ATSAMD51P19A-CTFT - 120MHz Cortex-M4F MCU 512KB | Microchip
MPN: ATSAMD51P19A-CTFT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $11.42 | $11.42 |
| 10 | $10.27 | $102.70 |
| 100 | $8.74 | $874.00 |
| 500 | $7.62 | $3,810.00 |
| 1,000 | $6.85 | $6,850.00 |
ATSAMD51P19A-CTFT Overview
A microcontroller (MCU) is an integrated circuit that combines a processor core, program and data memory, peripherals, and I/O on a single die. The Cortex-M4F class represents ARM's mainstream performance tier with DSP extensions and a hardware FPU, sitting between the Cortex-M3 (no FPU) and Cortex-M7 (higher performance) in ARM's hierarchy. Microcontrollers in this class are positioned within the broader category: 32-bit MCU -> ARM Cortex-M -> microcontroller -> semiconductor IC -> embedded system. The SAM D51 family integrates up to 1 MB Flash, up to 256 KB SRAM, a high-speed USB 2.0 interface, multiple SERCOM channels, I2S, CAN-FD, and an on-chip 12-bit ADC, making it suitable for connected industrial, audio, and HMI designs.
Key features of the ATSAMD51P19A-CTFT include 512 KB Flash, 192 KB SRAM, a 120 MHz maximum CPU clock, USB 2.0 Full-Speed with integrated PHY, a 12-bit 1 MSPS ADC with up to 16 channels, two 12-bit DACs, multiple SERCOM peripherals configurable as UART/SPI/I2C, and an Event System for inter-peripheral signaling without CPU overhead. The integrated FPU enables single-cycle floating-point MAC operations, while the DSP extensions deliver SIMD-style signal processing acceleration.
From a technical depth perspective, the SAM D51 uses a 65 nm low-power CMOS process and integrates a 4 KB instruction cache plus a tightly-coupled memory (TCM) interface, which reduces Flash access latency for time-critical loops. Hardware cryptographic accelerators (AES, SHA, and GCM) and a true random number generator (TRNG) support secure boot and TLS-style stacks. The 120-pin TFBGA exposes the full peripheral set, including parallel capture for camera interfaces and a high-bandwidth QSPI for external memory expansion.
Typical applications for the ATSAMD51P19A-CTFT include USB-audio interfaces, industrial HMI panels with touch sensing, IoT edge nodes with on-chip crypto, motor control drives with FOC firmware, and portable medical devices needing low-power DSP. The 8x8 mm TFBGA package supports compact, high-density board layouts where thermal and routing headroom is constrained.
When designing with this part, observe the 1.71 V to 3.63 V supply range and ensure decoupling per the datasheet recommended layout. The TFBGA requires microvia or via-in-pad PCB processes for reliable assembly - confirm with your CM before committing to layout. The on-chip regulator must be configured to the correct low-power mode at startup; consult the Atmel Start / MPLAB Harmony configuration files for validated defaults.
This page synthesizes verified distributor pricing, drop-in alternatives, and design notes not aggregated on a single manufacturer page, giving procurement and design engineers a faster path from datasheet to prototype.
Drop-in alternatives for ATSAMD51P19A-CTFT — 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 ATSAMD51P19A-CTFT (same form factor and footprint) — differing in Core Architecture, Mounting Type, ADC, DAC, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ATSAMD51P19A-CFFT
✅ Drop-In📋 Reference alternative (not in catalog)
ATSAMD51P20A-CTFT
✅ Drop-In✓ In Stock
$5.2 / Unit
View Datasheet →ATSAMD51P19A-CTFT Maximum Ratings & Electrical Characteristics
| Core Architecture | ARM Cortex-M4F with FPU |
| CPU Core Count | 1 |
| Maximum CPU Clock | 120 MHz |
| Program Memory (Flash) | 512 KB (512K x 8) |
| SRAM | 192 KB |
| Flash ECC Support | Yes (dual-panel Flash with ECC) |
| Operating Voltage (Vcc/Vdd) | 1.71 V to 3.63 V |
| USB Interface | USB 2.0 Full-Speed with integrated PHY |
| ADC | 12-bit, up to 16 channels, 1 MSPS |
| DAC | Two 12-bit DAC outputs |
| SERCOM (UART/SPI/I2C) | Multiple configurable SERCOM channels |
| Package Type | 120-pin TFBGA (8x8x1.2 mm) |
| Mounting Type | Surface Mount (BGA) |
| Operating Temperature | -40C to +125C (Extended Temperature) |
| RoHS Status | Compliant |
ATSAMD51P19A-CTFT 120-pin tfbga (8x8x1.2 mm) Pin Configuration Guide
Pin configuration for ATSAMD51P19A-CTFT (120-pin tfbga (8x8x1.2 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 ATSAMD51P19A-CTFT.
