ATSAMDA1E16B-ABT - 48MHz Cortex-M0+ MCU 64KB Flash | Microchip
MPN: ATSAMDA1E16B-ABT β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.56 | $25.60 |
| 100 | $2.28 | $228.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.82 | $1,820.00 |
ATSAMDA1E16B-ABT Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory (Flash/SRAM), and programmable peripherals on one die. Within the broader semiconductor taxonomy, MCUs belong to the embedded processor family, sitting below microprocessors (MPUs) in complexity but above simple digital logic in capability. The Cortex-M0+ core is ARM's smallest and most energy-efficient application processor, designed for deterministic real-time control in cost- and power-constrained products. SAM DA1 specifically targets automotive functional-safety use cases requiring IEC 61508 SIL-capable development flows.
Key differentiating features include 4 SERCOM serial-communication modules (each configurable as USART, I2C, or SPI), a 12-bit ADC, a 10-bit DAC, and full-speed USB device support. The device also integrates a hardware CRC module, a 32 kHz RTC, and up to 22 GPIO. AEC-Q100 qualification ensures operation from -40C to +125C with documented PPAP and FMEDA support, which is mandatory for body, chassis, and powertrain ECUs.
Architecturally, the SAM DA1 uses a single-cycle Thumb-2 instruction set, deterministic interrupt latency, and a Microchip peripheral event system for inter-module signalling without CPU intervention. SleepWalking peripherals and multiple low-power modes (IDLE, STANDBY, BACKUP) enable current consumption below 1 mA in deep-sleep while still allowing wake on peripheral events.
Typical applications include automotive body controllers, sensor interfaces, LIN nodes, HVAC control modules, and industrial safety PLCs. Design considerations include routing the 32.768 kHz crystal close to XIN/XOUT, providing a 100 nF + 4.7 uF decoupling network on VDD, and ensuring the exposed pad (EP) is soldered to a continuous ground pour for thermal dissipation. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Drop-in alternatives for ATSAMDA1E16B-ABT β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ATSAMDA1E16B-ABT (same form factor and footprint) β differing in Package, Operating Temperature, ADC, SERCOM Modules, DAC.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
ATSAMD21E16B-AU
β Drop-Inβ In Stock
$2.1 / Unit
View Datasheet βATSAMD21G16B-AU
β Drop-Inβ In Stock
$2.52 / Unit
View Datasheet βATSAMD21E16C-UUT
β Drop-Inβ In Stock
$2.52 / Unit
View Datasheet βATSAMD21E16B-AF
β Drop-Inβ In Stock
$2.19 / Unit
View Datasheet βATSAMD21E17A-MF
β Drop-Inβ In Stock
$3.49 / Unit
View Datasheet βATSAMDA1G16B-AU
β Drop-Inπ Reference alternative (not in catalog)
ATSAMDA1E16B-ABT Maximum Ratings & Electrical Characteristics
| Core | ARM Cortex-M0+ (32-bit) |
| Maximum Clock Frequency | 48 MHz (45 DMIPS) |
| Flash Memory | 64 KB (64K x 8) |
| SRAM | 8 KB |
| RWW Flash | 2 KB |
| Supply Voltage (VDD) | 1.62 V to 3.63 V |
| Operating Temperature | -40C to +125C (automotive grade) |
| Package | 32-TQFP (7x7 mm) |
| SERCOM Modules | 4 (configurable USART/I2C/SPI) |
| ADC | 12-bit, up to 20 channels |
| DAC | 10-bit, 1 channel |
| USB | Full-Speed USB Device |
| GPIO | Up to 22 |
| AEC-Q100 Qualification | Yes (Grade 1) |
| Mounting Type | Surface Mount (Tape & Reel) |
ATSAMDA1E16B-ABT Pin Configuration
| Pin 1 | PA00 β GPIO / XIN32 (external 32.768 kHz crystal input) |
| Pin 2 | PA01 β GPIO / XOUT32 (external 32.768 kHz crystal output) |
| Pin 3 | PA02 β GPIO / AIN0 (ADC analog input) |
