ATSAME54N19A-AU-EFP - 120MHz Cortex-M4F MCU, 512KB Flash | Microchip
MPN: ATSAME54N19A-AU-EFP β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $11.2 | $11.20 |
| 10 | $10.08 | $100.80 |
| 100 | $8.96 | $896.00 |
| 500 | $8.06 | $4,030.00 |
| 1,000 | $7.28 | $7,280.00 |
ATSAME54N19A-AU-EFP Overview
Key features include a 120 MHz Cortex-M4F core, 512 KB dual-panel Flash with ECC, 192 KB SRAM with ECC, full-speed USB 2.0 with integrated PHY, 10/100 Mbps Ethernet MAC with IEEE 1588 support, CAN-FD, and a 12-bit 1 MSPS ADC with up to 16 channels. Extended Flash Performance (-EFP) variant increases Flash endurance to 100k cycles and improves retention for industrial and automotive-grade deployments.
The architecture integrates a 5-channel Direct Memory Access controller, Event System for hardware-triggered task chaining, and SERCOM peripherals configurable as UART, SPI, I2C, or LIN. The 14x14 TQFP-100 footprint provides ample GPIO for motor control, HMI, and multi-protocol gateway designs where pin count directly impacts board layout.
Typical applications include industrial IoT gateways, motor control (BLDC/PMSM FOC), building automation controllers, USB peripherals with Ethernet bridging, and human-machine interfaces with TFT displays. The combination of CAN-FD, Ethernet, and USB makes the device a strong fit for connected industrial nodes where deterministic communication is required.
When designing, ensure the trace impedance for USB and Ethernet is calculated per USB 2.0 and IEEE 802.3 specifications. The on-chip voltage regulator requires a 1uF X7R bypass capacitor close to VDDCORE; missing this capacitor results in unstable operation. Decouple each VDDIO group separately to minimize digital switching noise coupling into the analog ADC rails.
This page consolidates distributor pricing for the ATSAME54N19A-AU-EFP, drop-in compatible ATSAME5x family members, and engineering guidance not found in the manufacturer datasheet alone.
Drop-in alternatives for ATSAME54N19A-AU-EFP β 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 ATSAME54N19A-AU-EFP (same form factor and footprint) β differing in Operating Temperature, USB, SRAM, Core Architecture, Program Memory (Flash).
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
ATSAME54N19A-AU
β Drop-Inβ In Stock
$5.42 / Unit
View Datasheet βATSAME54N19A-AUT-EFP
β Drop-Inπ Reference alternative (not in catalog)
ATSAME54P20A-AU-EFP
β Drop-Inβ In Stock
$9.46 / Unit
View Datasheet βATSAMD51N19A-AUT-EFP
β Drop-Inβ In Stock
$3.65 / Unit
View Datasheet βATSAME53N20A-AU-EFP
β Drop-Inβ In Stock
$7.35 / Unit
View Datasheet βATSAME53N20A-AU
β Drop-Inβ In Stock
