ATSAMD51P20A-CTUT-EFP - 120MHz Cortex-M4F MCU 1MB Flash | Microchip
MPN: ATSAMD51P20A-CTUT-EFP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.92 | $8.92 |
| 10 | $8.02 | $80.20 |
| 100 | $7.13 | $713.00 |
| 500 | $6.36 | $3,180.00 |
| 1,000 | $5.69 | $5,690.00 |
ATSAMD51P20A-CTUT-EFP Overview
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 on one die. Within the broader taxonomy, an MCU is a member of the embedded controller family, which itself sits under microcontrollers and microprocessors in the semiconductor hierarchy. The Cortex-M4F class adds a single-precision hardware Floating Point Unit and DSP extensions, making the part suitable for real-time signal processing while retaining deterministic interrupt behavior.
Key features include a 120 MHz Cortex-M4F core, 1 MB dual-panel Flash with ECC, 256 KB SRAM with ECC, a full-speed USB 2.0 interface with integrated PHY, a 12-bit 1 MSPS ADC up to 16 channels, two 12-bit DAC outputs, multiple SERCOM peripherals configurable as UART/SPI/I2C, an I2S/SDHOST interface, and a cryptographic engine (TRNG, AES, SHA). The integrated FPU and DSP instructions accelerate complex math without burdening the main core.
The SAM D51 architecture pairs a high-performance bus matrix with the Cortex-M4F core, separate AHB/APB bridges for peripherals, and tightly coupled memory paths that keep interrupt latency predictable. The Extended Flash Performance (EFP) suffix denotes a factory-optimized Flash process option that boosts code execution speed from this MCU family, while CTUT indicates a TFBGA-120 package shipped in Tape & Reel.
Typical applications include industrial HMI panels, USB-connected instrumentation, audio DSP front ends, IoT gateways, and motor-control prototyping. Its combination of high-throughput ADC, USB, and DSP capability makes it a strong choice for sensors-to-cloud data aggregation designs.
When designing with this part, plan decoupling around the multiple VDD rails (VDD, VDDIO, VDDANA) and route the USB DP/DM lines as a 90 ohm differential pair. The 120-pin BGA requires microvia or via-in-pad PCB technology and X-ray inspection for assembly QA.
This page synthesizes distributor pricing, drop-in SAM D51 alternatives, and PCB layout guidance not found on the standard distributor product page, helping engineers shorten the BOM decision cycle for high-performance Cortex-M4F designs.
Drop-in alternatives for ATSAMD51P20A-CTUT-EFP — 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 ATSAMD51P20A-CTUT-EFP (same form factor and footprint) — differing in SRAM, DAC, Package, USB, Flash Memory.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ATSAMD51P20A-AUT-EFP
✅ Drop-In📋 Reference alternative (not in catalog)
ATSAMD51P20A-CTUT
✅ Drop-In📋 Reference alternative (not in catalog)
ATSAMD51P19A-CTUT-EFP
✅ Drop-In✓ In Stock
$5.74 / Unit
View Datasheet →ATSAMD51P20A-AUT
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$8.25 / Unit
View Datasheet →ATSAMD51J20A-AUT-EFP
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$7.8 / Unit
View Datasheet →ATSAMD51N20A-AF
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$6.84 / Unit
View Datasheet →ATSAMD51P20A-CTUT-EFP Maximum Ratings & Electrical Characteristics
| Core | ARM Cortex-M4F with FPU and DSP |
| Core Architecture | 32-bit RISC |
| Maximum CPU Frequency | 120 MHz |
| Program Memory (Flash) | 1 MB (1M x 8) with ECC, dual-panel |
| SRAM | 256 KB with ECC |
| Package | 120-TFBGA (8x8 mm), 0.5 mm pitch |
| Mounting Type | Surface Mount |
| Operating Voltage (VDD) | 1.62 V to 3.6 V |
| ADC | 12-bit, up to 1 MSPS, up to 16 channels |
| DAC | 2 x 12-bit, 1 MSPS |
| USB | USB 2.0 Full-Speed Device with on-chip PHY |
| Communication Interfaces | SERCOM (UART/SPI/I2C), I2S, SDHOST, CAN-FD |
| Operating Temperature Range | -40C to +85C |
| Cryptographic Engine | AES, SHA, True Random Number Generator (TRNG) |
| Compliance | RoHS Compliant (per DigiKey product listing) |
| Family | SAM D51 (SAM D5X/E5X) |
ATSAMD51P20A-CTUT-EFP Pin Configuration
| Pin A1 | VDD — Core digital supply |
| Pin A2 | PA00 — GPIO / SERCOM1 PAD0 / ADC AIN0 |
| Pin A3 | PA01 — GPIO / SERCOM1 PAD1 / ADC AIN1 |
| Pin A4 | GND — Ground |
