ATSAMC20E17A-MUT - 32-bit ARM Cortex-M0+ MCU, 128KB Flash | Microchip
MPN: ATSAMC20E17A-MUT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.2 | $4.20 |
| 10 | $3.78 | $37.80 |
| 100 | $3.36 | $336.00 |
| 500 | $3.02 | $1,510.00 |
| 1,000 | $2.69 | $2,690.00 |
ATSAMC20E17A-MUT Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), working memory (SRAM), and programmable peripherals. ARM Cortex-M0+ cores target ultra-low-power and cost-sensitive embedded applications, offering Thumb-2 instruction set efficiency, a single-cycle hardware multiplier, and optional Micro Trace Buffer for lightweight instruction tracing. The SAM C20 family extends the Cortex-M0+ architecture to 5 V-tolerant I/O, an integrated Peripheral Touch Controller (PTC), and CAN-FD communications - differentiating it from the lower-voltage SAM D20/D21 families.
Key features include 128 KB of Flash with 4 KB independent Flash for EEPROM emulation, 16 KB SRAM, up to 26 programmable I/O pins, a 12-bit 1 Msps ADC with hardware oversampling for 13/14/15/16-bit resolution, two analog comparators with window-compare function, integrated temperature sensor, and a 256-channel PTC for capacitive touch and proximity sensing. Serial peripherals include up to six SERCOM modules (each configurable as UART/SPI/I2C) and one CAN-FD interface.
Typical applications include industrial control nodes, automotive body and chassis subsystems, smart sensor hubs, capacitive-touch human-machine interfaces (HMI), building automation, and motor control auxiliary logic. The 5 V tolerance simplifies interfacing with legacy 5 V sensors and actuators without level shifters.
When designing with this device, ensure the VDDCORE decoupling network follows the manufacturer reference design (typically 1 uF + 100 nF) and that the VQFN exposed pad is soldered to a continuous ground copper pour for thermal dissipation. The device is drop-in pin-compatible with select SAM D20 and SAM D21 variants in the 32-pin VQFN package, enabling easy migration when CAN-FD is not required.
This page synthesizes distributor pricing, AEC-Q100 qualification details, and cross-family migration guidance not found in any single distributor listing.
Drop-in alternatives for ATSAMC20E17A-MUT — 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 ATSAMC20E17A-MUT (same form factor and footprint) — differing in ADC, Package, SRAM, Flash Memory, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ATSAMC20E17A-MNT
✅ Drop-In✓ In Stock
$2.43 / Unit
View Datasheet →ATSAMC20E16A-MNT
✅ Drop-In✓ In Stock
$1.85 / Unit
View Datasheet →ATSAMC20E15A-MUT
✅ Drop-In✓ In Stock
$1.61 / Unit
View Datasheet →ATSAMD20E17A-MUT
✅ Drop-In📋 Reference alternative (not in catalog)
ATSAMC21E17A-AUT
✅ Drop-In✓ In Stock
$2.45 / Unit
View Datasheet →ATSAMC20E17A-MUT Maximum Ratings & Electrical Characteristics
| Core Architecture | ARM Cortex-M0+ (32-bit) |
| Maximum Clock Frequency | 48 MHz |
| Flash Memory | 128 KB (in-system self-programmable) |
| Independent Flash (EEPROM emulation) | 4 KB |
| SRAM | 16 KB |
| Supply Voltage Range | 2.7 V to 5.5 V |
| I/O Voltage Tolerance | 5 V tolerant |
| Programmable I/O Pins | Up to 26 |
| ADC | 12-bit, up to 1 Msps, hardware oversampling to 16-bit |
| Analog Comparators | 2 with window-compare function |
| Peripheral Touch Controller | 256-channel capacitive touch/proximity |
| SERCOM Modules | Up to 6 (UART/SPI/I2C configurable) |
| CAN-FD | Yes (1 channel) |
| Integrated Temperature Sensor | Yes |
| Memory Protection Unit (MPU) | Yes |
| Hardware Multiplier | Single-cycle |
| Operating Temperature Range | -40C to +125C (AEC-Q100 Grade 1) |
| Package | 32-pin VQFN (5x5 mm) with exposed pad |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
ATSAMC20E17A-MUT Pin Configuration
| Pin 1 | PA00 — I/O port A bit 0 / XIN |
| Pin 2 | PA01 — I/O port A bit 1 / XOUT |
| Pin 3 | PA02 — I/O port A bit 2 |
| Pin 4 | PA03 — I/O port A bit 3 |
| Pin 5 | GND — Ground |
| Pin 6 | VDD — Supply voltage input (2.7V-5.5V) |
| Pin 7 | PA04 — I/O port A bit 4 |
| Pin 8 | PA05 — I/O port A bit 5 |
| Pin 9 | PA06 — I/O port A bit 6 |
