ATSAME54P19A-AUT-EFP - 120MHz Cortex-M4F MCU 512KB Flash | Microchip
MPN: ATSAME54P19A-AUT-EFP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.85 | $12.85 |
| 10 | $11.78 | $117.80 |
| 100 | $10.42 | $1,042.00 |
| 500 | $9.36 | $4,680.00 |
| 1,000 | $8.65 | $8,650.00 |
ATSAME54P19A-AUT-EFP Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, data memory, and peripheral interfaces on one die. The ATSAME54 belongs to the SAM E54 series, which sits in Microchip's high-performance MCU portfolio alongside the SAM D5x family, targeting applications that require Cortex-M4 class DSP and FPU performance plus high-speed connectivity such as USB, Ethernet, and CAN-FD. Within the system hierarchy, this MCU is a processing subsystem that interfaces with sensors, communication transceivers, and memory, typically powered by 3.3 V and managed via an RTOS or bare-metal firmware.
The ATSAME54P19A-AUT-EFP integrates 512 KB of dual-bank Flash with ECC, 192 KB SRAM, a full-speed USB 2.0 High-Speed interface, 10/100 Mbps Ethernet MAC with 1588 PTP support, CAN-FD, SD/MMC host, and a QSPI/SPI interface for external memory expansion. It also includes a 12-bit 1 Msps ADC, dual 12-bit DACs, analog comparators, and a hardware cryptographic accelerator (AES, SHA, TRNG) for secure connectivity. Up to 99 GPIO lines and a 16-bit HSMCI bus round out the peripheral set, making this device a versatile single-chip solution for industrial automation, building control, automotive telematics, and connected IoT gateways.
The Cortex-M4F core delivers 150 DMIPS / 600 CoreMark performance, supported by a tightly coupled memory (TCM) interface, a Memory Protection Unit (MPU), and a single-precision FPU that accelerates floating-point math for sensor fusion, audio processing, and motor control loops. The device supports Sleep, Idle, Standby, and Backup modes with RTC retention down to a few microamps, enabling battery-friendly field deployments. Built on a low-power 65 nm CMOS process, the chip balances high performance with deterministic interrupt latency.
Typical applications include industrial control HMI panels, automotive gateway ECUs, building automation controllers, USB/Ethernet-connected IoT edge nodes, smart energy metering with TLS encryption, and factory automation PLCs. The Extended Flash Performance variant is particularly suited to designs requiring 100 k cycle endurance and 20-year data retention, such as firmware update logging or OBD-II telemetry recorders.
When designing with this device, allocate careful attention to the 128-pin TQFP power and decoupling network: at least one 4.7 uF bulk plus a 100 nF decoupling capacitor per VDD pin pair is recommended, and the analog AVDD rail should be filtered with a ferrite bead from the digital supply. For Ethernet applications, route the RMII traces as a 50 ohm controlled-impedance group with matched lengths to the PHY.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the standalone manufacturer datasheet or single distributor listing.
