ATSAMC20E15A-MUT - 32KB Flash 48MHz Cortex-M0+ MCU | Microchip
MPN: ATSAMC20E15A-MUT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.55 | $2.55 |
| 10 | $2.29 | $22.90 |
| 100 | $2.03 | $203.00 |
| 500 | $1.82 | $910.00 |
| 1,000 | $1.61 | $1,610.00 |
ATSAMC20E15A-MUT Overview
A microcontroller (MCU) is an integrated circuit that combines a CPU core, program memory, data memory, and programmable peripherals on a single die. The Cortex-M0+ is an energy-efficient ARM core designed for low-power deterministic embedded applications; it sits within the broader ARM Cortex-M family and the wider microcontroller hierarchy (MCU -> microprocessor -> semiconductor). The SAM C20 sub-family belongs to Microchip's 5 V-tolerant Cortex-M0+ lineup that fills the gap between 3.3 V low-power MCUs and traditional 5 V microcontrollers, allowing direct interface to legacy 5 V analog and logic circuitry.
Key features include a Peripheral Touch Controller (PTC) for capacitive touch sensing, a single-cycle hardware multiplier, a Micro Trace Buffer for lightweight instruction trace, a Memory Protection Unit (MPU), Power-on Reset (POR), Brown-out Detection (BOD), and flexible internal/external clock options that include 48 MHz operation. Multiple SERCOM serial communication peripherals can each be configured as UART, I2C, or SPI, providing design flexibility. The integrated CAN-FD controller supports modern automotive and industrial bus protocols.
The ATSAMC20E15A-MUT's architecture combines the Cortex-M0+ core, dual-bank Flash for safe in-field updates, and an advanced analog front end with up to 12-bit ADC, DAC, and operational amplifiers. The SAM C20 family shares peripherals with the SAM D20 family, easing migration through the Microchip ecosystem. Internal oscillators and PLL provide design simplicity and BOM reduction for cost-sensitive designs.
Typical applications include industrial sensor nodes, home automation controllers, smart appliance HMI boards, low-end motor control and fan drivers, building automation gateways, and automotive body electronics with CAN-FD connectivity. The 5 V tolerance makes the device well-suited to environments where 3.3 V-only MCUs cannot reliably interface with existing analog circuitry. The "-MUT" suffix denotes Tape and Reel packaging, while the "-MNT" suffix denotes a Tray packing variant of the same silicon.
When designing with the ATSAMC20E15A-MUT, ensure the exposed pad is soldered to a sufficiently large copper pour (typically at least 1 cm^2) to meet the package's thermal performance and to provide a low-impedance ground return. Decouple VDDIN and VDDIO with 100 nF ceramic capacitors placed as close as possible to each pin pair, and follow Microchip's SAM C20 schematic checklist to validate ADC reference and DAC output filtering.
This page synthesizes verified distributor pricing, parametric drop-in alternatives, and practical design notes that go beyond what is shown on the manufacturer product page.
Drop-in alternatives for ATSAMC20E15A-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 ATSAMC20E15A-MUT (same form factor and footprint) — differing in ADC, Package, SRAM, Operating Temperature, SERCOM Modules.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ATSAMC20E15A-MNT
✅ Drop-In✓ In Stock
$1.42 / Unit
View Datasheet →ATSAMC20G15A-MUT
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.55 / Unit
View Datasheet →ATSAMC20E16A-MUT
✅ Drop-In ⚠️ 参数待验证📋 Reference alternative (not in catalog)
ATSAMD20E15A-MU
✅ Drop-In📋 Reference alternative (not in catalog)
ATSAMD20E15B-MU
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.1 / Unit
View Datasheet →ATSAMC20E15A-MUT Maximum Ratings & Electrical Characteristics
| Core | ARM Cortex-M0+ (32-bit) |
