ATSAME70J19A-AN - 300MHz Cortex-M7 MCU 512KB Flash | Microchip
料号： ATSAME70J19A-AN ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $8.42 | $8.42 |
| 10 | $7.58 | $75.80 |
| 100 | $6.79 | $679.00 |
| 500 | $6.04 | $3,020.00 |
| 1,000 | $5.36 | $5,360.00 |
ATSAME70J19A-AN 概述
What is a Cortex-M7 microcontroller? An ARM Cortex-M7 is a high-performance 32-bit microcontroller core designed for applications requiring DSP-class signal processing, complex control loops, and floating-point arithmetic. Within the broader taxonomy, the Cortex-M7 sits at the top of the Cortex-M family (above Cortex-M4/M3/M0/M0+), and the SAM E70 family sits within Microchip's portfolio of Cortex-M7-based microcontrollers, alongside the SAME70 and SAMS70 series. The Cortex-M7's superscalar pipeline, dual-issue load/store, and tightly-coupled memory enable deterministic real-time response at high clock rates.
Key features of the ATSAME70J19A-AN include a 300 MHz maximum CPU clock, 16 KB instruction cache and 16 KB data cache, single-precision/double-precision hardware floating point unit (FPU), and a Memory Protection Unit (MPU). The device also provides 5x USART, 5x SPI, 4x TWI (I2C), 3x CAN-FD, 1x HS USB, 1x 10/100 Ethernet MAC, and a 12-bit ADC with up to 24 channels. Operating voltage is 1.62 V to 3.6 V, with industrial temperature grade support from -40 C to +85 C.
The ATSAME70J19A-AN uses a Harvard-bus architecture with branch prediction, prefetch buffers, and tightly-coupled SRAM to minimize flash wait states at full 300 MHz operation. The peripheral DMA controller (PDC) and separate XDMAC provide high-bandwidth peripheral-to-memory transfers without CPU intervention, enabling deterministic real-time control. The integrated 16-bit SMC supports PSRAM, NOR Flash, and NAND Flash external memories, making the device suitable for systems requiring external storage.
Typical applications include industrial automation controllers, building automation gateways, smart energy metering, point-of-sale (POS) terminals, medical instrumentation, and audio/voice processing systems. The HS USB with on-chip PHY, Ethernet MAC, and CAN-FD make it particularly well suited to industrial networking and IoT edge nodes requiring multiple wired connectivity interfaces.
When designing with this device, allocate decoupling capacitors close to every VDD pin and provide a clean 3.3 V supply with adequate bulk capacitance. Connect the NRST line to the reset supervisor and ensure the trace to the 32.768 kHz crystal is short and guarded by ground. Use the XDMAC for high-throughput peripheral transfers to minimize CPU interrupt load.
This page synthesizes distributor pricing, drop-in SAME70 family alternatives, and practical design notes not found in the standalone manufacturer datasheet PDF.
直接替换替代料： ATSAME70J19A-AN ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： ATSAME70J19A-AN （相同外形与封装尺寸） ——差异在于 Operating Temperature, Package, ADC, Mounting Type, Core Architecture.
快速对比工具——选择替代料号进行并排对比：
ATSAMS70J19A-AN
✅ 直接替换✓ 有现货
$8.1 / 个
查看数据手册 →ATSAME70J19A-AAB
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
ATSAME70J19A-ANT
✅ 直接替换✓ 有现货
$9.2 / 个
查看数据手册 →ATSAME70N19A-AN
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$6.55 / 个
查看数据手册 →ATSAME70J19A-AN 最大额定值与电气特性
| Core | ARM Cortex-M7 with FPU |
| Maximum CPU Clock | 300 MHz |
| Flash Memory | 512 KB (512K x 8) |
| SRAM | 256 KB |
| Instruction Cache | 16 KB |
| Data Cache | 16 KB |
| Operating Voltage | 1.62 V to 3.6 V |