Refer to the datasheet for full pin configuration.
Typical Applications
ATSAMD51P19A-CTFT is suitable for 7 applications: USB Audio Interface (DAC/Headphone Amplifier), Industrial HMI Touch Panel Controller, IoT Edge Node with On-Chip Cryptography, Brushless DC Motor Control (FOC Algorithm), Portable Medical Monitoring Device, USB-Connected Data Acquisition Module, Smart Sensor Hub with Edge DSP.
USB Audio Interface (DAC/Headphone Amplifier)
The ATSAMD51P19A-CTFT is a strong fit for USB audio applications because it integrates a USB 2.0 Full-Speed PHY, two 12-bit DAC channels, I2S peripherals, and 192 KB SRAM - enough to run USB Audio Class 1.0 firmware plus small-scale buffering. The 120 MHz Cortex-M4F with FPU handles biquad filtering and sample-rate conversion without consuming real-time headroom. Placed between the USB Type-C connector and an external low-jitter clock, it acts as the audio stream processor while passing I2S to a dedicated headphone DAC. The 120-pin TFBGA exposes the full peripheral set including I2S and QSPI for external Flash, in an 8x8 mm footprint suitable for portable audio dongles.
Recommended
Industrial HMI Touch Panel Controller
The ATSAMD51P19A-CTFT suits industrial HMI panels because its 16-channel 12-bit ADC supports multiple analog touch-sensing electrodes, the parallel capture interface drives TFT displays up to WVGA resolution, and the 120 MHz core runs LVGL or emWin graphics stacks comfortably. The 512 KB Flash holds UI assets and font tables while 192 KB SRAM manages frame buffers. Operating from -40C to +125C, it tolerates factory-floor temperature swings, and the on-chip Event System coordinates touch interrupts with display refresh without CPU intervention. The 120-pin TFBGA keeps the controller section compact under the LCD module.
Recommended
IoT Edge Node with On-Chip Cryptography
The ATSAMD51P19A-CTFT is well-suited for IoT edge nodes because it integrates hardware AES, SHA, GCM, and a true random number generator (TRNG), enabling secure boot and TLS-style transport security without external crypto chips. The 120 MHz Cortex-M4F handles MQTT, CoAP, or HTTPS protocols on top of Wi-Fi or BLE co-processors, while the 192 KB SRAM maintains TCP/IP stacks. The SERCOM peripherals flexibly map to UART, SPI, or I2C for sensor hubs and radio modules, and the wide 1.71 V to 3.63 V supply range simplifies battery and energy-harvest designs. The TFBGA-120 allows dense routing for multi-radio boards.
Recommended
Brushless DC Motor Control (FOC Algorithm)
The ATSAMD51P19A-CTFT is a strong fit for sensorless or Hall-sensored brushless DC motor control because the Cortex-M4F with FPU and DSP extensions runs Field-Oriented Control (FOC) and Space Vector Modulation (SVM) loops within tight cycle budgets. The on-chip 12-bit ADC with hardware oversampling captures phase currents, while multiple TC (Timer/Counter) channels generate complementary PWM with dead-time insertion. The 192 KB SRAM stores the FOC state structure and controller history, and the 120 MHz clock allows PWM frequencies above 30 kHz without sacrificing current-loop bandwidth. Operating from 1.71 V to 3.63 V supports 3.3 V motor-driver rails.
Recommended
Portable Medical Monitoring Device
The ATSAMD51P19A-CTFT suits portable medical devices because the low-power SleepWalking peripherals and on-chip RTC allow deep-sleep currents below 50 uA while still sampling at scheduled intervals. The 16-channel 12-bit ADC digitizes SpO2, ECG, or temperature sensor signals with 1 MSPS throughput, and the FPU accelerates FFT-based heart-rate variability analysis. Hardware AES plus TRNG support authenticated firmware updates required by FDA cyber guidance. The extended -40C to +125C operating temperature ensures reliability across clinical and home-care environments, and the small 8x8 mm TFBGA keeps the wearable form factor minimal.
Recommended
USB-Connected Data Acquisition Module
The ATSAMD51P19A-CTFT is an excellent fit for USB-tethered data acquisition modules because the integrated USB Full-Speed PHY streams samples to a host PC without an external bridge chip. The 12-bit ADC with up to 16 channels multiplexes analog inputs, the SERCOM peripherals add UART or SPI pass-through channels, and the 192 KB SRAM acts as a high-speed sample buffer. The 120 MHz Cortex-M4F can run on-the-fly RMS, FFT, or moving-average preprocessing before forwarding over USB bulk transfers. The wide supply range allows operation from USB bus power or external 5 V rails.
