ATSAME54N19A-AU - 120MHz Cortex-M4F MCU, 512KB Flash | Microchip
MPN： ATSAME54N19A-AU ✓ 啟用中ATSAME54N19A-AU 概覽
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. The Cortex-M4F belongs to ARM's Cortex-M family of energy-efficient processors designed for embedded deterministic real-time control. Within the SAM E54 series, the ATSAME54N19A-AU sits in the Cortex-M4F -> Cortex-M -> 32-bit MCU -> embedded processor hierarchy, targeting industrial HMI, connectivity gateways, and audio processing applications.
Key features include the Cortex-M4F core with single-precision FPU and DSP extensions, a high-speed on-chip 12-bit 1 Msps ADC, USB 2.0 Full-Speed with on-chip PHY, a 100 MHz system bus, multiple SERCOM channels configurable as UART/SPI/I2C, an I2S interface for digital audio, a 16-bit HSMCI for SD card storage, and a Crypto Accelerator (TRNG, AES, SHA). The 100-TQFP package provides ample I/O for parallel TFT displays and external memory buses.
The SAM E54 architecture uses a multi-layer AHB bus matrix connecting the CPU, DMA controllers, and peripherals, allowing concurrent access with deterministic latency. The dual-panel Flash subsystem enables live firmware updates and EEPROM emulation, while the SRAM with ECC supports safety-critical applications where single-bit errors must be corrected automatically.
Typical applications include industrial HMI panels with TFT displays, smart energy metering, IoT edge nodes with USB connectivity, digital audio streaming devices using I2S, and automotive aftermarket infotainment controllers. Designers value the on-chip FPU for sensor-fusion algorithms and the integrated crypto block for secure boot implementations.
When designing with the ATSAME54N19A-AU, ensure 100 nF and 4.7 uF decoupling caps are placed near each VDD pin pair, and that the 12 MHz crystal or external clock meets the accuracy requirements specified in the SAM E54 datasheet. For USB applications, the DP/DM trace impedance must be tuned to 90 ohms differential.
直接替換替代品，適用於 ATSAME54N19A-AU — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ATSAME54N19A-AU （相同外形與佔位） — 差異在於 USB, ADC, Operating Temperature, SRAM, Core.
ATSAME54N19A-AF
✅ 直接替換聯絡詢價
查看資料表 →ATSAME54N20A-AU
✅ 直接替換聯絡詢價
查看資料表 →ATSAME54N19A-AUT
✅ 直接替換聯絡詢價
查看資料表 →ATSAME54P19A-AU
✅ 直接替換聯絡詢價
查看資料表 →ATSAME54P20A-AU
✅ 直接替換📋 參考替代品（不在目錄中）
ATSAME51N19A-AU
✅ 直接替換聯絡詢價
查看資料表 →ATSAME54N19A-AU 最大額定值與電氣特性
| Core Architecture | ARM Cortex-M4F with FPU and DSP extensions |
| 最大時脈頻率 | 120 MHz |
| Program Memory (Flash) | 512 KB (dual-panel with ECC) |
| SRAM | 192 KB with ECC |
| Supply Voltage (VDD) | 1.62 V to 3.6 V |
| 工作溫度 | -40C to +85C (industrial) |
| 封裝 | 100-pin TQFP (14x14 mm) |
| 安裝類型 | Surface Mount |
| ADC | 12-bit, up to 1 Msps, 16 channels |
| USB | USB 2.0 Full-Speed with on-chip PHY |
| SERCOM Channels | 8 (configurable as UART/SPI/I2C) |
| I2S Audio Interface | Yes |
| Crypto Accelerator | TRNG, AES-256, SHA-256, RSA |
| External Memory Bus | Yes (EBI, 16-bit) |
| RoHS 狀態 | Compliant |
| MSL 等級 | 3 |
ATSAME54N19A-AU 腳位配置
| 腳位 1 | PA03 — General I/O / ADC AIN[1] |
| 腳位 2 | PA04 — General I/O / ADC AIN[2] |
| 腳位 3 | PA05 — General I/O / ADC AIN[3] |
| 腳位 4 | PA06 — General I/O / ADC AIN[4] |
| 腳位 5 | PA07 — General I/O / ADC AIN[5] |