| 工作温度 | -40 C to +85 C (industrial) |
| 封装 | 64-LQFP (10x10 mm) |
| 安装类型 | Surface Mount |
| ADC | 12-bit, up to 24 channels |
| Communication Interfaces | 5x USART, 5x SPI, 4x TWI (I2C), 3x CAN-FD, 1x HS USB, 1x 10/100 Ethernet |
| FPU | Single and Double Precision |
| RoHS 状态 | Compliant |
| Lead-Free | Yes |
ATSAME70J19A-AN 引脚配置
| 引脚 1 | PD0 — General-purpose I/O / TWI0 data line (TWD0) |
| 引脚 2 | PD1 — General-purpose I/O / TWI0 clock line (TWCK0) |
| 引脚 3 | PD2 — General-purpose I/O / UART0 RX |
| 引脚 4 | PD3 — General-purpose I/O / UART0 TX |
| 引脚 5 | PD4 — General-purpose I/O / AFEC0 input |
| 引脚 6 | PD5 — General-purpose I/O / AFEC0 input |
| 引脚 7 | PD6 — General-purpose I/O / AFEC0 input |
| 引脚 8 | PD7 — General-purpose I/O / AFEC0 input |
| 引脚 9 | VDDIO — I/O supply voltage (1.62 V to 3.6 V) |
| 引脚 10 | VSSIO — I/O ground reference |
| 引脚 11 | PD8 — General-purpose I/O / SPI0 NPCS0 |
| 引脚 12 | PD9 — General-purpose I/O / SPI0 NPCS1 |
| 引脚 13 | PD10 — General-purpose I/O / SPI0 NPCS2 |
| 引脚 14 | PD11 — General-purpose I/O / SPI0 NPCS3 |
| 引脚 15 | PD12 — General-purpose I/O / SPI0 MISO |
| 引脚 16 | PD13 — General-purpose I/O / SPI0 MOSI |
| 引脚 17 | PD14 — General-purpose I/O / SPI0 SPCK |
| 引脚 18 | PD15 — General-purpose I/O |
| 引脚 19 | VDDIO — I/O supply voltage (1.62 V to 3.6 V) |
| 引脚 20 | VSSIO — I/O ground reference |
| 引脚 21 | PA0 — General-purpose I/O / I2SC0 MCLK |
| 引脚 22 | PA1 — General-purpose I/O / I2SC0 CK |
| 引脚 23 | PA2 — General-purpose I/O / I2SC0 WS |
| 引脚 24 | PA3 — General-purpose I/O / I2SC0 DIN |
| 引脚 25 | PA4 — General-purpose I/O / I2SC0 DOUT |
| 引脚 26 | PA5 — General-purpose I/O |
| 引脚 27 | PA6 — General-purpose I/O |
| 引脚 28 | PA7 — General-purpose I/O |
| 引脚 29 | PA8 — General-purpose I/O |
| 引脚 30 | PA9 — General-purpose I/O |
| 引脚 31 | PA10 — General-purpose I/O |
| 引脚 32 | PA11 — General-purpose I/O / HS USB D- |
| 引脚 33 | PA12 — General-purpose I/O / HS USB D+ |
| 引脚 34 | VDDIO — I/O supply voltage (1.62 V to 3.6 V) |
| 引脚 35 | VSSIO — I/O ground reference |
| 引脚 36 | PB0 — General-purpose I/O / AFEC1 input |
| 引脚 37 | PB1 — General-purpose I/O / AFEC1 input |
| 引脚 38 | PB2 — General-purpose I/O / AFEC1 input |
| 引脚 39 | PB3 — General-purpose I/O / AFEC1 input |
| 引脚 40 | PB4 — General-purpose I/O |
| 引脚 41 | PB5 — General-purpose I/O |
| 引脚 42 | PB6 — General-purpose I/O |
| 引脚 43 | PB7 — General-purpose I/O |
| 引脚 44 | PB8 — General-purpose I/O |
| 引脚 45 | PB9 — General-purpose I/O |
| 引脚 46 | PB10 — General-purpose I/O |
| 引脚 47 | PB11 — General-purpose I/O |
| 引脚 48 | PB12 — General-purpose I/O |
| 引脚 49 | PB13 — General-purpose I/O |
| 引脚 50 | PB14 — General-purpose I/O |
| 引脚 51 | VDDIO — I/O supply voltage (1.62 V to 3.6 V) |
| 引脚 52 | VSSIO — I/O ground reference |
| 引脚 53 | PC0 — General-purpose I/O |
| 引脚 54 | PC1 — General-purpose I/O |
| 引脚 55 | PC2 — General-purpose I/O |
| 引脚 56 | PC3 — General-purpose I/O |
| 引脚 57 | PC4 — General-purpose I/O |
| 引脚 58 | PC5 — General-purpose I/O |
| 引脚 59 | PC6 — General-purpose I/O |
| 引脚 60 | PC7 — General-purpose I/O |
| 引脚 61 | NRST — Active-low reset input |
| 引脚 62 | XIN — Crystal oscillator input (3-20 MHz main) |
| 引脚 63 | XOUT — Crystal oscillator output |
| 引脚 64 | VDDCORE — Core supply voltage (1.2 V typical, internal regulator) |
典型应用
ATSAME70J19A-AN 适用于 6 应用s: Industrial Automation Controllers, Building Automation Gateways, Smart Energy Metering, POS Terminals and Payment Devices, Medical Instrumentation, Audio and Voice Processing Systems.