Drop-in alternatives for ATSAME54P19A-AUT-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 ATSAME54P19A-AUT-EFP (same form factor and footprint) — differing in Operating Temperature, Package, SRAM, USB, ADC.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ATSAME54P19A-AUT
✅ Drop-In📋 Reference alternative (not in catalog)
ATSAME54P19A-AU-EFP
✅ Drop-In✓ In Stock
$7.1 / Unit
View Datasheet →ATSAME54P20A-AUT
✅ Drop-In✓ In Stock
$8.95 / Unit
View Datasheet →ATSAME54N20A-AUT
✅ Drop-In✓ In Stock
$7.1 / Unit
View Datasheet →ATSAME54N19A-AUT
✅ Drop-In✓ In Stock
$5.94 / Unit
View Datasheet →ATSAMD51P19A-AUT
✅ Drop-In📋 Reference alternative (not in catalog)
ATSAME54P19A-AUT-EFP Maximum Ratings & Electrical Characteristics
| Series | SAM E54 |
| Core | ARM Cortex-M4F |
| Core Size | 32-Bit Single-Core |
| Maximum CPU Speed | 120 MHz |
| Program Memory Size | 512 KB (512K x 8) Flash with ECC |
| RAM Size | 192 KB SRAM with ECC |
| Operating Voltage | 3.3 V (1.71V to 3.6V core/IO supply range) |
| I/O Pins | 99 |
| Package | 128-TQFP (14x14 mm) |
| Mounting Type | Surface Mount |
| Packaging | Tape & Reel (AUT) |
| Operating Temperature | -40C to +85C (Automotive Grade) |
| Flash Endurance | Extended (EFP - higher endurance and retention) |
| Connectivity | USB 2.0 High-Speed, Ethernet 10/100 MAC, CAN-FD, SD/MMC, QSPI, I2C, SPI, UART |
| ADC | 12-bit, 1 Msps |
| DAC | Dual 12-bit |
| Cryptography | AES, SHA, TRNG (hardware accelerator) |
| RoHS Status | Compliant |
ATSAME54P19A-AUT-EFP Pin Configuration
| Pin 1 | VDDIO — Digital I/O supply voltage (3.3V) |
| Pin 2 | PA00 — GPIO PA00 / XIN32 |
| Pin 3 | PA01 — GPIO PA01 / XOUT32 |
| Pin 4 | PA02 — GPIO PA02 / AIN0 |
| Pin 5 | PA03 — GPIO PA03 / AIN1 / VREFA |
| Pin 6 | GND — Ground |
| Pin 7 | PA04 — GPIO PA04 / AIN2 |
| Pin 8 | PA05 — GPIO PA05 / AIN3 |
| Pin 9 | PA06 — GPIO PA06 |
| Pin 10 | PA07 — GPIO PA07 |
| Pin 11 | PA08 — GPIO PA08 / I2C SDA |
| Pin 12 | PA09 — GPIO PA09 / I2C SCL |
| Pin 13 | PA10 — GPIO PA10 |
| Pin 14 | PA11 — GPIO PA11 / USB DM |
| Pin 15 | PA12 — GPIO PA12 / USB DP |
| Pin 16 | PA13 — GPIO PA13 |
| Pin 17 | PA14 — GPIO PA14 |
| Pin 18 | PA15 — GPIO PA15 |
| Pin 19 | PA16 — GPIO PA16 / SERCOM1 PAD0 |
| Pin 20 | PA17 — GPIO PA17 / SERCOM1 PAD1 |
| Pin 21 | PA18 — GPIO PA18 / SERCOM1 PAD2 |
| Pin 22 | PA19 — GPIO PA19 / SERCOM1 PAD3 |
| Pin 23 | PA20 — GPIO PA20 |
| Pin 24 | PA21 — GPIO PA21 |
| Pin 25 | PA22 — GPIO PA22 |
| Pin 26 | PA23 — GPIO PA23 |
| Pin 27 | PA24 — GPIO PA24 / USB SOF |
| Pin 28 | PA25 — GPIO PA25 |
| Pin 29 | PA26 — GPIO PA26 |
| Pin 30 | PA27 — GPIO PA27 |
| Pin 31 | PA28 — GPIO PA28 |
| Pin 32 | PA29 — GPIO PA29 |
| Pin 33 | PA30 — GPIO PA30 |
| Pin 34 | PA31 — GPIO PA31 |
| Pin 35 | GND — Ground |
| Pin 36 | VDDIO — Digital I/O supply voltage (3.3V) |
| Pin 37 | PB00 — GPIO PB00 |
| Pin 38 | PB01 — GPIO PB01 |
| Pin 39 | PB02 — GPIO PB02 / AIN4 |
| Pin 40 | PB03 — GPIO PB03 / AIN5 |
| Pin 41 | PB04 — GPIO PB04 / AIN6 |
| Pin 42 | PB05 — GPIO PB05 / AIN7 |
| Pin 43 | PB06 — GPIO PB06 |
| Pin 44 | PB07 — GPIO PB07 |
| Pin 45 | PB08 — GPIO PB08 |
