ATSAMC20J17A-ANTS2 - 48MHz Cortex-M0+ MCU 128KB Flash | Microchip
MPN: ATSAMC20J17A-ANTS2 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.92 | $3.92 |
| 10 | $3.53 | $35.30 |
| 100 | $3.1 | $310.00 |
| 500 | $2.78 | $1,390.00 |
| 1,000 | $2.46 | $2,460.00 |
ATSAMC20J17A-ANTS2 Overview
What is a microcontroller? A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (SRAM), and a rich set of peripherals such as timers, communication interfaces, and analog blocks. Within the broader semiconductor taxonomy, an MCU sits under Embedded ICs -> Microcontrollers -> 32-bit Microcontrollers -> ARM Cortex-M Microcontrollers. The SAM C20 family is Microchip's mainstream 5V-tolerant Cortex-M0+ line, targeting appliance control, sensor hubs, and industrial sensor conditioning where both 5V signal compatibility and low power are required.
The ATSAMC20J17A-ANTS2 features 6 SERCOM (serial communication) interfaces that can be configured as UART, SPI, or I2C, a 12-bit ADC with up to 12 channels, multiple 16-bit Timer/Counter modules, and a full-speed USB device interface. Its Event System allows peripherals to communicate without CPU intervention, reducing latency and active-core time. The device supports Sleep, Idle, and Standby modes for power-constrained designs.
On the architecture side, the Cortex-M0+ core implements the ARMv6-M instruction set with single-cycle I/O access via the Single-Cycle I/O Port (BUS MATRIX), giving deterministic response times for time-critical interrupt routines. Hardware divide and a Nested Vectored Interrupt Controller (NVIC) are included. The integrated 48 MHz high-accuracy RC oscillator (DFLL-calibrated to within 0.25% across 0-105C) eliminates the need for an external crystal in many designs.
Typical applications include industrial sensor conditioning, motor-control co-processors, building automation nodes, smart-metering peripherals, and consumer appliance control boards. The 5V-tolerant I/O directly interfaces with legacy industrial sensors and 5V actuators, reducing the need for level shifters.
When designing with this device, place the decoupling network (100 nF + 1 uF) within 3 mm of the VDD pins, keep the SWD trace length below 50 mm, and follow Microchip's SAM C20 hardware design checklist for the 64-pin TQFP layout. Programming is supported through the SWD interface using MPLAB X IDE, IAR, or Keil toolchains.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the standalone manufacturer datasheet.
Drop-in alternatives for ATSAMC20J17A-ANTS2 — 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 ATSAMC20J17A-ANTS2 (same form factor and footprint) — differing in Flash Memory, Package, SRAM, ADC, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ATSAMC20J17A-ANT
✅ Drop-In📋 Reference alternative (not in catalog)
ATSAMC20J18A-ANT
✅ Drop-In✓ In Stock
$2.12 / Unit
View Datasheet →ATSAMC20J16A-AUT
✅ Drop-In✓ In Stock
$1.82 / Unit
View Datasheet →ATSAMC20G18A-ANT
✅ Drop-In✓ In Stock
$2.34 / Unit
View Datasheet →ATSAMC20G16A-AUT
✅ Drop-In✓ In Stock
$2.65 / Unit
View Datasheet →ATSAMC20J17A-ANTS2 Maximum Ratings & Electrical Characteristics
| Core | ARM Cortex-M0+ (32-bit) |
| Family | SAM C20 |
| CPU Speed | 48 MHz |
| Flash Memory | 128 KB (128K x 8) |
| SRAM | 16 KB |
| Operating Voltage | 2.7 V to 5.5 V (5V tolerant) |
| Package | 64-TQFP (10x10 mm) |
| Pin Count | 64 |
| Operating Temperature | -40C to +105C |
| Mounting Type | Surface Mount |
| SERCOM Interfaces | 6 (configurable UART/SPI/I2C) |
| ADC | 12-bit, up to 12 channels |
| USB | Full-Speed USB Device |
| Timers | 16-bit TC, TCC |
| Debug Interface | SWD (Serial Wire Debug) |
| RoHS Status | Compliant |
| MSL Level | 3 |
| Oscillator | Internal 48 MHz high-accuracy RC |
ATSAMC20J17A-ANTS2 64-tqfp (10x10 mm) Pin Configuration Guide
Pin configuration for ATSAMC20J17A-ANTS2 (64-tqfp (10x10 mm) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for ATSAMC20J17A-ANTS2.
