ATSAME53J18A-MU-EFP - 120MHz Cortex-M4F MCU, 256KB Flash | Microchip
MPN: ATSAME53J18A-MU-EFP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $8.2 | $8.20 |
| 10 | $7.55 | $75.50 |
| 100 | $6.72 | $672.00 |
| 500 | $5.95 | $2,975.00 |
| 1,000 | $5.3 | $5,300.00 |
ATSAME53J18A-MU-EFP Overview
A microcontroller (MCU) is an integrated circuit combining a CPU core, program and data memory, plus peripheral interfaces on a single silicon die. The Cortex-M4F is a Thumb-2 instruction set core with single-precision IEEE 754 floating point, DSP extensions, and a deterministic interrupt controller (NVIC), positioning it between Cortex-M3 general-purpose parts and Cortex-M7 high-performance parts. The SAME53 sits in the upper-mid tier of the Microchip SAM family, integrating Ethernet, USB, CAN-FD, and crypto accelerators.
Key features include the 120 MHz Cortex-M4F core with FPU, 256 KB Flash with ECC, 128 KB SRAM, 10/100 Ethernet MAC with IEEE 1588 PTP timestamping, USB 2.0 Full-Speed and Hi-Speed capable host/device, dual CAN-FD controllers, and a 12-bit 1 MSPS ADC with up to 24 channels. Hardware crypto accelerators support AES-256, SHA-2, and True Random Number Generation, while the SERCOM peripheral framework provides configurable I2C/SPI/UART on most pins.
The ATSAME53 architecture uses a multi-layer AHB bus matrix that allows simultaneous DMA-driven peripheral transfers while the core executes from tightly-coupled SRAM, sustaining deterministic real-time response. The 1.2V internal core regulator is paired with a brown-out detector and an integrated 8 MHz/48 MHz dual-FRC system that trims against a 32.768 kHz crystal for low-jitter Ethernet and USB clocks.
Typical applications include industrial Ethernet gateways, building automation controllers, smart energy and metering nodes, USB-to-CAN bridges, and IEC 60730 Class B safety appliance controllers. The integrated Ethernet MAC with hardware PTP makes the part well-suited for substation and process automation where precise time synchronization is required.
When designing with this MCU, allocate a 4-layer PCB with a continuous ground pour beneath the 64-pin QFN thermal pad to keep theta_JA manageable; the exposed pad must be soldered for both thermal and electrical ground reference. Decouple VDDIO and VDDIN with 100 nF plus 4.7 uF ceramics placed within 3 mm of each pin group.
This page synthesizes distributor pricing, drop-in alternatives from the SAME53/SAME51 family, and practical design notes not consolidated in the manufacturer datasheet, including PCB layout guidance for the Ethernet PHY interface.
Drop-in alternatives for ATSAME53J18A-MU-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 ATSAME53J18A-MU-EFP (same form factor and footprint) — differing in ADC, SRAM, Core Architecture, DAC, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ATSAME53J18A-MF
✅ Drop-In✓ In Stock
$5.4 / Unit
View Datasheet →ATSAME53J18A-MFT
✅ Drop-In✓ In Stock
$7.45 / Unit
View Datasheet →ATSAME53J18A-MU-EFP Maximum Ratings & Electrical Characteristics
| Core Architecture | ARM Cortex-M4F with FPU |
| Maximum CPU Clock | 120 MHz |
| Instruction Set | Thumb-2 with DSP extensions |
| Program Flash | 256 KB (dual-panel, ECC) |
| SRAM | 128 KB (ECC) |
| Operating Voltage | 2.7 V to 3.6 V |
| Package | 64-pin VQFN with exposed pad (7x7 mm) |