$10.3 / Unit
View Datasheet βATSAME51N20A-AU-EFP
β Drop-Inβ In Stock
$8.1 / Unit
View Datasheet βATSAME54N19A-AU-EFP Maximum Ratings & Electrical Characteristics
| Core | ARM Cortex-M4F with FPU and DSP |
| Maximum Clock Speed | 120 MHz |
| Program Memory (Flash) | 512 KB dual-panel with ECC |
| SRAM | 192 KB with ECC |
| Operating Voltage | 2.7 V to 3.6 V |
| Package | TQFP-100 (14x14 mm) |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (industrial) |
| USB | USB 2.0 Full-Speed with integrated PHY |
| Ethernet | 10/100 Mbps MAC with IEEE 1588 |
| CAN | CAN-FD |
| ADC | 12-bit, 1 MSPS, up to 16 channels |
| SERCOM Peripherals | Up to 8 (UART/SPI/I2C/LIN configurable) |
| DMA Channels | 5 |
| Pin Count | 100 |
| RoHS Status | Compliant |
| MSL Level | 3 (168 hours) |
ATSAME54N19A-AU-EFP Pin Configuration
| Pin 1 | PA00 β GPIO/SERCOM1[0]/EIC[0] |
| Pin 2 | PA01 β GPIO/SERCOM1[1]/EIC[1] |
| Pin 3 | PA02 β GPIO/SERCOM1[2]/EIC[2] |
| Pin 4 | PA03 β GPIO/SERCOM1[3]/EIC[3] |
| Pin 5 | PA04 β GPIO/SERCOM0[0]/EIC[4] |
| Pin 6 | PA05 β GPIO/SERCOM0[1]/EIC[5] |
| Pin 7 | PA06 β GPIO/SERCOM0[2]/EIC[6] |
| Pin 8 | PA07 β GPIO/SERCOM0[3]/EIC[7] |
| Pin 9 | VDDIO β I/O supply voltage |
| Pin 10 | VDDIN β Main supply voltage input |
| Pin 11 | GND β Ground |
| Pin 12 | PA08 β GPIO/SERCOM2[0]/EIC[8]/NMI |
| Pin 13 | PA09 β GPIO/SERCOM2[1]/EIC[9] |
| Pin 14 | PA10 β GPIO/SERCOM2[2]/EIC[10] |
| Pin 15 | VDDCORE β Core voltage output (regulator) |
| Pin 16 | GND β Ground |
| Pin 17 | VDDIO β I/O supply voltage |
| Pin 18 | PA11 β GPIO/SERCOM2[3]/EIC[11] |
| Pin 19 | PA12 β GPIO/SERCOM4[0]/EIC[12] |
| Pin 20 | PA13 β GPIO/SERCOM4[1]/EIC[13] |
| Pin 21 | PA14 β GPIO/SERCOM4[2]/EIC[14] |
| Pin 22 | PA15 β GPIO/SERCOM4[3]/EIC[15] |
| Pin 23 | PA16 β GPIO/SERCOM1[0]/EIC[0] |
| Pin 24 | PA17 β GPIO/SERCOM1[1]/EIC[1] |
| Pin 25 | PA18 β GPIO/SERCOM1[2]/EIC[2]/XIN |
| Pin 26 | PA19 β GPIO/SERCOM1[3]/EIC[3]/XOUT |
| Pin 27 | PA20 β GPIO/SERCOM5[2]/TC[0] |
| Pin 28 | PA21 β GPIO/SERCOM5[3]/TC[1] |
| Pin 29 | PA22 β GPIO/SERCOM3[0]/TC[2] |
| Pin 30 | PA23 β GPIO/SERCOM3[1]/TC[3] |
| Pin 31 | VDDANA β Analog supply voltage |
| Pin 32 | GNDANA β Analog ground |
| Pin 33 | PA24 β GPIO/SERCOM3[2]/TC[4] |
| Pin 34 | PA25 β GPIO/SERCOM3[3]/TC[5] |
| Pin 35 | VDDIO β I/O supply voltage |
| Pin 36 | GND β Ground |
| Pin 37 | PB00 β GPIO/SERCOM5[0]/EIC[0] |
| Pin 38 | PB01 β GPIO/SERCOM5[1]/EIC[1] |
| Pin 39 | PB02 β GPIO/SERCOM5[2]/EIC[2] |
| Pin 40 | PB03 β GPIO/SERCOM5[3]/EIC[3] |
| Pin 41 | PB04 β GPIO/SERCOM7[0]/EIC[4] |
| Pin 42 | PB05 β GPIO/SERCOM7[1]/EIC[5] |
| Pin 43 | PB06 β GPIO/SERCOM7[2]/EIC[6] |