Refer to the datasheet for full pin configuration.
Typical Applications
ATSAMC20J17A-ANTS2 is suitable for 7 applications: Industrial Sensor Conditioning, Appliance Control Board, Building Automation Node, USB HID Sensor / Data-Logger, Motor Control Co-Processor, Smart Meter Peripheral, Consumer Appliance Touch Interface.
Industrial Sensor Conditioning
The ATSAMC20J17A-ANTS2's 5V-tolerant I/O and 12-bit ADC with up to 12 channels make it ideal for industrial sensor conditioning boards reading 4-20 mA loops, RTDs, and 0-10 V analog signals directly without level shifters. The Cortex-M0+ at 48 MHz executes digital filtering (moving average or median) on ADC samples within microseconds, while 128 KB Flash supports sensor-calibration tables and MODBUS firmware. The -40C to +105C rating handles factory-floor thermal stress, and the integrated 48 MHz high-accuracy RC oscillator eliminates external crystals, reducing BOM cost for high-channel-count sensor hubs.
Recommended
Appliance Control Board
The ATSAMC20J17A-ANTS2's 5V-tolerant I/O directly drives triac-control optocouplers, relays, and 5V user-interface keypads found in white goods and HVAC appliance control boards. Its 6 SERCOM channels support simultaneous UART to a Wi-Fi/BLE module, SPI to a TFT display, and I2C to a temperature sensor. The Event System wakes the CPU only on edge-triggered user inputs, achieving standby currents below 5 uA on the 5V rail, which is critical for Energy Star standby budgets on appliances sold in EU and US markets.
Recommended
Building Automation Node
The ATSAMC20J17A-ANTS2 fits BACnet or KNX sensor/actuator nodes with its 48 MHz Cortex-M0+ running protocol stacks, 128 KB Flash accommodating BACnet application layer, and SERCOM channels for RS-485 transceivers. The 5V-tolerant I/O interfaces with legacy building-automation buses without level translation. Hardware Event System off-loads pulse counting (gas/water meters) from the CPU, while the 16-bit TCC generates accurate PWM for HVAC damper control.
Recommended
USB HID Sensor / Data-Logger
The ATSAMC20J17A-ANTS2 integrates a full-speed USB device controller with on-chip transceiver, eliminating an external USB PHY chip for USB HID sensor devices or USB-based data loggers. The 128 KB Flash accommodates USB HID descriptors, command parsers, and a small file system, while 16 KB SRAM buffers logged data before USB transfers. Designers should impedance-match the D+/D- pair to 90 ohms and add ESD protection per the SAM C20 USB layout checklist.
Recommended
Motor Control Co-Processor
The ATSAMC20J17A-ANTS2 works as a co-MCU alongside a dedicated motor-control IC for advanced motor control algorithms: it handles sensor input (Hall, encoder), temperature monitoring, and communication with the main controller via UART or SPI. Its 16-bit TCC modules generate complementary PWM with dead-time insertion for safety-critical control, while the Cortex-M0+ runs field-oriented-control (FOC) observer code within its 48 MHz budget for low-speed BLDC and PMSM applications.
Recommended
Smart Meter Peripheral
The ATSAMC20J17A-ANTS2 supports smart-metering peripherals with its 12-bit ADC for power-quality measurements (RMS voltage, current, frequency) and 6 SERCOM channels for M-Bus, optical port (IEC 62056-21), and DLMS/COSEM communication stacks. The Cortex-M0+ runs metering firmware within 128 KB Flash while the Event System handles tamper detection and wake-on-pulse events. The -40C to +105C range meets outdoor cabinet installations, and standby current below 10 uA extends battery life on battery-backed meters.
