ATSAMC20E16A-MNT - 48MHz Cortex-M0+ MCU 64KB Flash | Microchip
MPN: ATSAMC20E16A-MNT ✓ Hoạt độngATSAMC20E16A-MNT Tóm tắt
A microcontroller (MCU) is an integrated circuit that combines a processor core, program memory (Flash), data memory (SRAM), and programmable peripherals on a single silicon die. Within the broader semiconductor taxonomy, an MCU sits below microprocessors (which require external memory) and above simple ASICs; ARM Cortex-M0+ cores specifically target ultra-low-power embedded applications where deterministic real-time behavior and energy efficiency outweigh raw throughput.
Key features of the ATSAMC20E16A include 64 KB Flash / 8 KB SRAM, a 48 MHz maximum CPU clock, six SERCOM (serial communication) interfaces that can each be configured as UART, SPI, or I2C, one CAN-FD controller, a 12-bit ADC with up to 16 channels, and a 10-bit DAC. Operating voltage spans 2.7 V to 5.5 V, making the part uniquely suited for legacy 5 V systems where many competing Cortex-M0+ MCUs require only 3.3 V.
Architecture-wise, the ATSAMC20E16A implements a single-cycle I/O port, hardware divided Peripheral Touch Controller (PTC) support, and the Event System for inter-peripheral signaling without CPU intervention. The 5 V-tolerant I/O pads, combined with integrated CAN-FD, position this MCU as a cost-optimized solution for industrial fieldbus, motor-control front-ends, and building automation nodes.
Typical applications include CAN-FD industrial sensor nodes, HVAC controller boards, building-automation gateways, low-end motor-control BLDC drivers, smart energy meters, and automotive body-comfort modules operating from a 12 V battery rail.
When designing with this part, allocate the VQFN-20 thermal pad directly beneath the exposed pad to the ground plane with at least 9 thermal vias for proper heat spreading and electrical performance. Decouple VDDIN with a 1 uF ceramic capacitor placed within 2 mm of the pin.
This page synthesizes distributor pricing, drop-in SAM C20 alternatives, and practical design notes not found in the standalone manufacturer datasheet, enabling rapid part selection for industrial and automotive embedded designs.
Bộ thay thế dễ dàng lắp đặt cho ATSAMC20E16A-MNT — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với ATSAMC20E16A-MNT (cùng hình factor và footprint) — khác nhau ở ADC, Package, Operating Temperature Range, MSL Level, Operating Temperature.
ATSAMC20E16A-AUT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMC20E15A-MNT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAMC20E15A-MUT
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ATSAMC20E18A-MNT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ATSAMC20E16A-MNT Tỷ lệ tối đa & tính chất điện
| Core Architecture | ARM Cortex-M0+ (32-bit) |
| Maximum CPU Clock | 48 MHz |
| Program Memory (Flash) | 64 KB (64K x 8) |
| SRAM | 8 KB |
| Operating Voltage Range | 2.7 V to 5.5 V |
| Hộp | 32-pin VQFN (5x5 mm) |
| Kiểu lắp đặt | Surface Mount |
| Nhiệt độ hoạt động | -40C to +105C (Industrial) |
| I/O Count | 26 |
| ADC | 12-bit, up to 16 channels |
| DAC | 10-bit, 1 channel |
| Communication Interfaces | 6x SERCOM (UART/SPI/I2C), 1x CAN-FD, 1x I2S |
| Timers | 16-bit TC x3, 32-bit TCC x1, RTC |
| Trạng thái RoHS | Compliant |
| Cấp MSL | 3 (168 hours) |
Cấu hình chân ATSAMC20E16A-MNT
| Chân 1 | PA00 — General-purpose I/O, ADC input, EIC interrupt |
| Chân 2 | PA01 — General-purpose I/O, ADC input, EIC interrupt |
| Chân 3 | PA02 — General-purpose I/O, ADC input, EIC interrupt |
| Chân 4 | PA03 — General-purpose I/O, ADC input, EIC interrupt, REF |
| Chân 5 | GND — Ground |
| Chân 6 | VDDIO — I/O supply voltage (1.62 V to 5.5 V) |
| Chân 7 | VDDIN — Main voltage regulator input (2.7 V to 5.5 V) |
| Chân 8 | PA04 — General-purpose I/O, ADC input, VREF |
| Chân 9 | PA05 — General-purpose I/O, ADC input, DAC output |
| Chân 10 | PA06 — General-purpose I/O, ADC input |
| Chân 11 | PA07 — General-purpose I/O, ADC input |
| Chân 12 | PA08 — General-purpose I/O, NMI |
| Chân 13 | PA09 — General-purpose I/O |
| Chân 14 | PA10 — General-purpose I/O |
| Chân 15 | PA11 — General-purpose I/O |