| Operating Temperature | -40 C to +85 C (EFP grade) |
| Ethernet MAC | 10/100 Mbps with IEEE 1588 PTP |
| USB | USB 2.0 FS + Hi-Speed host/device |
| CAN Controllers | 2 x CAN-FD |
| ADC | 12-bit, 1 MSPS, up to 24 channels |
| Hardware Crypto | AES-256, SHA-256, TRNG |
| SERCOM Peripherals | Configurable I2C/SPI/UART |
| Mounting Type | Surface Mount |
| MSL Level | 3 (168 hours) |
| RoHS Status | Compliant |
| Lead-Free / Halogen-Free | Yes / Yes |
ATSAME53J18A-MU-EFP Pin Configuration
| Pin 1 | PD00 — GPIO PD00 / SERCOM6 |
| Pin 2 | PD01 — GPIO PD01 / SERCOM6 |
| Pin 3 | PD02 — GPIO PD02 / SERCOM6 |
| Pin 4 | PD03 — GPIO PD03 / SERCOM6 |
| Pin 5 | VDDIO — I/O supply voltage |
| Pin 6 | GND — Ground |
| Pin 7 | VDDIN — Main supply input |
| Pin 8 | PA00 — GPIO PA00 / SERCOM1 |
| Pin 9 | PA01 — GPIO PA01 / SERCOM1 |
| Pin 10 | PA02 — GPIO PA02 / SERCOM2 / ADC0 |
| Pin 11 | PA03 — GPIO PA03 / SERCOM2 / ADC0 |
| Pin 12 | VDDIO — I/O supply voltage |
| Pin 13 | GND — Ground |
| Pin 14 | PA04 — GPIO PA04 / SERCOM0 / ADC0 |
| Pin 15 | PA05 — GPIO PA05 / SERCOM0 / ADC0 |
| Pin 16 | PA06 — GPIO PA06 / SERCOM0 / ADC1 |
| Pin 17 | PA07 — GPIO PA07 / SERCOM0 / ADC1 |
| Pin 18 | PA08 — GPIO PA08 / SERCOM2 / I2S |
| Pin 19 | PA09 — GPIO PA09 / SERCOM2 / I2S |
| Pin 20 | PA10 — GPIO PA10 / SERCOM2 |
| Pin 21 | PA11 — GPIO PA11 / SERCOM2 / CAN0 RX |
| Pin 22 | PA12 — GPIO PA12 / SERCOM2 / CAN0 TX |
| Pin 23 | GND — Ground |
| Pin 24 | VDDIO — I/O supply voltage |
| Pin 25 | VDDIN — Main supply input |
| Pin 26 | VDDIO — I/O supply voltage |
| Pin 27 | PA13 — GPIO PA13 / SERCOM4 |
| Pin 28 | PA14 — GPIO PA14 / SERCOM4 |
| Pin 29 | PA15 — GPIO PA15 / SERCOM4 |
| Pin 30 | PA16 — GPIO PA16 / SERCOM1 |
| Pin 31 | PA17 — GPIO PA17 / SERCOM1 |
| Pin 32 | PA18 — GPIO PA18 / SERCOM3 |
| Pin 33 | PA19 — GPIO PA19 / SERCOM3 |
| Pin 34 | PA20 — GPIO PA20 / SERCOM3 |
| Pin 35 | PA21 — GPIO PA21 / SERCOM3 |
| Pin 36 | PB00 — GPIO PB00 / SERCOM5 / ADC0 |
| Pin 37 | PB01 — GPIO PB01 / SERCOM5 / ADC0 |
| Pin 38 | PB02 — GPIO PB02 / SERCOM5 / ADC0 |
| Pin 39 | VDDIO — I/O supply voltage |
| Pin 40 | GND — Ground |
| Pin 41 | PB03 — GPIO PB03 / SERCOM5 / ADC0 |
| Pin 42 | PB04 — GPIO PB04 / SERCOM7 |
| Pin 43 | PB05 — GPIO PB05 / SERCOM7 |
| Pin 44 | VDDIN — Main supply input |
| Pin 45 | PB06 — GPIO PB06 / SERCOM7 |
| Pin 46 | PB07 — GPIO PB07 / SERCOM7 |
| Pin 47 | PB08 — GPIO PB08 / SERCOM4 |
| Pin 48 | PB09 — GPIO PB09 / SERCOM4 |
| Pin 49 | PB10 — GPIO PB10 / SERCOM4 |
| Pin 50 | PB11 — GPIO PB11 / SERCOM4 |
| Pin 51 | PB12 — GPIO PB12 / SERCOM4 |
| Pin 52 | PB13 — GPIO PB13 / SERCOM4 |
| Pin 53 | VDDIO — I/O supply voltage |
| Pin 54 | PB14 — GPIO PB14 / SERCOM4 |
| Pin 55 | PB15 — GPIO PB15 / SERCOM4 |
| Pin 56 | PC00 — GPIO PC00 / SERCOM6 |
| Pin 57 | PC01 — GPIO PC01 / SERCOM6 |
| Pin 58 | PC02 — GPIO PC02 / SERCOM6 |
| Pin 59 | PC03 — GPIO PC03 / SERCOM6 |
| Pin 60 | PC04 — GPIO PC04 / SERCOM7 |
| Pin 61 | PC05 — GPIO PC05 / SERCOM7 |
| Pin 62 | PC06 — GPIO PC06 / SERCOM6 |
| Pin 63 | PC07 — GPIO PC07 / SERCOM6 |
| Pin 64 | RESETN — Active-low reset input |
Typical Applications
ATSAME53J18A-MU-EFP is suitable for 6 applications: Industrial Ethernet Gateway, Building Automation Controller, Smart Energy Metering, USB-to-CAN-FD Bridge, IEC 60730 Class B Safety Appliance Controller, IoT Edge Sensor Hub.