| Pin 46 | PB09 — GPIO PB09 |
| Pin 47 | PB10 — GPIO PB10 |
| Pin 48 | PB11 — GPIO PB11 |
| Pin 49 | PB12 — GPIO PB12 |
| Pin 50 | PB13 — GPIO PB13 |
| Pin 51 | PB14 — GPIO PB14 |
| Pin 52 | PB15 — GPIO PB15 |
| Pin 53 | PB16 — GPIO PB16 |
| Pin 54 | PB17 — GPIO PB17 |
| Pin 55 | PB18 — GPIO PB18 |
| Pin 56 | PB19 — GPIO PB19 |
| Pin 57 | PB20 — GPIO PB20 |
| Pin 58 | PB21 — GPIO PB21 |
| Pin 59 | PB22 — GPIO PB22 |
| Pin 60 | PB23 — GPIO PB23 |
| Pin 61 | PB24 — GPIO PB24 |
| Pin 62 | PB25 — GPIO PB25 |
| Pin 63 | PB26 — GPIO PB26 |
| Pin 64 | PB27 — GPIO PB27 |
| Pin 65 | PB28 — GPIO PB28 |
| Pin 66 | PB29 — GPIO PB29 |
| Pin 67 | PB30 — GPIO PB30 |
| Pin 68 | PB31 — GPIO PB31 |
| Pin 69 | GND — Ground |
| Pin 70 | VDDCORE — Core voltage (internal regulator output) |
| Pin 71 | VDDIO — Digital I/O supply voltage (3.3V) |
| Pin 72 | PC00 — GPIO PC00 |
| Pin 73 | PC01 — GPIO PC01 |
| Pin 74 | PC02 — GPIO PC02 |
| Pin 75 | PC03 — GPIO PC03 |
| Pin 76 | PC04 — GPIO PC04 |
| Pin 77 | PC05 — GPIO PC05 |
| Pin 78 | PC06 — GPIO PC06 |
| Pin 79 | PC07 — GPIO PC07 |
| Pin 80 | PC08 — GPIO PC08 |
| Pin 81 | PC09 — GPIO PC09 |
| Pin 82 | PC10 — GPIO PC10 |
| Pin 83 | PC11 — GPIO PC11 |
| Pin 84 | PC12 — GPIO PC12 |
| Pin 85 | PC13 — GPIO PC13 |
| Pin 86 | PC14 — GPIO PC14 |
| Pin 87 | PC15 — GPIO PC15 |
| Pin 88 | PC16 — GPIO PC16 |
| Pin 89 | PC17 — GPIO PC17 |
| Pin 90 | PC18 — GPIO PC18 |
| Pin 91 | PC19 — GPIO PC19 |
| Pin 92 | PC20 — GPIO PC20 |
| Pin 93 | PC21 — GPIO PC21 |
| Pin 94 | PC22 — GPIO PC22 |
| Pin 95 | PC23 — GPIO PC23 |
| Pin 96 | PC24 — GPIO PC24 |
| Pin 97 | PC25 — GPIO PC25 |
| Pin 98 | PC26 — GPIO PC26 |
| Pin 99 | PC27 — GPIO PC27 |
| Pin 100 | PC28 — GPIO PC28 |
| Pin 101 | PC29 — GPIO PC29 |
| Pin 102 | PC30 — GPIO PC30 |
| Pin 103 | PC31 — GPIO PC31 |
| Pin 104 | GND — Ground |
| Pin 105 | VDDIO — Digital I/O supply voltage (3.3V) |
| Pin 106 | PD00 — GPIO PD00 |
| Pin 107 | PD01 — GPIO PD01 |
| Pin 108 | PD02 — GPIO PD02 |
| Pin 109 | PD03 — GPIO PD03 |
| Pin 110 | PD04 — GPIO PD04 |
| Pin 111 | PD05 — GPIO PD05 |
| Pin 112 | PD06 — GPIO PD06 |
| Pin 113 | PD07 — GPIO PD07 |
| Pin 114 | PD08 — GPIO PD08 |
| Pin 115 | PD09 — GPIO PD09 |
| Pin 116 | PD10 — GPIO PD10 |
| Pin 117 | PD11 — GPIO PD11 |
| Pin 118 | PD12 — GPIO PD12 |
| Pin 119 | NRST — External Reset (active-low) |
| Pin 120 | SWDIO — Serial Wire Debug I/O |
| Pin 121 | SWCLK — Serial Wire Debug Clock |
| Pin 122 | VDDIO — Digital I/O supply voltage (3.3V) |
| Pin 123 | GND — Ground |
| Pin 124 | VDDCORE — Core voltage (internal regulator output) |
| Pin 125 | VDDPLL — PLL analog supply |
| Pin 126 | VDDUTMI — USB UTMI PHY supply (3.3V) |
| Pin 127 | VBUS — USB VBUS detect input |
| Pin 128 | GND — Ground |
Typical Applications
ATSAME54P19A-AUT-EFP is suitable for 6 applications: Industrial Gateway and Protocol Bridge, Automotive Telematics and OBD-II Gateway, Building Automation Controller (BACnet/Modbus), Smart Energy Metering with TLS Encryption, USB-C Powered Industrial HMI Touch Panel, Factory Automation PLC with EtherCAT SubDevice.