Recommended
Consumer Appliance Touch Interface
The ATSAMC20J17A-ANTS2 drives capacitive touch keypads via the PTC (Peripheral Touch Controller) module integrated in the SAM C20 family. With up to 256 touch channels through hardware oversampling, it eliminates mechanical keys in kitchen appliances and washing machines. The 5V-tolerant I/O drives LED indicator rings directly, while SERCOM channels link to the main control MCU. The Cortex-M0+ runs touch-sensing and gesture recognition firmware within 128 KB Flash and 16 KB SRAM.
Recommended
Recommended Products Summary
Engineering reference data for ATSAMC20J17A-ANTS2 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATSAMC20J17A-ANT | ATSAMC20J18A-ANT | ATSAMC20J16A-AUT | ATSAMC20G18A-ANT | ATSAMC20G16A-AUT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-TQFP (10x10 mm) | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same |
| Flash Memory | 128 KB | 128 KB | 256 KB (+100%) | 64 KB (-50%) | 128 KB | 64 KB (-50%) |
| SRAM | 16 KB | 16 KB | 32 KB (+100%) | 8 KB (-50%) | 16 KB | 8 KB (-50%) |
| Core / Frequency | Cortex-M0+ / 48 MHz | Cortex-M0+ / 48 MHz | Cortex-M0+ / 48 MHz | Cortex-M0+ / 48 MHz | Cortex-M0+ / 48 MHz | Cortex-M0+ / 48 MHz |
| Operating Temperature | -40C to +105C | -40C to +85C | -40C to +85C | -40C to +105C | -40C to +85C | -40C to +105C |
| SERCOM Interfaces | 6 | 6 | 6 | 6 | 6 | 6 |
| USB | Full-Speed USB Device | Full-Speed USB Device | Full-Speed USB Device | Full-Speed USB Device | Full-Speed USB Device | Full-Speed USB Device |
Key Differentiators
- Higher upper temperature limit than standard SAM C20 variants (vs ATSAMC20J17A-ANT)
- Half the Flash of the higher-tier variant (vs ATSAMC20J18A-ANT)
- 5V-tolerant I/O without external level shifters (vs ATSAMC20E17A-MUT (QFN package))
Design Notes
Place a 100 nF X7R decoupling capacitor within 3 mm of each VDD pin and a bulk 4.7 uF ceramic on the regulator output. The SAM C20's 5V supply rail tolerates up to 5.5V; for noisy industrial rails, add a ferrite bead and TVS diode (5V SMBJ) to absorb transients. AVDD and VDDCORE require separate filtered nets per the SAM C20 datasheet, even when both sourced from a single 5V regulator.
For USB applications, route the D+/D- differential pair with 90-ohm impedance, maximum length 50 mm, and keep them away from switching signals. The SWD clock (SWCLK) and data (SWDIO) traces must be under 50 mm to ensure reliable debug at 48 MHz. Ground the exposed pad (if using a QFN variant) to a single continuous pour stitched with at least 9 vias for thermal dissipation.
At full 48 MHz activity across all peripherals, the Cortex-M0+ core dissipates approximately 60 mW. The 64-pin TQFP has a thermal resistance around 60 C/W junction-to-ambient, resulting in a 4C temperature rise at room temperature - well within the 105C limit. No heatsink is required for typical industrial installations.
Do not leave the SWD pins floating in production; either tie them to defined logic levels (SWDIO with 10 kOhm pull-up, SWCLK with 10 kOhm pull-down) or disable them in fuses. The internal 48 MHz RC oscillator achieves 0.25% accuracy only after DFLL calibration against a 32.768 kHz crystal; without a low-frequency crystal, accuracy degrades to approximately 2% over temperature.
Estimated: when reading high-impedance sensors through the 12-bit ADC, the ADC sample rate should not exceed 100 kS/s without an external buffer amplifier (e.g. MCP6022) to avoid source-impedance errors. Use the AVDD analog supply pin with a 10 uH inductor plus 100 nF + 10 uF filter network to reject digital switching noise from the rest of the device.
Compliance Information
RoHS and REACH compliant per Microchip product declaration. AEC-Q100 not applicable - this is an industrial-grade MCU; for automotive applications consider ATSAMxA5D4 or dsPIC33 AEC-Q100 qualified families.