Industrial Ethernet Gateway
The ATSAME53J18A-MU-EFP integrates a 10/100 Ethernet MAC with hardware IEEE 1588 PTP timestamping, making it well-suited for industrial protocol gateways bridging Modbus TCP, EtherNet/IP, and PROFINET networks. The 120 MHz Cortex-M4F with FPU can sustain wire-speed TCP/IP stack execution with TLS 1.2 handshakes accelerated by the hardware AES-256 engine, while the dual CAN-FD controllers handle local sensor/actuator networks. Engineers typically pair this MCU with a Microchip KSZ8081 or LAN8742A PHY via RMII, placing 49.9 ohm 1% termination resistors within 5 mm of the PHY TX/RX lines to meet IEEE 802.3 return-loss. The EFP flash-performance grade supports >100K P/E cycles, suiting field firmware-update lifecycles common in substation and process-automation installations.
Recommended
Building Automation Controller
The ATSAME53J18A-MU-EFP serves as the main controller in BACnet/IP, KNX-IP, and DALI-2 gateway nodes. Its 256 KB dual-bank Flash with ECC and 128 KB SRAM with ECC provide headroom for a full TCP/IP+TLS stack plus BACnet object libraries. The 12-bit 1 MSPS ADC handles up to 24 analog sensor channels (temperature, light, humidity transducers), while the six SERCOM peripherals drive RS-485 field buses, I2C sensor breakouts, and SPI-driven HMI displays. Hardware AES-256 secures BACnet/SC and KNXnet/IP TLS sessions without burdening the CPU, and the Cortex-M4F FPU accelerates control-loop math for HVAC damper and valve actuators at 1 kHz update rates.
Recommended
Smart Energy Metering
The ATSAME53J18A-MU-EFP targets single-phase and three-phase smart energy meters with its 120 MHz Cortex-M4F core and 12-bit 1 MSPS ADC. The dual-panel Flash with ECC supports Over-The-Air firmware upgrades mandated by IEC 62056 / DLMS, while the integrated TRNG seeds the hardware AES-256 accelerator for secure key exchange with utility head-ends. Engineers pair the SAME53 with external current-sensing AFE chips (e.g., ATM90E26) via SPI and route the Ethernet MAC to a HomePlug GreenPHY/Powerline modem. The EFP flash-performance grade ensures >20-year retention at 85C, satisfying meter lifecycle requirements in EU and Asian utility deployments.
Recommended
USB-to-CAN-FD Bridge
The ATSAME53J18A-MU-EFP doubles as a USB-CDC to CAN-FD bridge for automotive diagnostic tools, industrial PC-based configuration utilities, and EV-charging station controllers. Its USB 2.0 Full-Speed and Hi-Speed capable port operates in either host or device mode, while the dual CAN-FD controllers run at up to 5 Mbps with ISO 11898-1:2015 frame format. The Cortex-M4F FPU accelerates CANopen and J1939 protocol parsing at 1 ms cycle times. Hardware AES-256 secures OEM diagnostic authentication, and the 128 KB SRAM buffers multiple CAN-FD frames to absorb bus-burst events without USB backpressure.
Recommended
IEC 60730 Class B Safety Appliance Controller
The ATSAME53J18A-MU-EFP supports IEC 60730 Class B safety requirements for household appliances (washing machines, ovens, induction cooktops) thanks to ECC-protected Flash and SRAM, hardware CRC, and dual-window watchdog timers. The 120 MHz core runs the main motor-control loop while the Cortex-M4F DSP extensions implement Field-Oriented Control (FOC) for 3-phase BLDC motors. Engineers typically add an external Class-B self-test library (Microchip Class B libraries) and pair the MCU with isolated gate drivers for IGBT/MOSFET power stages. The EFP grade provides the long Flash retention needed for 100K-cycle firmware updates over a 15-year appliance lifetime.