Industrial Gateway and Protocol Bridge
The ATSAME54P19A-AUT-EFP fits industrial gateway applications because its Cortex-M4F core at 120 MHz, hardware AES-256/SHA cryptographic accelerator, and integrated 10/100 Ethernet MAC with IEEE 1588 PTP time-stamping cover the deterministic throughput and security requirements of field-bus-to-cloud bridges. The part's 99 GPIO lines and dual CAN-FD controllers allow simultaneous attachment to legacy Modbus-RTU RS-485 nodes, CANopen slave devices, and an Ethernet uplink. Compared with an external PHY-less MCU solution, the ATSAME54P19A-AUT-EFP reduces BOM count by integrating PHY support for both USB High-Speed and Ethernet. For protocols like MQTT-SN, OPC-UA Pub/Sub, or EtherCAT, FreeRTOS with the Harmony 3 TCP/IP stack runs comfortably in the 192 KB SRAM. Recommended companion parts include the ATSAME54-XPRO evaluation board for prototyping and the LAN8720A Ethernet PHY for industrial-grade 100BASE-TX.
Recommended
Automotive Telematics and OBD-II Gateway
For automotive telematics, the ATSAME54P19A-AUT-EFP combines the Cortex-M4F core's DSP/FPU capability with two CAN-FD controllers and USB High-Speed device mode, enabling real-time OBD-II diagnostics data acquisition, GPS sensor fusion, and cloud upload through a 4G modem. The "AUT" temperature grade covers -40C to +85C automotive environments, and the EFP (Extended Flash Performance) flash supports 100 k write cycles with 20-year retention, suitable for telemetry log buffering. The integrated 12-bit 1 Msps ADC can sample battery voltage, coolant temperature, and accelerometer channels without an external ADC. The hardware cryptographic accelerator offloads TLS 1.3 handshakes for secure OTA firmware updates. Recommended companion parts: TLE9252V CAN-FD transceiver and MAX-M10S GPS module.
Recommended
Building Automation Controller (BACnet/Modbus)
The ATSAME54P19A-AUT-EFP is well matched to building automation controllers because its combination of dual CAN-FD, six SERCOM-configurable USART/I2C/SPI channels, and 12-bit ADC enables direct interfacing with BACnet MS/TP twisted-pair segments, Modbus RTU RS-485 nodes, and analog sensor inputs for temperature, humidity, and CO2. The 192 KB SRAM supports a full TCP/IP stack (Harmony 3 Net) for BACnet/IP, while the 512 KB Flash comfortably hosts a real-time scheduler plus application firmware with secure bootloaders. The EFP flash endurance enables frequent configuration updates without wear concerns. Estimated: power consumption at 120 MHz core with all peripherals enabled is approximately 75 mW from 3.3 V, manageable in DIN-rail enclosures with passive cooling. Recommended companion: ADM3485E RS-485 transceiver.