| 腳位 6 | VDDIO — I/O supply voltage 1.62V-3.6V |
| 腳位 7 | VDD — Core voltage regulator input |
| 腳位 8 | GND — Ground |
| 腳位 9 | PA08 — General I/O / NMI |
| 腳位 10 | PA09 — General I/O |
| 腳位 11 | PA10 — General I/O |
| 腳位 12 | PA11 — General I/O |
| 腳位 13 | PA12 — General I/O |
| 腳位 14 | PA13 — General I/O |
| 腳位 15 | PA14 — General I/O |
| 腳位 16 | PA15 — General I/O |
| 腳位 17 | PA16 — General I/O |
| 腳位 18 | PA17 — General I/O |
| 腳位 19 | PA18 — General I/O |
| 腳位 20 | PA19 — General I/O |
| 腳位 21 | PA20 — General I/O |
| 腳位 22 | PA21 — General I/O |
| 腳位 23 | PA22 — General I/O |
| 腳位 24 | PA23 — General I/O |
| 腳位 25 | PA24 — General I/O / USB DP |
| 腳位 26 | PA25 — General I/O / USB DM |
| 腳位 27 | GND — Ground |
| 腳位 28 | VDDIO — I/O supply voltage |
| 腳位 29 | PB00 — General I/O |
| 腳位 30 | PB01 — General I/O |
| 腳位 31 | PB02 — General I/O |
| 腳位 32 | PB03 — General I/O |
| 腳位 33 | PB04 — General I/O |
| 腳位 34 | PB05 — General I/O |
| 腳位 35 | PB06 — General I/O |
| 腳位 36 | PB07 — General I/O |
| 腳位 37 | PB08 — General I/O |
| 腳位 38 | PB09 — General I/O |
| 腳位 39 | PB10 — General I/O |
| 腳位 40 | PB11 — General I/O |
| 腳位 41 | PB12 — General I/O |
| 腳位 42 | PB13 — General I/O |
| 腳位 43 | PB14 — General I/O |
| 腳位 44 | PB15 — General I/O |
| 腳位 45 | PB16 — General I/O |
| 腳位 46 | PB17 — General I/O |
| 腳位 47 | PB18 — General I/O |
| 腳位 48 | PB19 — General I/O |
| 腳位 49 | PB20 — General I/O |
| 腳位 50 | PB21 — General I/O |
| 腳位 51 | PB22 — General I/O |
| 腳位 52 | PB23 — General I/O |
| 腳位 53 | PB24 — General I/O |
| 腳位 54 | PB25 — General I/O |
| 腳位 55 | VDDIO — I/O supply voltage |
| 腳位 56 | GND — Ground |
| 腳位 57 | PC00 — General I/O |
| 腳位 58 | PC01 — General I/O |
| 腳位 59 | PC02 — General I/O |
| 腳位 60 | PC03 — General I/O |
| 腳位 61 | PC04 — General I/O |
| 腳位 62 | PC05 — General I/O |
| 腳位 63 | PC06 — General I/O |
| 腳位 64 | PC07 — General I/O |
| 腳位 65 | PC08 — General I/O |
| 腳位 66 | PC09 — General I/O |
| 腳位 67 | PC10 — General I/O |
| 腳位 68 | PC11 — General I/O |
| 腳位 69 | PC12 — General I/O |
| 腳位 70 | PC13 — General I/O |
| 腳位 71 | PC14 — General I/O / XOSC1 |
| 腳位 72 | PC15 — General I/O / XOSC2 |
| 腳位 73 | PC16 — General I/O |
| 腳位 74 | PC17 — General I/O |
| 腳位 75 | PC18 — General I/O |
| 腳位 76 | PC19 — General I/O |
| 腳位 77 | PC20 — General I/O |
| 腳位 78 | PC21 — General I/O |
| 腳位 79 | PC22 — General I/O |
| 腳位 80 | PC23 — General I/O |
| 腳位 81 | PC24 — General I/O |
| 腳位 82 | PC25 — General I/O |
| 腳位 83 | PC26 — General I/O |
| 腳位 84 | PC27 — General I/O |
| 腳位 85 | PC28 — General I/O |
| 腳位 86 | PC29 — General I/O |
| 腳位 87 | PC30 — General I/O |
| 腳位 88 | PC31 — General I/O |
| 腳位 89 | PD00 — General I/O |
| 腳位 90 | PD01 — General I/O |
| 腳位 91 | PD02 — General I/O |
| 腳位 92 | PD03 — General I/O |
| 腳位 93 | PD04 — General I/O |
| 腳位 94 | PD05 — General I/O |
| 腳位 95 | PD06 — General I/O |
| 腳位 96 | PD07 — General I/O |
| 腳位 97 | PD08 — General I/O |
| 腳位 98 | PD09 — General I/O |
| 腳位 99 | GND — Ground |
| 腳位 100 | VDDIO — I/O supply voltage |
典型應用
ATSAME54N19A-AU 適用於 6 應用s: Industrial HMI Touch Panel, Smart Energy Meter with Crypto Security, USB Audio Streaming Device, IoT Edge Gateway with BLE Bridge, Digital Audio Mixer Console, Automotive Aftermarket Telematics.