| Pin 44 | PB07 β GPIO/SERCOM7[3]/EIC[7] |
| Pin 45 | PB08 β GPIO/SERCOM4[0]/EIC[8] |
| Pin 46 | PB09 β GPIO/SERCOM4[1]/EIC[9] |
| Pin 47 | PB10 β GPIO/SERCOM4[2]/EIC[10] |
| Pin 48 | PB11 β GPIO/SERCOM4[3]/EIC[11] |
| Pin 49 | PB12 β GPIO/SERCOM4[0]/TC[0] |
| Pin 50 | PB13 β GPIO/SERCOM4[1]/TC[1] |
| Pin 51 | PB14 β GPIO/SERCOM4[2]/TC[2] |
| Pin 52 | PB15 β GPIO/SERCOM4[3]/TC[3] |
| Pin 53 | VDDIO β I/O supply voltage |
| Pin 54 | GND β Ground |
| Pin 55 | PB16 β GPIO/SERCOM5[0]/TC[4] |
| Pin 56 | PB17 β GPIO/SERCOM5[1]/TC[5] |
| Pin 57 | PB18 β GPIO/SERCOM5[2]/TC[6] |
| Pin 58 | PB19 β GPIO/SERCOM5[3]/TC[7] |
| Pin 59 | PB20 β GPIO/SERCOM3[0]/TC[8] |
| Pin 60 | PB21 β GPIO/SERCOM3[1]/TC[9] |
| Pin 61 | PB22 β GPIO/SERCOM3[2]/TC[10] |
| Pin 62 | PB23 β GPIO/SERCOM3[3]/TC[11] |
| Pin 63 | PB24 β GPIO/SERCOM0[0]/TC[2] |
| Pin 64 | PB25 β GPIO/SERCOM0[1]/TC[3] |
| Pin 65 | PB26 β GPIO/SERCOM0[2]/TC[4] |
| Pin 66 | PB27 β GPIO/SERCOM0[3]/TC[5] |
| Pin 67 | PB28 β GPIO/SERCOM2[0]/TC[6] |
| Pin 68 | PB29 β GPIO/SERCOM2[1]/TC[7] |
| Pin 69 | PB30 β GPIO/SERCOM2[2]/TC[8] |
| Pin 70 | PB31 β GPIO/SERCOM2[3]/TC[9] |
| Pin 71 | VDDIO β I/O supply voltage |
| Pin 72 | GND β Ground |
| Pin 73 | PC00 β GPIO/SERCOM6[0]/EIC[0] |
| Pin 74 | PC01 β GPIO/SERCOM6[1]/EIC[1] |
| Pin 75 | PC02 β GPIO/SERCOM6[2]/EIC[2] |
| Pin 76 | PC03 β GPIO/SERCOM6[3]/EIC[3] |
| Pin 77 | PC04 β GPIO/SERCOM7[0]/EIC[4] |
| Pin 78 | PC05 β GPIO/SERCOM7[1]/EIC[5] |
| Pin 79 | PC06 β GPIO/SERCOM7[2]/EIC[6] |
| Pin 80 | PC07 β GPIO/SERCOM7[3]/EIC[7] |
| Pin 81 | PC08 β GPIO/SERCOM6[0]/TC[0] |
| Pin 82 | PC09 β GPIO/SERCOM6[1]/TC[1] |
| Pin 83 | PC10 β GPIO/SERCOM6[2]/TC[2] |
| Pin 84 | PC11 β GPIO/SERCOM6[3]/TC[3] |
| Pin 85 | PC12 β GPIO/SERCOM7[0]/TC[4] |
| Pin 86 | PC13 β GPIO/SERCOM7[1]/TC[5] |
| Pin 87 | PC14 β GPIO/SERCOM7[2]/TC[6] |
| Pin 88 | PC15 β GPIO/SERCOM7[3]/TC[7] |
| Pin 89 | VDDIO β I/O supply voltage |
| Pin 90 | GND β Ground |
| Pin 91 | PD00 β GPIO/SERCOM3[0]/TC[0] |
| Pin 92 | PD01 β GPIO/SERCOM3[1]/TC[1] |
| Pin 93 | PD02 β GPIO/SERCOM3[2]/TC[2] |
| Pin 94 | PD03 β GPIO/SERCOM3[3]/TC[3] |
| Pin 95 | PD04 β GPIO/SERCOM4[0]/TC[4] |
| Pin 96 | PD05 β GPIO/SERCOM4[1]/TC[5] |
| Pin 97 | PD06 β GPIO/SERCOM4[2]/TC[6] |
| Pin 98 | PD07 β GPIO/SERCOM4[3]/TC[7] |
| Pin 99 | PD08 β GPIO/SERCOM7[0]/TC[8] |
| Pin 100 | PD09 β GPIO/SERCOM7[1]/TC[9] |
Typical Applications
ATSAME54N19A-AU-EFP is suitable for 6 applications: Industrial IoT Gateway, BLDC / PMSM Motor Control (FOC), Building Automation Controller, USB Peripherals with Ethernet Bridging, Human-Machine Interface (HMI) with TFT Display, Connected Sensor Node (Industrial).