| Pin 4 | PA03 β GPIO / AIN1 / VREFA (ADC reference) |
| Pin 5 | GND β Ground |
| Pin 6 | VDD β Digital supply voltage (1.62V to 3.63V) |
| Pin 7 | PA04 β GPIO / AIN2 |
| Pin 8 | PA05 β GPIO / AIN3 |
| Pin 9 | PA06 β GPIO / AIN4 |
| Pin 10 | PA07 β GPIO / AIN5 |
| Pin 11 | PA08 β GPIO / AIN6 |
| Pin 12 | PA09 β GPIO / AIN7 |
| Pin 13 | PA10 β GPIO / AIN8 |
| Pin 14 | PA11 β GPIO / AIN9 / USB D- |
| Pin 15 | GND β Ground |
| Pin 16 | VDD β Digital supply voltage |
| Pin 17 | PA12 β GPIO / AIN10 / USB D+ |
| Pin 18 | PA13 β GPIO / AIN11 |
| Pin 19 | PA14 β GPIO / AIN12 |
| Pin 20 | PA15 β GPIO / AIN13 |
| Pin 21 | PA16 β GPIO / AIN14 / SERCOM1 PAD0 |
| Pin 22 | PA17 β GPIO / AIN15 / SERCOM1 PAD1 |
| Pin 23 | PA18 β GPIO / SERCOM1 PAD2 |
| Pin 24 | PA19 β GPIO / SERCOM1 PAD3 |
| Pin 25 | PA20 β GPIO / SERCOM3 PAD0 |
| Pin 26 | PA21 β GPIO / SERCOM3 PAD1 |
| Pin 27 | PA22 β GPIO / SERCOM3 PAD2 |
| Pin 28 | PA23 β GPIO / SERCOM3 PAD3 |
| Pin 29 | PA24 β GPIO / USB SOF output |
| Pin 30 | PA25 β GPIO |
| Pin 31 | RESET β Reset input (active low) |
| Pin 32 | VDD β Digital supply voltage |
Typical Applications
ATSAMDA1E16B-ABT is suitable for 7 applications: Automotive Body Control Module, Automotive Sensor Interface / ECU, Industrial Functional-Safety PLC Module, HVAC and Climate Control Module, USB-CDC Bridge for Diagnostic Tools, Smart Sensor Hub / IoT Edge Node, Lighting Control Module.
Automotive Body Control Module
The ATSAMDA1E16B-ABT fits automotive BCM applications thanks to its AEC-Q100 Grade 1 qualification (-40C to +125C) and IEC 61508 SIL-capable development flow. The 48 MHz Cortex-M0+ core delivers deterministic interrupt latency required for LIN/CAN stack handling, while the 64 KB Flash accommodates body-control firmware plus a robust bootloader. Four SERCOM modules support LIN (via UART), CAN (via SPI to external transceiver), and GPIO expansion for lighting, mirror, and wiper loads.
Recommended
Automotive Sensor Interface / ECU
The ATSAMDA1E16B-ABT serves as the MCU for sensor-interface ECUs (pressure, temperature, position sensors) where AEC-Q100 qualification and functional-safety documentation are mandated. The 12-bit ADC with up to 20 channels handles multiple analog sensors, while the 10-bit DAC supports actuator excitation. The 2 KB RWW Flash partition enables in-field calibration updates without halting sensor sampling, and the 8 KB SRAM is ample for digital filtering algorithms such as moving averages and Kalman filters.
Recommended
Industrial Functional-Safety PLC Module
For industrial safety PLCs and SIL-rated I/O controllers, the ATSAMDA1E16B-ABT provides IEC 61508 documentation, FMEDA reports, and a safety manual required by certification audits. The Cortex-M0+ core executes safety logic with deterministic timing, while hardware CRC accelerates message integrity checks for PROFIsafe or CIP Safety protocols. Operating from -40C to +125C supports factory-floor ambient conditions and the 32-pin TQFP package simplifies integration into compact PLC sub-modules.
Recommended
HVAC and Climate Control Module
The ATSAMDA1E16B-ABT handles HVAC control modules where AEC-Q100 qualification and a wide operating temperature range are required for under-dash mounting. The 4 SERCOM interfaces drive multiple UART-based flap motors and I2C temperature/humidity sensors, while the 12-bit ADC reads analog thermistors and pressure transducers. The low-power BACKUP mode below 1 mA enables quiescent current budgets needed for battery-disconnected vehicle shipping and storage conditions.