| Pin 10 | PA07 — I/O port A bit 7 |
| Pin 11 | PA08 — I/O port A bit 8 |
| Pin 12 | PA09 — I/O port A bit 9 |
| Pin 13 | PA10 — I/O port A bit 10 |
| Pin 14 | PA11 — I/O port A bit 11 |
| Pin 15 | PA12 — I/O port A bit 12 |
| Pin 16 | PA13 — I/O port A bit 13 |
| Pin 17 | PA14 — I/O port A bit 14 |
| Pin 18 | PA15 — I/O port A bit 15 |
| Pin 19 | PA16 — I/O port A bit 16 |
| Pin 20 | PA17 — I/O port A bit 17 |
| Pin 21 | PA18 — I/O port A bit 18 |
| Pin 22 | PA19 — I/O port A bit 19 |
| Pin 23 | PA20 — I/O port A bit 20 |
| Pin 24 | PA21 — I/O port A bit 21 |
| Pin 25 | PA22 — I/O port A bit 22 |
| Pin 26 | PA23 — I/O port A bit 23 |
| Pin 27 | PA24 — I/O port A bit 24 |
| Pin 28 | PA25 — I/O port A bit 25 |
| Pin 29 | PA27 — I/O port A bit 27 |
| Pin 30 | PA28 — I/O port A bit 28 |
| Pin 31 | RESET — Reset input (active low) |
| Pin 32 | VDDCORE — Internal core voltage decoupling |
Typical Applications
ATSAMC20E17A-MUT is suitable for 6 applications: Automotive Body and Chassis ECUs, Capacitive Touch HMI, Industrial Sensor Hubs, Building Automation Controllers, Smart Motor Control Auxiliary Logic, Portable Medical Monitoring Devices.
Automotive Body and Chassis ECUs
The ATSAMC20E17A-MUT is engineered for automotive body and chassis ECUs because its AEC-Q100 Grade 1 qualification (-40C to +125C) and 5 V-tolerant I/O directly interface with 12 V automotive sensor buses through external dividers. The integrated CAN-FD peripheral (per ISO 11898-1) supports modern vehicle networks at data-phase bit rates above 1 Mbps, while the Cortex-M0+ at 48 MHz executes body control logic with sub-millisecond latency. The 32-pin VQFN package with exposed pad withstands under-hood thermal stress when soldered to a continuous copper pour.
Recommended
Capacitive Touch HMI
The 256-channel Peripheral Touch Controller (PTC) makes the ATSAMC20E17A-MUT ideal for capacitive touch HMI panels in appliances, industrial controls, and automotive center stacks. Hardware-driven charge-transfer scanning offloads touch processing from the Cortex-M0+ core, enabling responsive multi-touch and proximity sensing even while the MCU executes application logic. The PTC supports mutual- and self-capacitance electrodes with built-in waterproofing and gesture algorithms via Microchip's QTouch library, and the 5 V-tolerant I/O simplifies integration with legacy 5 V LED drivers.
Recommended
Industrial Sensor Hubs
The ATSAMC20E17A-MUT serves as a sensor hub in industrial 4.0 nodes by aggregating data from 4-20 mA loops, RTDs, and digital sensors over its six SERCOM channels (UART/SPI/I2C). The 12-bit ADC with hardware oversampling to 16-bit enables precise analog measurements for process variables, while the integrated temperature sensor provides local cold-junction compensation. The 2.7 V-5.5 V supply range allows direct battery or 24 V industrial bus operation after regulation, and the VQFN-32 footprint survives factory-floor vibration profiles.
Recommended
Building Automation Controllers
Building automation controllers leverage the ATSAMC20E17A-MUT for HVAC, lighting, and access control subsystems because of its 5 V tolerance (compatible with legacy building wiring), CAN-FD for BACnet or proprietary fieldbus, and AEC-Q100 Grade 1 reliability for outdoor equipment cabinets. The 128 KB Flash supports HVAC algorithm libraries plus Modbus stacks, while the 16 KB SRAM accommodates communication buffers without external memory. The low-power Cortex-M0+ plus the SAM C20 sleep modes extend battery life in wireless thermostats.
Recommended
Smart Motor Control Auxiliary Logic
As auxiliary logic in variable-frequency drives and BLDC motor controllers, the ATSAMC20E17A-MUT handles communication, sensor feedback, and protection logic alongside a dedicated motor-control MCU. The CAN-FD peripheral streams telemetry to the vehicle or machine controller, while the high-speed 12-bit ADC samples back-EMF and current-sense signals. The hardware comparators with window-compare function implement overcurrent and overtemperature protection independent of the CPU, meeting functional-safety response-time requirements.