Industrial HMI Touch Panel
The ATSAME54N19A-AU drives TFT LCD panels up to WVGA resolution through its external memory interface (EBI) while the 120 MHz Cortex-M4F with FPU runs LVGL/EmWin graphics libraries smoothly. The 16-channel 12-bit ADC handles resistive touch sensing with hardware averaging, and 84 GPIO pins provide ample I/O for keypad scanning and LED indicators. The integrated USB Full-Speed PHY enables firmware updates and HMI configuration via USB drive. Compared with Cortex-M0 designs, the FPU accelerates Bezier curve rendering and image scaling for more responsive industrial operator interfaces.
推薦
Smart Energy Meter with Crypto Security
The ATSAME54N19A-AU measures voltage and current via its 12-bit 1 Msps ADC for Class 1 energy metering accuracy, while the Cortex-M4F DSP extensions perform real-time FFT harmonic analysis. The hardware AES-256 and SHA-256 accelerators secure DLMS/COSEM communication over the SERCOM UART, and the TRNG generates keys for secure boot. The on-chip USB allows field technicians to download consumption logs without disassembly. Wide 1.62 V to 3.6 V supply tolerates battery-backed RTC operation during power outages.
推薦
USB Audio Streaming Device
The ATSAME54N19A-AU streams 24-bit 96 kHz audio through its I2S interface while presenting a USB Audio Class 1.0 device to the host. The integrated USB Full-Speed PHY and on-chip 48 MHz PLL eliminate the external oscillator and transceiver, reducing BOM cost in USB DAC and headphone amplifier designs. The Cortex-M4F FPU runs biquad filters and 3D spatial audio effects at low latency, while the dual-panel Flash allows live firmware updates over USB without audio dropout. Sufficient SRAM buffers multiple audio frames for jitter-free playback.
推薦
IoT Edge Gateway with BLE Bridge
The ATSAME54N19A-AU acts as an IoT edge node aggregating data from Bluetooth Low Energy sensors via an external module connected through SERCOM UART, then forwarding processed data to the cloud over USB or Ethernet. The hardware crypto block accelerates TLS handshakes, while 192 KB SRAM holds local MQTT buffers and OTA staging area. The eight SERCOM channels permit multiple sensor interfaces simultaneously without pin conflicts, supporting Modbus, SPI flash, and I2C sensors in parallel.
推薦
Digital Audio Mixer Console
The ATSAME54N19A-AU mixes multiple I2S audio streams from external codecs, applies DSP effects via the Cortex-M4F single-precision FPU, and outputs to a USB audio interface for DAW recording. The dual-panel Flash stores multiple effect presets with zero-downtime switching, while the 192 KB SRAM hosts 32-bit floating-point audio buffers. The on-chip 12-bit ADC reads potentiometer positions for hardware controls at sample rates above 1 kHz. This MCU replaces legacy DSP chips in compact 4-channel mixers.