| Maximum CPU Frequency | 48 MHz |
| Flash Memory | 32 KB |
| SRAM | 4 KB |
| Operating Voltage (VDDIN) | 2.7 V to 5.5 V |
| I/O Voltage (VDDIO) | 1.62 V to 5.5 V (independent rail) |
| Operating Temperature Range | -40C to +85C (Industrial) |
| Package | 32-pin VQFN (5x5 mm) with exposed pad |
| Mounting Type | Surface Mount |
| Communication Peripherals | SERCOM (UART/SPI/I2C), CAN-FD |
| Touch Sensing | Peripheral Touch Controller (PTC) |
| Analog | 12-bit ADC, 10-bit DAC, OPAMP |
| Timers | TC (16-bit), TCC (16-bit PWM), RTC |
| Security / Safety | MPU, POR, BOD, Window Watchdog |
| Trace | Micro Trace Buffer (MTB) |
| Hardware Multiplier | Single-cycle 32-bit |
| MSL Level | MSL3 (per JEDEC J-STD-020) |
| RoHS Status | Compliant |
ATSAMC20E15A-MUT Pin Configuration
| Pin 1 | VDDIO — I/O supply voltage (1.62 V to 5.5 V) |
| Pin 2 | PA00 — GPIO / SERCOM / ADC input |
| Pin 3 | PA01 — GPIO / SERCOM / ADC input |
| Pin 4 | PA02 — GPIO / SERCOM / ADC / DAC |
| Pin 5 | PA03 — GPIO / SERCOM / ADC / DAC |
| Pin 6 | GND — Common ground |
| Pin 7 | PA04 — GPIO / SERCOM / ADC |
| Pin 8 | PA05 — GPIO / SERCOM / ADC |
| Pin 9 | PA06 — GPIO / SERCOM / ADC |
| Pin 10 | PA07 — GPIO / SERCOM / ADC |
| Pin 11 | PA08 — GPIO / SERCOM |
| Pin 12 | PA09 — GPIO / SERCOM |
| Pin 13 | PA10 — GPIO / SERCOM |
| Pin 14 | PA11 — GPIO / SERCOM |
| Pin 15 | VDDIN — Main voltage regulator input (2.7 V to 5.5 V) |
| Pin 16 | GND — Common ground |
| Pin 17 | PA14 — GPIO / SERCOM / XCLK |
| Pin 18 | PA15 — GPIO / SERCOM |
| Pin 19 | PA16 — GPIO / SERCOM / I2C SDA |
| Pin 20 | PA17 — GPIO / SERCOM / I2C SCL |
| Pin 21 | PA18 — GPIO / SERCOM |
| Pin 22 | PA19 — GPIO / SERCOM |
| Pin 23 | PA20 — GPIO / SERCOM |
| Pin 24 | PA21 — GPIO / SERCOM |
| Pin 25 | PA22 — GPIO / SERCOM |
| Pin 26 | PA23 — GPIO / SERCOM |
| Pin 27 | PA24 — GPIO / SERCOM |
| Pin 28 | PA25 — GPIO / SERCOM |
| Pin 29 | PA27 — GPIO / Bootloader entry / SERCOM |
| Pin 30 | RESET — Active-low reset input |
| Pin 31 | VDDIO — I/O supply voltage |
| Pin 32 | EP — Exposed thermal pad - must be soldered to PCB ground pour |
Typical Applications
ATSAMC20E15A-MUT is suitable for 6 applications: Industrial Sensor Node, Home Automation Controller, Smart Appliance HMI Board, Low-End Motor Control and Fan Driver, Building Automation Gateway, Automotive Body Electronics (CAN-FD Bus Node).
Industrial Sensor Node
The ATSAMC20E15A-MUT's 5 V GPIO tolerance and CAN-FD support make it a strong fit for industrial 4-20 mA loop-powered sensor nodes. The Cortex-M0+ at 48 MHz handles typical sensor sampling, linearization, and CAN-FD frame transmission with low jitter. With 32 KB Flash, designers can implement MODBUS, CANopen, or proprietary protocols without external memory, and the integrated 12-bit ADC provides adequate resolution for pressure, flow, and temperature transducers.
Recommended
Home Automation Controller
In home automation gateways, the ATSAMC20E15A-MUT provides the deterministic 48 MHz Cortex-M0+ processing needed for multi-protocol bridging across Zigbee, Wi-Fi co-processors, and wired serial buses. The SERCOM peripherals can each be reconfigured as UART, SPI, or I2C, simplifying the BOM when interfaces vary. PTC capacitive touch support allows direct connection of touch keys and sliders without an external touch IC.
Recommended
Smart Appliance HMI Board
The Peripheral Touch Controller (PTC) and SERCOM re-configurability of the ATSAMC20E15A-MUT suit appliance user interfaces that mix capacitive touch, segment LCD, and serial-controlled LED drivers. The 5 V I/O ring drives legacy LED indicators directly without level shifters, reducing BOM cost. Independent VDDIO also keeps the RTC domain alive while the rest of the chip is in deep sleep.