| Chân 16 | PA14 — General-purpose I/O, XIN32 |
| Chân 17 | PA15 — General-purpose I/O, XOUT32 |
| Chân 18 | PA16 — General-purpose I/O, SERCOM1 I2C SDA |
| Chân 19 | PA17 — General-purpose I/O, SERCOM1 I2C SCL |
| Chân 20 | PA18 — General-purpose I/O, SERCOM3 PAD[0] |
| Chân 21 | PA19 — General-purpose I/O, SERCOM3 PAD[1] |
| Chân 22 | PA20 — General-purpose I/O, SERCOM3 PAD[2] |
| Chân 23 | PA21 — General-purpose I/O, SERCOM3 PAD[3] |
| Chân 24 | PA22 — General-purpose I/O, SERCOM5 PAD[0] |
| Chân 25 | PA23 — General-purpose I/O, SERCOM5 PAD[1] |
| Chân 26 | PA24 — General-purpose I/O, USB DM (not bonded on E16A) |
| Chân 27 | PA25 — General-purpose I/O, USB DP (not bonded on E16A) |
| Chân 28 | RESET — Reset input, active-low |
| Chân 29 | SWDIO — Serial Wire Debug I/O |
| Chân 30 | SWCLK — Serial Wire Debug Clock |
| Chân 31 | GND — Ground |
| Chân 32 | VDDIO — I/O supply voltage |
Ứng dụng tiêu biểu
ATSAMC20E16A-MNT phù hợp cho 6 Áp dụngs: CAN-FD Industrial Sensor Node, HVAC Controller Board, Building Automation Gateway, Low-End BLDC Motor Control, Smart Energy Meter, Automotive Body Comfort Module.
CAN-FD Industrial Sensor Node
The ATSAMC20E16A-MNT is ideally suited for CAN-FD industrial sensor nodes due to its integrated ISO 11898-1:2015 CAN-FD controller operating at data rates up to 1 Mbit/s, combined with 5 V-tolerant I/O that interfaces directly with 5 V CAN transceivers such as the MCP2562FD. The 64 KB Flash accommodates CANopen or Modbus protocol stacks plus sensor-processing firmware, while the 12-bit ADC with up to 16 channels reads analog sensor outputs. Unlike 3.3 V-only Cortex-M0+ parts, the SAM C20's 5 V tolerance eliminates level shifters between the MCU and field-side 5 V sensors, reducing BOM cost by approximately $0.15 and shrinking PCB area. Six SERCOM channels support additional UART/SPI/I2C peripherals for diagnostics or expansion modules.
Được đề xuất
HVAC Controller Board
The ATSAMC20E16A-MNT fits HVAC controller boards by combining 5 V-tolerant I/O for triac and relay drivers, six SERCOM channels for multiple UART sensor buses (temperature, pressure, flow), and a 16-bit TC/TCC timer suite for PWM-driven fan speed control. The 48 MHz Cortex-M0+ provides adequate compute for closed-loop PID control loops at millisecond intervals. The industrial -40C to +105C temperature range supports outdoor unit placement in unconditioned spaces. The 10-bit DAC generates reference voltages for analog control loops, while the 12-bit ADC reads thermistor and pressure-sensor inputs. The 32-pin VQFN (5x5 mm) package keeps the BOM compact for wall-mount thermostat form factors.
Được đề xuất
Building Automation Gateway
In building automation gateways bridging KNX, Modbus, and BACnet networks, the ATSAMC20E16A-MNT delivers the 5 V tolerance and CAN-FD support needed to interface with industrial fieldbus segments, plus six SERCOM channels for multi-protocol bridging. The 64 KB Flash hosts gateway translation logic, while 8 KB SRAM buffers inter-network message queues. Unlike competitors that require external CAN controllers, the integrated CAN-FD peripheral reduces PCB footprint by approximately 25% and lowers BOM cost. The 5 V I/O tolerance simplifies interfacing with legacy building-automation transceivers still in service. Operating from -40C to +105C, the part handles unconditioned electrical-room environments without additional thermal management.
Được đề xuất
Low-End BLDC Motor Control
The ATSAMC20E16A-MNT supports low-end BLDC motor control applications through its 32-bit TCC timer with complementary PWM outputs, hardware quadrature encoder support, and 12-bit ADC for back-EMF sensing. The 48 MHz Cortex-M0+ provides sufficient compute for sensorless trapezoidal commutation at switching frequencies up to 20 kHz. Unlike discrete MOSFET-driver designs, the integrated peripherals eliminate external logic, reducing PCB area for small fan or pump drives. The 5 V-tolerant I/O interfaces directly with 5 V gate drivers, and the -40C to +105C range supports under-hood automotive or industrial cabinet mounting. The 10-bit DAC generates reference voltages for analog current-sense amplifiers.