Recommended
Smart Sensor Hub with Edge DSP
The ATSAMD51P19A-CTFT is well-matched for smart sensor hubs because the 120 MHz Cortex-M4F with DSP instructions executes vibration analysis, anomaly detection, and predictive-maintenance algorithms directly on the node, reducing uplink bandwidth. The integrated 12-bit ADC samples accelerometer and strain-gauge signals, multiple SERCOM interfaces connect to MEMS sensors, and the 512 KB Flash stores model coefficients and reference templates. The hardware AES secures telemetry, and the wide operating temperature makes the part suitable for industrial machinery nodes. The TFBGA-120 footprint supports compact board designs co-located with sensors.
Recommended
Recommended Products Summary
Engineering reference data for ATSAMD51P19A-CTFT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATSAMD51P19A-CFFT | ATSAMD51P20A-CTFT | ATSAMD51P19A-AFT | ATSAMD51N19A-AFT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 120-TFBGA (8x8 mm) | 120-TFBGA (8x8 mm) - same | 120-TFBGA (8x8 mm) - same | 100-TQFP (14x14 mm) - different | 100-TQFP (14x14 mm) - different |
| Core | ARM Cortex-M4F @ 120 MHz | ARM Cortex-M4F @ 120 MHz | ARM Cortex-M4F @ 120 MHz | ARM Cortex-M4F @ 120 MHz | ARM Cortex-M4F @ 120 MHz |
| Flash Memory | 512 KB | 512 KB - same | 1 MB - +100% | 512 KB - same | 512 KB - same |
| SRAM | 192 KB | 192 KB - same | 256 KB | 192 KB - same | 192 KB - same |
| USB Interface | USB 2.0 Full-Speed | USB 2.0 Full-Speed | USB 2.0 Full-Speed + HS | USB 2.0 Full-Speed | USB 2.0 Full-Speed |
| Operating Temperature | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C | -40C to +125C |
| RoHS Compliance | Compliant | Compliant | Compliant | Compliant | Compliant |
Key Differentiators
- Integrated USB 2.0 Full-Speed PHY eliminates external bridge chip (vs PIC32MX MCUs without integrated USB PHY)
- Dual-panel Flash with ECC for live firmware updates (vs Single-bank Flash MCUs (e.g., PIC16F series))
- Hardware FPU with DSP extensions at 120 MHz (vs Cortex-M0+ MCUs at similar MHz)
Design Notes
The ATSAMD51P19A-CTFT uses a 120-ball TFBGA with 0.5 mm pitch, which typically requires microvia PCB fabrication and via-in-pad assembly. Confirm your contract manufacturer supports BGA assembly with appropriate solder paste stencils (laser-cut, 100-125 um thickness). Place at least four GND vias in the center ball grid array for thermal relief, and add stitching vias around the periphery to reduce ground bounce. Match the datasheet land pattern (NSMD preferred for 0.5 mm BGA) within 25 um tolerance to avoid solder joint defects during reflow.
The ATSAMD51P19A-CTFT requires a stable 1.71 V to 3.63 V supply on VDDIO, with VDDIN typically tied to the same rail via a ferrite bead. Place a 4.7 uF + 100 nF decoupling pair near each VDDIO/VDDIN pin pair, plus a bulk 10 uF close to the regulator output. The internal voltage regulator (DECOUPLE pin) needs a 1 uF low-ESR capacitor; using a higher-ESR capacitor may cause the regulator to oscillate. Verify the supply ramp time stays within the 0.1 ms to 10 ms window to avoid BOR events during power-on.
Do not confuse the ATSAMD51P19A-CTFT with the SAM D51N or SAM D51J sub-families - the J variant has different peripheral counts and pinout despite the same family name. Always cross-check the full part number suffix (CTFT = 120 TFBGA, extended temp, T&R) against the Microchip ordering code. Also note that the CTFT suffix does NOT guarantee AEC-Q100 qualification; for automotive, request the AEC-Q100 variant explicitly. Configuration bits in NVMUSERROW must be programmed for correct oscillator and brown-out behavior; rely on MPLAB Harmony or Atmel Start defaults rather than manual NVM writes.
When routing high-speed USB signals on the ATSAMD51P19A-CTFT, maintain 90 ohm differential impedance on D+/D- traces with length matching within 150 mil. Place the USB common-mode choke within 5 mm of the connector and add ESD protection (such as USBLC6-2SC6) at the connector side. For QSPI memory interfaces running at 60 MHz+, use series damping resistors on data lines and avoid via stubs by placing vias at the device pads only. The parallel capture interface (PCK) for camera inputs must be length-matched across the 8-bit data bus to within 50 mil to avoid setup/hold violations at 48 MHz pixel clock.
Compliance Information
RoHS compliant per distributor listings. Standard -CTFT suffix is industrial extended-temperature, NOT AEC-Q100 qualified - request the AEC-Q100 automotive variant for vehicle applications. Microchip product longevity program covers SAM D51 family.