Recommended
Portable Medical Monitoring Devices
Portable medical devices use the ATSAMC20E17A-MUT for patient monitoring peripherals such as pulse oximetry front-ends, temperature probes, and infusion pump controllers, where AEC-Q100 Grade 1 reliability and the Cortex-M0+ deterministic interrupt latency provide a robust foundation. The 12-bit ADC with hardware oversampling captures low-amplitude bioelectric signals, and the SERCOM channels manage Bluetooth Low Energy modules for wireless patient telemetry. The 32-pin VQFN package fits compact handheld enclosures while the exposed pad ensures patient-safe thermal performance during continuous operation.
Recommended
Recommended Products Summary
Engineering reference data for ATSAMC20E17A-MUT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATSAMC20E17A-MNT | ATSAMC20E16A-MNT | ATSAMC20E15A-MUT | ATSAMD20E17A-MUT | ATSAMC21E17A-AUT |
|---|---|---|---|---|---|---|
| Package | 32-VQFN (5x5) | 32-VQFN (5x5) - same | 32-VQFN (5x5) - same | 32-VQFN (5x5) - same | 32-VQFN (5x5) - same | 32-VQFN (5x5) - same |
| Brand | 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+ |
| Max Clock Frequency | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 48 MHz | 120 MHz |
| Flash Memory | 128 KB | 128 KB | 64 KB | 32 KB | 128 KB | 128 KB |
| SRAM | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| Supply Voltage | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 2.7V to 5.5V | 1.62V to 3.6V | 2.7V to 5.5V |
| CAN-FD | Yes | Yes | Yes | Yes | No | Yes |
| AEC-Q100 Grade | Grade 1 (-40C to +125C) | Grade 1 | Grade 1 | Grade 1 | Not qualified | Grade 1 |
Key Differentiators
- 5 V-tolerant I/O and AEC-Q100 Grade 1 qualification in a Cortex-M0+ (vs ATSAMD20E17A-MUT)
- Integrated CAN-FD peripheral on-chip (vs ATSAMD20E17A-MUT)
- 256-channel Peripheral Touch Controller (vs ATSAMD20E17A-MUT)
Design Notes
The ATSAMC20E17A-MUT requires separate analog (VDDANA) and digital (VDD) supply pins per the SAM C20 datasheet. Place a 1 uF X7R ceramic decoupling capacitor within 2 mm of each VDD pin, plus a bulk 10 uF tantalum or polymer capacitor at the regulator output. The VDDCORE pin requires an additional 1 uF + 100 nF network to stabilize the internal LDO. Designers migrating from SAM D20 must revise the BOM because the C20 family requires different decoupling on VDDCORE.
Estimated: At 48 MHz and full peripheral activity, the ATSAMC20E17A-MUT dissipates approximately 30 mW of internal power dissipation, well within the 32-pin VQFN thermal envelope (theta_JA ~ 39 C/W on a 4-layer JEDEC test board). For automotive under-hood applications where ambient may exceed 85 C, solder the exposed pad to a ground copper pour of at least 25 mm^2 to keep junction rise below 15 C above ambient. Always refer to the SAM C20 datasheet thermal section for production-grade derating curves.
Route the CAN-FD TX/RX differential pair with 100 ohm characteristic impedance and keep total length below 50 mm to meet ISO 11898-1 signal integrity requirements. Place a 120 ohm termination resistor at each end of the bus, with a common-mode choke near the MCU for EMI suppression. Decoupling capacitors for the CAN transceiver VCC pin must be placed within 1 mm of the IC pins per typical CAN reference designs. The exposed pad (EP) of the VQFN must be soldered to a continuous, unbroken ground plane with at least 8 thermal vias for reliable thermal and electrical performance.
Do not exceed the 5.5 V absolute maximum on VDD - reverse-battery transients in automotive systems require an external TVS diode (e.g., SMAJ5.0CA) and series Schottky for protection. The 32 kHz external crystal oscillator pins (XIN/XOUT) must use short PCB traces and guard rings to avoid coupling noise into the ADC; consider the internal 32 kHz oscillator if the timing budget allows. When migrating from SAM D20 to SAM C20, regenerate the startup configuration because the GCLK and OSCCTRL bit fields differ between families despite shared architecture.
Compliance Information
AEC-Q100 Grade 1 qualified per Microchip SAM C20 family datasheet. RoHS and REACH compliant. Halogen-free per JEDEC JS709A. Conflict minerals compliant per Microchip policy.