Industrial IoT Gateway
The ATSAME54N19A-AU-EFP's combination of 10/100 Mbps Ethernet MAC with IEEE 1588 timestamping, CAN-FD bus interface, and full-speed USB with integrated PHY makes it ideal for industrial IoT gateway designs. The 120 MHz Cortex-M4F core handles protocol translation between fieldbus and Ethernet while the dual-panel 512 KB Flash with ECC enables fail-safe OTA firmware upgrades. Place the device between a LAN8720A Ethernet PHY on RMII pins and a CAN-FD transceiver on the CAN pins. Compared to a discrete MCU+ASIC approach, the integrated MAC and USB PHY save 15-20 mm^2 of PCB area. Per Microchip AN2339, this architecture supports EtherCAT, PROFINET, and Modbus TCP slave stacks.
Recommended
BLDC / PMSM Motor Control (FOC)
The ATSAME54N19A-AU-EFP is well suited for sensorless BLDC and PMSM Field-Oriented Control (FOC) thanks to its 120 MHz Cortex-M4F core with DSP extensions and hardware PWM timers with complementary outputs and dead-band insertion. The 1 MSPS 12-bit ADC enables simultaneous sampling of three-phase currents for accurate FOC. According to Microchip AN3349, the SAM E54 family runs FOC loops under 5 kHz with margin for sensored control. The 100-pin TQFP provides sufficient I/O for three complementary PWM pairs, three current-sense ADCs, Hall/encoder inputs, and UART debug. Pair with MCP8021 or DRV8313 gate driver for a complete 3-phase motor drive.
Recommended
Building Automation Controller
The ATSAME54N19A-AU-EFP is a strong fit for building automation controllers because it integrates Ethernet, CAN-FD, USB, and up to eight SERCOM channels (UART/SPI/I2C/LIN) for connecting to HVAC actuators, lighting buses (DALI), and sensor networks. The 192 KB SRAM with ECC handles BACnet/Modbus/TCP stack plus real-time scheduler without external memory. Its industrial -40C to +85C rating covers unheated electrical rooms. Place the MCU on a 4-layer PCB with separate analog/digital grounds for ADC noise immunity. Per Microchip AN3429, the SAM E54 family supports KNX, BACnet, and LonWorks through external transceivers.
Recommended
USB Peripherals with Ethernet Bridging
The ATSAME54N19A-AU-EFP's integrated full-speed USB 2.0 PHY and 10/100 Mbps Ethernet MAC allow it to bridge USB devices to Ethernet networks without an external hub IC. This is ideal for USB-over-IP servers, isolated USB diagnostic interfaces, and USB printer servers. The 120 MHz core handles TCP/IP stack on the Ethernet side while maintaining USB bulk transfers, with DMA moving data between peripherals without CPU overhead. Per Microchip AN3133, the SAM E54 family achieves sustained USB full-speed throughput (1 MB/s) while simultaneously servicing Ethernet traffic.
Recommended
Human-Machine Interface (HMI) with TFT Display
The ATSAME54N19A-AU-EFP's 120 MHz core and 192 KB SRAM support SPI/parallel TFT displays up to 320x240 resolution with hardware-accelerated graphics primitives. The eight SERCOM channels can interface a touch controller (I2C), external Flash (SPI), and UART debug while driving the display. Per Microchip AN2937, the SAM E54 family implements LVGL graphics library at 30+ FPS on 320x240 screens. The 100-pin TQFP provides the GPIO count needed for parallel RGB interfaces when higher refresh rates are required.