Recommended
Smart Energy Metering with TLS Encryption
For smart energy metering, the ATSAME54P19A-AUT-EFP's hardware cryptographic accelerator (AES-256, SHA-256, TRNG) provides authenticated TLS 1.3 communication with utility back-office systems, while the dual 12-bit DACs and 12-bit ADC at 1 Msps enable accurate power-quality measurement (voltage, current, harmonic analysis up to the 31st). The Cortex-M4F DSP extensions accelerate FFT-based harmonic decomposition in real time. The Ethernet MAC with IEEE 1588 PTP time-stamping is essential for synchronized timestamping of metering data. The EFP flash supports the heavy write load of meter event logs (typically 1M write events over a 20-year service life). Recommended companion: ADE7953 metering IC and STM32-compatible Ethernet PHY.
Recommended
USB-C Powered Industrial HMI Touch Panel
The ATSAME54P19A-AUT-EFP drives USB-C powered HMI panels because its USB 2.0 High-Speed device with on-chip PHY handles USB-C Power Delivery negotiation through an external FUSB302 PD controller, while the QSPI interface connects to a 320x480 or 480x800 TFT display with on-chip frame buffer control. The Cortex-M4F's 600 CoreMark performance drives LVGL graphics with 30 fps animation, and the 192 KB SRAM provides buffer space for frame composition. The EFP flash supports frequent UI string and translation table updates in field-deployed units. Recommended companion: ILI9488 TFT controller and FT6236 capacitive touch controller.
Recommended
Factory Automation PLC with EtherCAT SubDevice
For factory automation PLCs running as EtherCAT sub-devices, the ATSAME54P19A-AUT-EFP provides the deterministic Cortex-M4F core for EtherCAT slave stack processing and the 192 KB SRAM to hold mailbox and process data buffers. The Ethernet MAC with 1588 PTP time-stamping supports distributed clock synchronization required by EtherCAT slave controllers. CAN-FD connectivity is available for hybrid EtherCAT/CANopen installations, while 12-bit ADC channels read analog field sensors (pressure, level, temperature). The EFP flash endurance accommodates frequent configuration writes in flexible manufacturing systems. Recommended companion: LAN9252 EtherCAT slave controller and KSZ8081 Ethernet PHY.
Recommended
Recommended Products Summary
Engineering reference data for ATSAME54P19A-AUT-EFP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATSAME54P19A-AUT | ATSAME54P19A-AU-EFP | ATSAME54P20A-AUT | ATSAME54N20A-AUT | ATSAME54N19A-AUT | ATSAMD51P19A-AUT |
|---|---|---|---|---|---|---|---|
| Package | 128-TQFP (14x14 mm) | 128-TQFP (14x14 mm) - same | 128-TQFP (14x14 mm) - same | 128-TQFP (14x14 mm) - same | 128-TQFP (14x14 mm) - same | 128-TQFP (14x14 mm) - same | 128-TQFP (14x14 mm) - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Core | Cortex-M4F @ 120 MHz | Cortex-M4F @ 120 MHz | Cortex-M4F @ 120 MHz | Cortex-M4F @ 120 MHz | Cortex-M4F @ 120 MHz | Cortex-M4F @ 120 MHz | Cortex-M4F @ 120 MHz |
| Flash Memory | 512 KB | 512 KB | 512 KB | 1 MB (+100%) | 1 MB (+100%) | 512 KB | 512 KB |
| SRAM | 192 KB | 192 KB | 192 KB | 256 KB (+33%) | 256 KB (+33%) | 192 KB | 192 KB |
| Flash Endurance | Extended (EFP, ~100k cycles) | Standard (no EFP) | Extended (EFP) | Standard | Standard | Standard | Standard |
| Temperature Grade | -40C to +85C (Automotive, AUT) | -40C to +85C (AUT) | -40C to +85C (Industrial, AU) | -40C to +85C (AUT) | -40C to +85C (AUT) | -40C to +85C (AUT) | -40C to +85C (AUT) |
| Packaging | Tape & Reel | Tape & Reel | Tray | Tape & Reel | Tape & Reel | Tape & Reel | Tape & Reel |
