make the ATSAMDA1E15B-MBT well suited for industrial 4-20 mA loop-powered sensor nodes. The part's low-power Standby mode draws a few microamps, enabling multi-year battery life on wireless sensor platforms. Functional-safety features such as BIST and CRC monitoring support IEC 61508 SIL-2 process instrumentation. Typical circuit uses an RTD or strain-gauge front end feeding the ADC, with SERCOM-0 driving an RS-485 transceiver for industrial bus connectivity.
推薦
Building Automation Controllers
For HVAC controllers, smart thermostats, and access-control panels, the ATSAMDA1E15B-MBT provides deterministic peripheral event handling for triac-based load switching and zero-cross detection. The integrated 10-bit DAC drives 0-10 V analog outputs for damper and valve actuators. USB 2.0 Full-Speed device enables Wi-Fi/BLE module commissioning via the on-chip transceiver. The 32-VQFN 5x5 mm footprint fits standard 1U control-panel layouts, and the 1.62 V to 3.63 V supply range supports both 3.3 V and 5 V bus architectures.
推薦
Low-Power IoT Edge Devices
Battery-powered IoT edge devices benefit from the ATSAMDA1E15B-MBT's Sleep and Standby modes that drop current consumption to a few microamps while maintaining RTC operation and Wake-on-GPIO. The 4 SERCOM modules support concurrent SPI sensor, I2C EEPROM, and UART debug interfaces. The 32 KB Flash accommodates typical BLE/Zigbee application stacks with 4 KB SRAM for sensor data buffering. Compared with full Cortex-M4 parts, the Cortex-M0+ core trades DSP performance for significantly lower active current at the same throughput class.
推薦
Functional-Safety Sub-Systems
The ATSAMDA1E15B-MBT's dedicated hardware for IEC 61508 / ISO 26262 functional safety makes it a strong fit for safety sub-systems such as over-current protection, motor-stall detection, and sensor-diagnostic monitoring. Designers run the MCU alongside a primary controller, using the FuSa windowed WDT and CRC to detect out-of-spec conditions. The deterministic peripheral event system guarantees bounded interrupt latency for safety-critical timing. System-level FMEDA, watchdog timing analysis, and software diversity metrics must still be performed at the integrator level.
推薦
USB Human-Interface Devices
The on-chip USB 2.0 Full-Speed device transceiver eliminates the need for an external PHY, allowing the ATSAMDA1E15B-MBT to serve as a compact HID controller for keyboards, pointer devices, custom input panels, and USB-to-UART bridges. The 32 KB Flash holds HID class drivers and customization firmware, while 4 KB SRAM is sufficient for descriptor buffering and report queues. The 48 MHz clock rate ensures 1 ms polling deadlines are met without CPU loading, and SERCOM-3 can be repurposed as a debug UART when USB is not in use.
推薦
Motor Control Sub-Systems
For small BLDC or stepper motor control sub-systems, the ATSAMDA1E15B-MBT provides 6 16-bit timers for PWM generation and quadrature decoding. The Cortex-M0+ at 48 MHz executes field-oriented control (FOC) loops at modest speeds sufficient for fans, pumps, and small appliances. The 32-VQFN 5x5 mm footprint fits compact motor-driver daughterboards, and the deterministic event system ensures precise commutation timing. Designers pair the MCU with external gate drivers such as the MCP8024 for three-phase half-bridge control.
推薦
推薦產品摘要
工程參考資料，適用於 ATSAMDA1E15B-MBT — 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 | ATSAMD21E15B-AU | ATSAMD20E15B-AU | ATSAML21E15B-MUT | ATSAMDA1E15B-MBTVAO |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | VQFN-32 (5x5 mm) | TQFP-32 | TQFP-32 | VQFN-32 | VQFN-32 - same |
| Core Architecture | 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 |
| Flash Memory | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| SRAM | 4 KB | 4 KB | 4 KB | 4 KB | 4 KB |
| USB | USB 2.0 FS Device with on-chip PHY | USB 2.0 FS Device | No USB | No USB | USB 2.0 FS Device |
| Functional Safety (FuSa) | Yes (IEC 61508 SIL-2 / ISO 26262 ASIL-B) | No | No | No | Yes (with AEC-Q100) |
| 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 |
主要差異化特點
- Hardware functional-safety features (windowed WDT, deterministic event system, lock-bit Flash) (對比ATSAMD21E15B-AU)
- Same die, AEC-Q100 qualified variant available for automotive (對比ATSAMDA1E15B-MBTVAO)
- On-chip USB 2.0 Full-Speed transceiver (對比ATSAML21E15B-MUT)
設計說明
The 32-VQFN package has a thermal pad that must be soldered to a ground copper pour of at least 25 mm^2 to keep the junction temperature within safe limits. For continuous full-load operation at 48 MHz, the device dissipates approximately 30 mW (estimated: VDD=3.3V, ICC=9 mA, P=VDD x ICC). This is well within the 1 W dissipation rating of the package when the exposed pad is properly soldered. Designers should avoid routing high-current traces across the thermal pad to maintain thermal conduction.
Decouple VDD with a 100 nF X7R 0402 ceramic capacitor placed within 2 mm of the VDD pin, and add a bulk 4.7 uF X5R ceramic capacitor on the same net. The VDDCORE pin (internal 1.2 V LDO output) requires a 1 uF ceramic capacitor. Route SERCOM signals as impedance-controlled 50 ohm traces when running SPI at >25 MHz or I2C Fast Mode Plus (1 Mbaud). Keep the USB DP/DM traces as a 90 ohm differential pair with no stubs.
Three common pitfalls when designing with the ATSAMDA1E15B-MBT: (1) forgetting to solder the exposed thermal pad, which degrades thermal performance and causes reliability failures; (2) using the wrong ADC reference - the default bandgap reference is 1.0 V, but the ADC supports an external VREF for higher accuracy; (3) not enabling the brown-out detector (BOD) at startup, which can cause undefined behavior on slow-rising power rails. Consult the SAM DA1 family datasheet section on 'Start-Up Considerations' before finalizing the schematic.
合規資訊
RoHS/REACH compliant per Microchip product page. The -MBT variant is industrial grade (-40C to +85C); use the -MBTVAO suffix variant for AEC-Q100 automotive qualification. Halogen-free per Microchip declaration.