Recommended
Low-End Motor Control and Fan Driver
For low-power BLDC fan, pump, and small DC motor control, the ATSAMC20E15A-MUT's 16-bit TCC timer with PWM and the integrated OPAMP provide closed-loop control without external analog components. The 48 MHz core executes field-oriented control loops at adequate update rates for sub-100 W motors. CAN-FD enables feedback to a vehicle or factory master controller.
Recommended
Building Automation Gateway
Building automation gateways using the ATSAMC20E15A-MUT benefit from CAN-FD for BACnet and CAN-based HVAC networks, plus RS-485 via SERCOM configured as UART. The 5 V tolerance simplifies integration with industrial sensors and actuators. Dual-bank Flash supports secure OTA updates from a central building management server.
Recommended
Automotive Body Electronics (CAN-FD Bus Node)
The ATSAMC20E15A-MUT integrates CAN-FD, which enables modern body-electronics modules such as door controllers, seat controllers, and lighting nodes that must coexist on high-bandwidth vehicle networks. The 5 V GPIO drives automotive-grade LED strings and relay coils directly. Note that AEC-Q100 qualification is NOT claimed for this industrial-temperature grade; AEC-Q100 variants must be selected separately for safety-critical modules.
Recommended
Recommended Products Summary
Engineering reference data for ATSAMC20E15A-MUT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATSAMC20E15A-MNT | ATSAMC20E16A-MUT | ATSAMD20E15A-MU | ATSAMD20E15B-MU |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 32-pin VQFN (5x5 mm) | 32-pin VQFN (5x5 mm) - same | 32-pin VQFN (5x5 mm) - same | 32-pin VQFN (5x5 mm) - same | 32-pin VQFN (5x5 mm) - same |
| Core | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ |
| Maximum CPU 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 | 8 KB | 4 KB | 4 KB |
| Operating Voltage | 2.7 V to 5.5 V (5 V GPIO) | 2.7 V to 5.5 V (5 V GPIO) | 2.7 V to 5.5 V (5 V GPIO) | 1.62 V to 3.6 V (3.3 V only) | 1.62 V to 3.6 V (3.3 V only) |
| CAN-FD | Yes | Yes | Yes | No (D20 family has no CAN) | No (D20 family has no CAN) |
| PTC Touch Controller | Yes | Yes | Yes | Yes | Yes |
| Approx. 1k-piece price | $1.61 | $1.61 | $1.74 | $1.55 | $1.49 |
Key Differentiators
- Independent VDDIO rail enables true 5 V GPIO without level shifters (vs ATSAMD20E15A-MU)
- Integrated CAN-FD controller on-chip (vs ATSAMD20E15A-MU)
- Higher SRAM option (8 KB) in pin-compatible ATSAMC20E16A-MUT (vs ATSAMC20E16A-MUT)
- Tape and Reel packaging supports high-volume SMT assembly (vs ATSAMC20E15A-MNT)
Design Notes
The 32-pin VQFN package exposes a thermal pad (pin 32) on the underside that must be soldered to a continuous PCB ground pour. Microchip's SAM C20 hardware design guide recommends at least 1 cm^2 of copper area on the top layer, with thermal vias to inner ground planes. Failing to solder the exposed pad causes severe junction-temperature rise and unreliable ADC readings.
Place a 100 nF 0402 ceramic decoupling capacitor within 2 mm of each VDDIN pin pair and on VDDIO. Add a bulk 4.7 uF to 10 uF tantalum or ceramic capacitor near the chip. SAM C20 has separate VDDIN and VDDIO rails, so each rail must have its own decoupling network - do not assume a single bulk cap covers both.
SERCOM peripherals are highly flexible but each instance must be explicitly assigned to specific GPIO pins at startup; accidental remapping in firmware is a common cause of seemingly dead interfaces. Lock the SERCOM I/O map in the Atmel START / MPLAB Harmony configuration and document the pinout in the schematic to avoid last-minute PCB rework.
When migrating firmware from SAM D20 to SAM C20, do not assume the same VDDIO/VDDIN routing applies - SAM C20 has an independent VDDIO pin that must be powered even if all peripherals use 3.3 V logic. Forgetting VDDIO causes the GPIO to behave as high-impedance and PTC touch sensing will not function. Always check the SAM C20 datasheet pinout before reusing a D20 PCB layout.
Compliance Information
RoHS and REACH compliant per Microchip product declaration. Industrial temperature grade -40C to +85C. Not AEC-Q100 qualified; for safety-critical automotive use, choose the SAM C20N family. Pb-free reflow per JEDEC J-STD-020 MSL3.