Recommended
IoT Edge Sensor Hub
The ATSAME53J18A-MU-EFP functions as an edge-computing hub aggregating multiple sensor buses (I2C, SPI, UART, RS-485) into a single Ethernet or Wi-Fi backhaul. The 120 MHz Cortex-M4F with FPU executes edge-ML inference (e.g., CMSIS-NN anomaly detection) on sensor data before forwarding to the cloud. Six SERCOM peripherals address 12+ sensors concurrently via DMA without CPU intervention. The hardware SHA-256/TRNG block supports TLS 1.3 handshakes, while the 256 KB dual-bank Flash supports signed firmware-update mechanisms. EFP temperature grade suits outdoor enclosures (-40 C to +85 C) in industrial IoT installations.
Recommended
Recommended Products Summary
Engineering reference data for ATSAME53J18A-MU-EFP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ATSAME53J18A-MF | ATSAME53J18A-MFT | ATSAME53J18A-AU-EFP |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | VQFN-64 (7x7 mm) | VQFN-64 (7x7 mm) - same | VQFN-64 (7x7 mm) - same | TQFP-64 (10x10 mm) - different |
| CPU Core | ARM Cortex-M4F | ARM Cortex-M4F | ARM Cortex-M4F | ARM Cortex-M4F |
| Max CPU Clock | 120 MHz | 120 MHz | 120 MHz | 120 MHz |
| Flash Memory | 256 KB | 256 KB | 256 KB | 256 KB |
| SRAM | 128 KB | 128 KB | 128 KB | 128 KB |
| Ethernet MAC | Yes (10/100 + IEEE 1588 PTP) | Yes (10/100 + IEEE 1588 PTP) | Yes (10/100 + IEEE 1588 PTP) | Yes (10/100 + IEEE 1588 PTP) |
| Operating Temperature | -40 C to +85 C (EFP) | -40 C to +85 C (non-EFP) | -40 C to +85 C (non-EFP) | -40 C to +85 C (EFP) |
| Flash Endurance (EFP grade) | Extended (>100K P/E) | Standard (~10K P/E) | Standard (~10K P/E) | Extended (>100K P/E) |
Key Differentiators
- Integrated 10/100 Ethernet MAC with hardware IEEE 1588 PTP (vs ATSAME51N20A-AU-EFP (no Ethernet MAC))
- EFP Extended Flash Performance grade (vs ATSAME53J18A-MF (standard grade))
- Hardware AES-256 / SHA-256 / TRNG crypto accelerator (vs ATSAMD51J19A-MU (no crypto hardware))
Design Notes
The 64-pin VQFN exposed thermal pad MUST be soldered to a continuous ground plane for both thermal dissipation and electrical reference. Use a 4-layer PCB with the inner layer 2 dedicated to ground; the thermal pad land should have 5x5 thermal vias (0.3 mm drill, 0.6 mm pad) connecting to inner ground pours. Place 100 nF plus 4.7 uF X7R 0402/0603 ceramic decoupling capacitors within 3 mm of each VDDIN and VDDIO pin group to suppress switching transients from the internal 1.2V core regulator.
Route the Ethernet RMII signals (ERX0, ERX1, ETX0, ETX1, EREF_CLK, EMDC, EMDIO) on the top layer with 50 ohm controlled impedance; keep traces under 25 mm and away from switching regulator or motor-drive traces. Place the 49.9 ohm 1% termination resistors within 5 mm of the PHY TX+/- and RX+/- pins, with the PHY placed close to the RJ45 jack to minimize stub lengths. Crosstalk between adjacent RMII pairs must stay below -30 dB to meet IEEE 802.3 return-loss specifications.
Do not leave unused SERCOM pins floating when configured as inputs. Set unused SERCOM pins as outputs driven low, or enable the internal pull-up to avoid parasitic current paths through the I/O ring. The SAME53 VDDIN and VDDIO pins have specific power-up sequencing - VDDIN must reach 2.7 V before VDDIO is applied if VDDIO > 3.0 V; otherwise the internal POR may trigger a brown-out reset. Always assert the RESETN pin low for at least 1 ms after both rails stabilize.
Compliance Information
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - for automotive applications, refer to ATSAMxE5xA-qualified variants. Lead-free reflow profile per J-STD-020 MSL3.