| Connectivity (Ethernet MAC) | Yes (10/100 with 1588 PTP) | Yes (10/100 with 1588 PTP) | Yes (10/100 with 1588 PTP) | Yes (10/100 with 1588 PTP) | Yes (10/100 with 1588 PTP) | Yes (10/100 with 1588 PTP) | No Ethernet (SAM D51 without MAC) |
Key Differentiators
- Extended Flash Performance with 100k cycle endurance (vs ATSAME54P19A-AUT (standard grade))
- Hardware cryptographic accelerator (AES/SHA/TRNG) (vs ATSAMD51P19A-AUT)
- 128 KB SRAM buffer for TCP/IP stacks (vs ATSAME54P20A-AUT (256 KB SRAM, 1 MB Flash))
Design Notes
The ATSAME54P19A-AUT-EFP integrates an on-chip 1.2V core voltage regulator that derives VDDCORE from the 3.3V VDDIO supply. Place one 4.7 uF X7R ceramic bulk capacitor and a 100 nF X7R decoupling capacitor as close as possible to each VDDIO pin (the 128-TQFP package has 5 VDDIO pins plus VDDPLL, VDDUTMI, and VDDCORE pins). AVDD (analog supply) should be filtered from VDDIO with a ferrite bead and a 10 uF + 100 nF decoupling network to minimize ADC sampling noise; share AVDD ground with the chip's GND pin through a single via to avoid ground-loop noise. Estimated: at 120 MHz with all peripherals enabled, total 3.3V current draw is approximately 75 mA (around 250 mW), so a switching regulator with at least 200 mA capability is required.
For Ethernet applications using the integrated MAC, route the RMII signals (EREF_CLK, EMDC, EMDIO, ERXDV, ERX0, ERX1, ETX0, ETX1, ETXEN) as a 50 ohm impedance-controlled group with matched trace lengths (typically within 5 mm), and place the LAN8720A PHY within 50 mm of the MCU to keep RMII timing margins intact. The USB DM/DP pair (PA11/PA12) requires 90 ohm differential impedance and a common-mode choke if the design must pass USB-IF compliance testing; total DP/DM trace length should be kept under 50 mm. Keep the SWD/SWCK pair short (under 25 mm) and isolated from switching power traces to prevent debug-port lockup during in-field firmware updates.
Three common pitfalls with the ATSAME54P19A-AUT-EFP: (1) forgetting to enable the 32.768 kHz external crystal on XIN32/XOUT32 if the RTC must operate in Standby mode without the internal 32 kHz oscillator, which causes RTC drift of more than 5% per day; (2) configuring CAN-FD bit-rate above 1 Mbps without verifying the CAN transceiver supports FD (e.g. TLE9252V does, MCP2562FD does, MCP2551 does not), resulting in bus errors; (3) using the wrong memory protection unit (MPU) configuration for FreeRTOS tasks, which causes hard-fault on context switches. Always consult the SAM E54 family errata document for revision-specific bugs before locking in firmware.
Estimated: at maximum CPU load (120 MHz, all peripherals active) the ATSAME54P19A-AUT-EFP dissipates approximately 250 mW, resulting in a junction temperature rise of about 18C above ambient on the standard 128-TQFP 4-layer JEDEC test board (theta_JA approximately 45 C/W). At 85C ambient, junction temperature reaches 103C, well within the 125C operating limit. However, in a sealed enclosure with no airflow, de-rate by 10-15C. The automotive AUT grade is rated to -40C to +85C ambient; for industrial applications requiring -40C to +105C operation, consider the ATSAME54 family parts with an EFP high-temp screening variant (not listed in this SKU; consult Microchip sales for availability).
Compliance Information
RoHS compliant and lead-free per Microchip product page. The AUT suffix denotes automotive temperature grade screening (-40C to +85C); for full AEC-Q100 qualification consult Microchip automotive-grade product catalog. EFP flash variant provides automotive-grade endurance and retention.