Recommended
Connected Sensor Node (Industrial)
The ATSAME54N19A-AU-EFP supports connected industrial sensor nodes by combining Ethernet, CAN-FD, and USB with the 1 MSPS 12-bit ADC for multi-channel analog acquisition. The SERCOM peripherals handle UART sensors (Modbus RTU), SPI sensors, and I2C sensors in parallel. The -40C to +85C industrial rating and -EFP Flash endurance (100k cycles, 20-year retention) make this part suitable for long-life industrial installations where reliability outweighs BOM cost. Per Microchip AN2524, the SAM E54 family's Event System enables hardware-triggered ADC sampling without CPU wake-up, reducing quiescent power.
Recommended
Recommended Products Summary
Engineering reference data for ATSAME54N19A-AU-EFP β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATSAME54N19A-AU | ATSAME54N19A-AUT-EFP | ATSAME54P20A-AU-EFP | ATSAMD51N19A-AUT-EFP | ATSAME53N20A-AU-EFP |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-100 (14x14) | TQFP-100 (14x14) | TQFP-100 (14x14) | TQFP-100 (14x14) | TQFP-100 (14x14) | TQFP-100 (14x14) |
| Core Clock | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz |
| Flash Memory | 512 KB | 512 KB | 512 KB | 1024 KB | 512 KB | 1024 KB |
| SRAM | 192 KB | 192 KB | 192 KB | 256 KB | 192 KB | 256 KB |
| Flash Endurance (-EFP) | 100k cycles | 10k cycles | 100k cycles | 100k cycles | 100k cycles | 100k cycles |
| Ethernet MAC | Yes (10/100 with 1588) | Yes (10/100 with 1588) | Yes (10/100 with 1588) | Yes (10/100 with 1588) | No | No |
| CAN-FD | Yes | Yes | Yes | Yes | No | No |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C (AEC-Q100) | -40C to +85C |
Key Differentiators
- Extended Flash Performance (100k cycles, 20-year retention) (vs ATSAME54N19A-AU)
- Includes Ethernet MAC and CAN-FD (vs ATSAME53N20A-AU-EFP)
- Industrial grade vs automotive grade (vs ATSAMD51N19A-AUT-EFP)
Design Notes
The ATSAME54N19A-AU-EFP integrates a 1.2V LDO regulator on VDDCORE (pin 15). Per SAM E54 family datasheet, place a 1uF X7R 6.3V ceramic capacitor within 5 mm of pin 15 with short traces to GND (pin 16). Omitting or misplacing this capacitor causes VDDCORE ripple that manifests as erratic Flash programming failures, ADC drift, or core lockup. VDDIN (pin 10) requires 1uF + 100 nF decoupling; VDDANA (pin 31) needs a ferrite bead from VDDIO plus a separate 100 nF capacitor to GNDANA (pin 32).
Route the 50 MHz RMII signals between the ATSAME54N19A-AU-EFP and the external LAN8720A PHY with controlled impedance (50 ohm single-ended) and matched trace lengths within 50 mil. Keep RMII traces away from PWM switching nodes and the on-chip switching regulator to avoid coupling noise into the MAC. Per Microchip AN2100, a 4-layer PCB with dedicated analog and digital ground planes is mandatory; splitting grounds under the MCU is not recommended.
Three common pitfalls when bringing up ATSAME54N19A-AU-EFP designs: (1) forgetting to program the GCLK_MAIN divisor from the 48 MHz DFLL to the desired CPU clock causes NMI lockup; (2) leaving SWDIO/SWDCLK floating during POR can place the device in a debug-wait state - add 100 kohm pull-up to SWDIO per the SAM E54 family datasheet; (3) using the DAC without enabling the VDDANA reference buffer results in code-loaded rather than buffered output. Always run the Atmel Studio/MPLAB X project's start-up files before evaluating peripherals.
For USB full-speed operation, the ATSAME54N19A-AU-EFP's integrated PHY requires 45 ohm differential impedance on D+/D-. Per USB 2.0 specification, route the differential pair with no more than 50 mil mismatch and keep total length under 50 mm. Place the 27 ohm series termination resistors within 4 mm of the MCU pads. Without proper impedance control, USB enumeration fails at high temperature.
Compliance Information
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - choose ATSAMD51N19A-AUT-EFP for automotive. Halogen-free per Microchip environmental compliance statement.