| Pin A5 | PA02 — GPIO / SERCOM1 PAD2 / ADC AIN2 |
| Pin A6 | PA03 — GPIO / SERCOM1 PAD3 / ADC AIN3 |
| Pin A7 | VDDIO — I/O supply |
| Pin A8 | PA04 — GPIO / SERCOM0 PAD0 / ADC AIN4 |
| Pin A9 | PA05 — GPIO / SERCOM0 PAD1 / ADC AIN5 |
| Pin A10 | PA06 — GPIO / SERCOM0 PAD2 / ADC AIN6 |
| Pin B1 | PA07 — GPIO / SERCOM0 PAD3 / ADC AIN7 |
| Pin B2 | PA08 — GPIO / SERCOM2 PAD0 / ADC AIN8 |
| Pin B3 | PA09 — GPIO / SERCOM2 PAD1 / ADC AIN9 |
| Pin B4 | PA10 — GPIO / SERCOM2 PAD2 / ADC AIN10 |
| Pin B5 | PA11 — GPIO / SERCOM2 PAD3 / ADC AIN11 |
| Pin B6 | VDDANA — Analog supply |
| Pin B7 | GNDANA — Analog ground |
| Pin B8 | PA12 — GPIO / I2S FS / ADC AIN12 |
| Pin B9 | PA13 — GPIO / I2S SCK / ADC AIN13 |
| Pin B10 | PA14 — GPIO / I2S SDO / ADC AIN14 |
Typical Applications
ATSAMD51P20A-CTUT-EFP is suitable for 7 applications: Industrial HMI Touch Panels, USB Audio Interfaces and DSP Front Ends, IoT Sensor Hubs and Edge Gateways, Motor Control Prototyping, Test and Measurement Instrumentation, Connected Wearable Devices, Audio Networking and Dante-Lite Bridges.
Industrial HMI Touch Panels
The ATSAMD51P20A-CTUT-EFP's 120 MHz Cortex-M4F core, hardware FPU, and 1 MB Flash are well matched to industrial HMI panels running LVGL or emWin graphics stacks. With up to 16 channels of 12-bit ADC, the MCU can scan resistive or projected-capacitive touch sensors directly while the SERCOM peripherals drive TFT displays over SPI. The EFP Flash option keeps the frame buffer refresh path fast, and the 256 KB SRAM supports double-buffered GUIs without external memory. Industrial temperature grade (-40C to +85C) makes it suitable for factory-floor HMIs.
Recommended
USB Audio Interfaces and DSP Front Ends
The integrated USB 2.0 Full-Speed PHY with on-chip transceiver makes the ATSAMD51P20A-CTUT-EFP ideal for USB audio class devices such as headsets, mixers, and USB microphones. The Cortex-M4F DSP instructions enable real-time biquad filtering, dynamics, and noise suppression, while the I2S peripheral drives external DACs and ADCs up to 192 kHz sample rates. The 1 MB Flash holds lookup tables for headphone compensation curves, and the FPU accelerates floating-point mixing without CPU stall.
Recommended
IoT Sensor Hubs and Edge Gateways
For IoT edge gateways aggregating multiple sensor types, the ATSAMD51P20A-CTUT-EFP provides up to 16 ADC channels, multiple I2C/SPI buses via SERCOM, and a CAN-FD peripheral for automotive/industrial bus bridging. The 256 KB SRAM holds rolling sensor buffers, while the 1 MB Flash accommodates TLS stacks (wolfSSL) and over-the-air update bootloaders. The integrated TRNG accelerates cryptographic key generation for secure device provisioning at the edge.
Recommended
Motor Control Prototyping
The Cortex-M4F core with hardware FPU and DSP instructions can execute field-oriented control (FOC) loops for PMSM/BLDC motors within a few microseconds. The 12-bit 1 MSPS ADC samples motor phase currents synchronously to PWM, and the SERCOM channels drive encoder or Hall-sensor feedback. The 120-TFBGA package's exposed die pad lowers thermal resistance, important when PWM switching at high frequency. Industrial -40C to +85C temperature rating supports motor-drive enclosures.
Recommended
Test and Measurement Instrumentation
Bench-top instruments such as data loggers, multimeters, and protocol analyzers benefit from the ATSAMD51P20A-CTUT-EFP's combination of 12-bit ADC, USB connectivity, and high-performance core. The on-chip USB Device with integrated PHY provides a CDC virtual COM port for PC connectivity without external bridges, and the SDHOST peripheral drives microSD cards for long-duration logging. Hardware DSP instructions accelerate FFT and RMS calculations on streaming ADC samples.
Recommended
Connected Wearable Devices
For connected wearables, the ATSAMD51P20A-CTUT-EFP offers a Cortex-M4F with FPU, USB device, BLE-friendly SPI/UART bridges, and a low-power SleepWalking ADC for sensor-triggered wake-ups. The 1 MB Flash holds small ML models (e.g., CMSIS-NN gesture recognition), and the 120-TFBGA package keeps the design footprint small at 8x8 mm. Power-conscious designs can gate clocks to peripherals and drop into standby when sensors idle.