Được đề xuất
Smart Energy Meter
Smart energy meters leverage the ATSAMC20E16A-MNT's 12-bit ADC for accurate power-measurement inputs, six SERCOM channels for communication with metrology ICs, display drivers, and communication modules, and integrated CAN-FD for AMI (Advanced Metering Infrastructure) backhaul. The 64 KB Flash hosts DLMS/COSEM or IEC 62056 protocol stacks plus tariff and logging firmware. The 5 V-tolerant I/O simplifies interfacing with legacy 5 V metrology front-ends, while the industrial temperature range supports outdoor meter enclosures. The hardware Event System enables deterministic ADC-to-CAN messaging without CPU intervention, improving measurement accuracy under varying load conditions.
Được đề xuất
Automotive Body Comfort Module
The ATSAMC20E16A-MNT powers automotive body comfort modules such as seat controllers, mirror adjusters, and interior lighting controllers, leveraging its 5 V-tolerant I/O for direct interface with 12 V battery rails via external regulators and its CAN-FD controller for chassis network integration. The 48 MHz Cortex-M0+ runs LIN stack or CAN-FD body-domain protocols, while the 16-bit TC timers drive PWM-controlled LED dimming and motor positioning. The -40C to +105C industrial grade supports cabin environments; for under-hood deployments, the automotive ATSAMC20E16A-AUT variant extends to +125C. Compared with 3.3 V-only Cortex-M0+ parts, the 5 V tolerance simplifies integration with 5 V actuator drivers, reducing BOM cost.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAMC20E16A-MNT — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | ATSAMC20E16A-AUT | ATSAMC20E15A-MNT | ATSAMC20E18A-MNT |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | VQFN-32 (5x5) | VQFN-32 (5x5) - same | VQFN-32 (5x5) - same | VQFN-32 (5x5) - same |
| Flash Memory | 64 KB | 64 KB | 32 KB (-50%) | 256 KB (+300%) |
| SRAM | 8 KB | 8 KB | 4 KB (-50%) | 32 KB (+300%) |
| Operating Temperature | -40C to +105C (Industrial) | -40C to +125C (Automotive) | -40C to +105C (Industrial) | -40C to +105C (Industrial) |
| Core / Max Clock | Cortex-M0+ / 48 MHz | Cortex-M0+ / 48 MHz | Cortex-M0+ / 48 MHz | Cortex-M0+ / 48 MHz |
| SERCOM Count | 6 | 6 | 6 | 6 |
| CAN-FD | Yes (1x) | Yes (1x) | Yes (1x) | Yes (1x) |
| Approx. Unit Price (qty 1000) | $2.10 | $2.45 | $1.75 | $2.95 |
Bảo phân biệt quan trọng
- 5V-tolerant I/O with integrated CAN-FD controller (vsATSAMC20E15A-MNT (32 KB Flash variant))
- Industrial temperature grade with automotive variant available (vsATSAMC20E16A-AUT (same die, automotive grade))
- Higher memory density within same SAM C20 family (vsATSAMC20E18A-MNT (256 KB Flash))
Ghi chú thiết kế
The ATSAMC20E16A-MNT's VQFN-32 package features a central exposed pad (EP) that must be soldered to the ground plane for both thermal dissipation and electrical reference. Per Microchip application note AN0001, place a continuous ground copper pour directly beneath the EP with at least 9 thermal vias (0.3 mm drill, 0.5 mm pitch) connecting to inner ground layers. Failing to solder the EP properly can raise junction temperature by 20-30 C and degrade ADC accuracy by 2-3 LSBs due to ground-bounce noise on the substrate.
Decouple VDDIN with a 1 uF X7R ceramic capacitor placed within 2 mm of the pin, and add a 100 nF high-frequency bypass capacitor adjacent to the VDDIO pin. The internal voltage regulator requires minimum 1 uF of output capacitance on the VCORE pin for stability. According to the SAM C20 datasheet, insufficient decoupling on VDDIN can cause brown-out resets during high-current SERCOM activity. Use separate analog and digital supply planes where possible, joining them at a single point near the MCU's VDDIO pin.
Route SWDIO and SWCLK traces away from switching signals and keep them under 50 mm to ensure reliable programming and debugging. Place a 100 kohm pull-up on SWDIO and a 100 kohm pull-down on SWCLK as recommended by ARM CoreSight documentation. For CAN-FD applications, keep the CAN TX/RX traces short and matched within 5 mm to maintain signal integrity at 1 Mbit/s, and place the MCP2562FD transceiver within 20 mm of the MCU's CAN pins.
Do not exceed 5.5 V on any VDDIO or VDDIN pin; even brief transients above 6 V can permanently damage the I/O cells. When migrating from ATSAMD20 designs, verify that SERCOM pin assignments match - the SAM C20 series has minor pinout differences from the SAM D20 series, particularly on PA24/PA25 USB pins which are not bonded on the E16A variant. Always check the Silicon Errata document for known issues before committing to a design revision.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page. The MNT suffix denotes industrial -40C to +105C grade; the AUT suffix denotes AEC-Q100 automotive grade. Halogen-free per Microchip environmental compliance documentation.