Recommended
USB-CDC Bridge for Diagnostic Tools
The ATSAMDA1E16B-ABT's integrated full-speed USB device controller enables USB-CDC bridge applications for automotive diagnostic tools and ECU flashing stations. The 48 MHz Cortex-M0+ handles USB enumeration plus protocol translation, while the 64 KB Flash accommodates CDC stack plus vendor-specific command sets. AEC-Q100 qualification allows the diagnostic tool to operate in automotive shop environments, and the TQFP-32 package fits into handheld diagnostic housings with minimal PCB area.
Recommended
Smart Sensor Hub / IoT Edge Node
The ATSAMDA1E16B-ABT serves smart-sensor hub nodes where edge-computing, low-power operation, and safety documentation converge. The 4 SERCOM interfaces aggregate I2C sensors (temperature, humidity, IMU), SPI sensors (pressure, gas), and UART peripherals. SleepWalking peripherals and BACKUP mode below 1 mA extend battery life in wirelessly connected sensors, while 8 KB SRAM supports TinyML inference for anomaly detection at the edge without cloud round-trips.
Recommended
Lighting Control Module
The ATSAMDA1E16B-ABT handles LED matrix drivers and adaptive-lighting ECUs where deterministic PWM timing and AEC-Q100 qualification are required. The 48 MHz Cortex-M0+ supports hardware timer PWM generation at LED refresh rates, while SERCOM interfaces drive SPI-based LED driver ICs (TLC5947, LP8860). The wide operating temperature range supports under-hood and headlamp-mounted applications where ambient can exceed 100C during operation.
Recommended
Recommended Products Summary
Engineering reference data for ATSAMDA1E16B-ABT β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATSAMD21E16B-AU | ATSAMD21G16B-AU | ATSAMD21E16C-UUT | ATSAMD21E16B-AF | ATSAMD21E17A-MF | ATSAMDA1G16B-AU |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-32 (7x7 mm) | TQFP-32 (same) | TQFP-32 (same) | TQFP-32 (same) | TQFP-32 (same) | TQFP-32 (same) | TQFP-32 (same) |
| 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 | 64 KB | 64 KB | 64 KB | 64 KB | 64 KB | 128 KB | 64 KB |
| SRAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 16 KB | 8 KB |
| AEC-Q100 Qualified | Yes (Grade 1, FuSa) | Yes (standard, no FuSa bundle) | Yes (standard) | Yes (standard) | Yes (standard) | Yes (standard) | Yes (Grade 1, FuSa) |
| SERCOM Modules | 4 | 6 | 4 | 6 | 6 | 6 | 4 |
| Unit Price (Qty 1, USD) | $2.85 | $2.40 | $2.20 | $2.50 | $2.40 | $3.10 | $2.90 |
Key Differentiators
- IEC 61508 FuSa documentation bundle included (vs ATSAMD21E16B-AU)
- AEC-Q100 Grade 1 qualification with -40C to +125C operating temperature (vs ATSAMD21E17A-MF)
- 64 KB Flash with 2 KB RWW partition for field-updatable boot loader (vs ATSAMD21G16B-AU)
Design Notes
Place a 100 nF ceramic decoupling capacitor as close as possible to every VDD pin (pins 6, 16, 32), plus a single 4.7 uF bulk capacitor on the main VDD rail. Route the 32.768 kHz crystal traces between XIN32 (PA00) and XOUT32 (PA01) as short as possible and guard them with a ground pour to minimize noise coupling into the RTC oscillator. The exposed thermal pad (EP) on the TQFP-32 underside must be soldered to a continuous ground plane for thermal dissipation and electrical reference.
Do not leave the RESET pin (pin 31) floating - it requires an external 10 kOhm pull-up to VDD and a 100 nF capacitor to ground for proper power-on-reset behaviour. Floating RESET can cause intermittent boot failures in production. Estimated: at room temperature and normal humidity, an unconnected RESET pin picks up enough injected charge to randomly enter or exit reset during power-up ramps.
Keep the USB D+ (PA12) and USB D- (PA11) differential pair matched within 2 mm and route them over a continuous ground plane with 90-ohm differential impedance. Place the USB series ferrite beads as close to the connector as possible to suppress common-mode EMI. The full-speed USB signal edge rate is approximately 12 ns, so uncontrolled impedance causes signal-integrity failures during USB enumeration.
Compliance Information
AEC-Q100 Grade 1 qualified per Microchip product page. RoHS and REACH compliant per DigiKey/Mouser product listings. FuSa documentation (FMEDA, safety manual) available from Microchip under NDA for IEC 61508 SIL designs.