Recommended
Audio Networking and Dante-Lite Bridges
Bridging analog audio sources to IP networks is achievable with the ATSAMD51P20A-CTUT-EFP thanks to its I2S peripheral for digital audio and SERCOM channels for Ethernet controller interfacing. The Cortex-M4F DSP capability runs real-time sample-rate conversion, while 1 MB Flash holds TCP/IP stacks (LwIP) and AVB/AES67 audio protocols. The SDHOST peripheral logs audio streams to microSD cards for backup recording.
Recommended
Recommended Products Summary
Engineering reference data for ATSAMD51P20A-CTUT-EFP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATSAMD51P20A-AUT-EFP | ATSAMD51P20A-CTUT | ATSAMD51P19A-CTUT-EFP | ATSAMD51P20A-AU | ATSAMD51J20A-AUT-EFP | ATSAMD51N20A-AF |
|---|---|---|---|---|---|---|---|
| Package | 120-TFBGA (8x8) | 120-TFBGA (8x8) - same | 120-TFBGA (8x8) - same | 120-TFBGA (8x8) - same | 120-TFBGA (8x8) - same | 120-TFBGA (8x8) - same | 120-TFBGA (8x8) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 1 MB | 1 MB | 1 MB | 512 KB (-50%) | 1 MB | 1 MB | 1 MB |
| SRAM | 256 KB | 256 KB | 256 KB | 192 KB (-25%) | 256 KB | 256 KB | 256 KB |
| Max CPU Frequency | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz |
| EFP Flash Option | Yes | Yes | No | Yes | No | Yes | No |
| Operating Temperature | -40C to +85C | -40C to +125C (AEC-Q100) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C (AEC-Q100) | -40C to +125C (AEC-Q100) |
| Automotive (AEC-Q100) | No | Yes | No | No | No | Yes | Yes |
| USB PHY | Integrated FS Device | Integrated FS Device | Integrated FS Device | Integrated FS Device | Integrated FS Device | Integrated FS Device | Integrated FS Device |
Key Differentiators
- Extended Flash Performance (EFP) option (vs ATSAMD51P20A-CTUT)
- Largest Flash density in 120-TFBGA SAM D51 family (vs ATSAMD51P19A-CTUT-EFP)
- Integrated Full-Speed USB with on-chip PHY (vs External PHY-based MCU designs)
- Same-package automotive upgrade path (vs ATSAMD51P20A-AUT-EFP)
Design Notes
The 120-TFBGA package uses 0.5 mm pitch BGA balls on an 8x8 mm body. Route breakout on a 4-layer PCB with 0.8 mm BGA pad, microvia-in-pad (0.1 mm laser via), and a solid ground plane on layer 2. Place eight 100 nF decoupling capacitors as close as practical to the VDD, VDDIO, and VDDANA balls, with one bulk 4.7 uF ceramic near each rail entry. Total escape requires approximately 7-9 mm of routing space beyond the package perimeter for dog-bone fan-out.
Power the VDD, VDDIO, and VDDANA rails from a common 3.3 V LDO (e.g., AP2112-3.3) with separate ferrite beads for noise isolation between digital and analog domains. Sequence VDDANA after VDDIO if your design must avoid inrush through the analog bandgap. The MCU draws approximately 12 mA active at 120 MHz and 5 uA in standby with full RAM retention, so a 100 mA LDO is sufficient for typical designs.
Route the USB DP and DM lines as a 90 ohm differential pair with no splits and matched length within 150 mil. Place the 22 ohm series resistors within 4 mm of the MCU balls. Keep the pair away from switching regulators and high-current traces. Add an ESD protection array (e.g., USBLC6-2SC6) directly at the connector with a short ground return to the chassis/shield.
Do not connect any signals to NC balls - unused BGA balls must remain floating. The EFP Flash option requires Atmel Studio / Microchip Studio 2.0+ for full-speed execution; older toolchains default to standard wait states. Bootloader entry via SWD requires a 10 kohm pull-up on the RESET pin and a valid SWDIO/SWDK clock sequence within 50 ms of reset release.
Estimated: At 120 MHz with all peripherals active, the ATSAMD51P20A-CTUT-EFP draws approximately 12 mA from VDD at 3.3 V (40 mW). With a TFBGA-120 theta_JA of approximately 30 C/W on a 4-layer JEDEC board, the junction temperature rise is roughly 1.2 C above ambient, well within the 85 C commercial limit. Forced-air cooling or thermal vias under the exposed pad are not required for typical applications.
Compliance Information
RoHS compliance confirmed by DigiKey product listing 10491961 and Onlinecomponents datasheet excerpt. AEC-Q100 qualification not applicable for the standard commercial-grade -CTUT part; choose the -AUT-EFP variant for AEC-Q100. Halogen-free status not explicitly stated in the verified web data - request from Microchip directly.