推薦
Automotive Aftermarket Telematics
The ATSAME54N19A-AU powers OBD-II dongles and aftermarket telematics units, reading vehicle CAN bus data via an external transceiver interfaced through SERCOM. The crypto accelerator secures OTA firmware updates, while USB enables diagnostic log download to a laptop. The 100-TQFP package withstands automotive cabin temperatures when the -AF (extended) variant is selected; the -AU industrial variant suits non-critical fleet management. Wide 3.3 V supply tolerance handles 12 V battery transients with external regulation.
推薦
推薦產品摘要
工程參考資料，適用於 ATSAME54N19A-AU — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ATSAME54N19A-AF | ATSAME54N20A-AU | ATSAME54N19A-AUT | ATSAME54P19A-AU | ATSAME51N19A-AU |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 100-TQFP (14x14) | 100-TQFP (14x14) - same | 100-TQFP (14x14) - same | 100-TQFP (14x14) - same | 100-TQFP (14x14) - same | 100-TQFP (14x14) - 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 |
| Flash | 512 KB | 512 KB | 1 MB (+100%) | 512 KB | 512 KB | 512 KB |
| SRAM | 192 KB | 192 KB | 256 KB (+33%) | 192 KB | 192 KB | 192 KB |
| Operating Temperature | -40C to +85C | -40C to +125C (extended) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| USB | USB 2.0 FS with on-chip PHY | USB 2.0 FS with on-chip PHY | USB 2.0 FS with on-chip PHY | USB 2.0 FS with on-chip PHY | USB 2.0 FS with on-chip PHY | USB 2.0 FS with on-chip PHY |
| Crypto Accelerator | AES/SHA/TRNG | AES/SHA/TRNG | AES/SHA/TRNG | AES/SHA/TRNG | AES/SHA/TRNG | AES/SHA/TRNG |
| I2S Audio | Yes | Yes | Yes | Yes | Yes | No (-20%) |
主要差異化特點
- Integrated USB 2.0 Full-Speed PHY (對比ATSAME51N19A-AU)
- Dual-Panel Flash with ECC (對比ATSAME54N19A-AUT)
- 512 KB Flash at 120 MHz Cortex-M4F (對比ATSAME53N20A-AU)
設計說明
Decoupling is critical for the ATSAME54N19A-AU given its 120 MHz operation. Place a 100 nF X7R ceramic capacitor and a 4.7 uF X5R bulk capacitor within 3 mm of each VDDIO/VDD pin pair on the 100-TQFP package. The internal 1.2 V core LDO requires a 1 uF capacitor on the VDDLC pin. Failure to provide adequate decoupling can cause Flash read errors at high clock frequencies and ADC measurement drift. Use multiple vias to a dedicated ground pour for return currents.
Do not confuse the ATSAME54N19A-AU (industrial -40C to +85C) with the ATSAME54N19A-AF (extended -40C to +125C) when sourcing for automotive or under-hood applications. Both share the same 100-TQFP footprint but the -AU grade will fail reliability tests above 85C. Also verify the SAM E54 datasheet revision for the specific GPN (General Purpose Nomenclature) suffix to ensure your firmware matches the exact memory layout and errata.
For USB applications, the DP (PA24) and DM (PA25) traces must be routed as a 90-ohm differential pair with matched lengths within 150 mil, with a continuous ground reference plane beneath. Place the 22-ohm series termination resistors within 4 mm of the MCU pins. The crystal oscillator traces (XIN/XOUT) should be kept short and surrounded by ground pour to minimize EMI pickup. Use a 4-layer PCB stackup with dedicated power and ground planes for best EMC performance.
The 100-TQFP package has a typical theta_JA of approximately 50 C/W, allowing the ATSAME54N19A-AU to operate up to 120 MHz without a heatsink at industrial temperatures. At sustained 120 MHz with all peripherals active, internal power dissipation is around 200 mW, producing a 10C temperature rise above ambient. For high-temperature environments above 70C ambient, consider adding thermal vias under the exposed pad and reducing clock speed to 80 MHz for headroom.
合規資訊
RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - choose ATSAME54N19A-AF (extended temp) or other -CF variants for automotive applications. Lead-free and halogen-free per Microchip material declaration.