Industrial Automation Controllers
The ATSAME70J19A-AN's 300 MHz Cortex-M7 with hardware FPU and double-precision floating-point support makes it ideal for industrial automation controllers running complex PID loops, motion control algorithms, and real-time fieldbus communication. The integrated 3x CAN-FD interfaces support modern industrial protocols such as CANopen FD, while the 10/100 Ethernet MAC enables EtherCAT slave or PROFINET connectivity. With 256 KB SRAM, the device can host a full industrial control stack including TCP/IP, Modbus, and application logic simultaneously. The 64-LQFP package fits in DIN-rail mountable PLC form factors.
推荐
Building Automation Gateways
Building automation gateways benefit from the ATSAME70J19A-AN's simultaneous Ethernet, USB, and CAN-FD connectivity, allowing the device to bridge BACnet/IP, Modbus TCP, and KNX or CAN-based fieldbus networks. The 300 MHz core is sufficient for running TLS-encrypted MQTT communication with cloud services while handling local automation logic. The 512 KB Flash stores the full gateway firmware stack including multiple protocol handlers, and the 256 KB SRAM supports concurrent TCP/IP sockets. The wide 1.62 V to 3.6 V supply range accommodates power-over-Ethernet and 24 V industrial rails with simple LDO regulation.
推荐
Smart Energy Metering
Smart electricity meters require deterministic DSP-class computation for real-time power-quality analysis and the ATSAME70J19A-AN's 300 MHz Cortex-M7 with single-precision FPU executes FFT-based harmonic analysis and RMS calculations without external DSP chips. The 12-bit ADC with up to 24 channels handles multi-phase voltage and current sampling, while the high-speed USB and Ethernet interfaces support AMR (automated meter reading) data upload. The 64-LQFP package and -40 C to +85 C industrial temperature range suit sealed meter enclosures. With 512 KB Flash, the device stores metering firmware, calibration tables, and encrypted communication stacks.
推荐
POS Terminals and Payment Devices
POS terminals benefit from the ATSAME70J19A-AN's HS USB with on-chip PHY for connecting card readers and printers, plus the Ethernet MAC for IP-based payment processing. The 300 MHz Cortex-M7 with double-precision FPU accelerates RSA and ECC cryptographic operations required for payment security. The 512 KB Flash stores the terminal application, EMV kernel, and TLS stack, while the 256 KB SRAM supports secure transaction buffers. The 64-LQFP compact form factor suits handheld and countertop terminal designs.
推荐
Medical Instrumentation
Medical instruments such as patient monitors, infusion pumps, and portable diagnostic devices benefit from the ATSAME70J19A-AN's deterministic real-time response, hardware FPU for signal processing algorithms, and rich connectivity for hospital networks. The 12-bit ADC with 24 channels supports multi-parameter vital sign acquisition, while the high-speed USB enables data export to EMR systems. The 64-LQFP package and industrial temperature range meet the operational requirements of medical environments. For battery-powered portable devices, the device's multiple low-power modes support standby current optimization.
推荐
Audio and Voice Processing Systems
The ATSAME70J19A-AN's 300 MHz Cortex-M7 with hardware FPU is well suited for audio processing applications including voice recognition, audio codec bridging, and noise cancellation. The double-precision FPU accelerates FFT-based spectral analysis and adaptive filtering algorithms in real time. The high-speed USB with on-chip PHY supports USB Audio Class 2.0 speaker and microphone interfaces, while the I2S peripheral connects to external audio codecs. With 256 KB SRAM, the device can buffer multiple audio streams simultaneously without external memory. The SAME70-specific 2D graphics LCD controller also enables integrated touchscreen HMI for audio control surfaces.
推荐
推荐产品汇总
工程参考数据： ATSAME70J19A-AN ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | ATSAMS70J19A-AN | ATSAME70J19A-AAB | ATSAME70J19A-ANT | ATSAME70N19A-AN |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 64-LQFP (10x10) | 64-LQFP (10x10) - same | 64-LQFP (10x10) - same | 64-LQFP (10x10) - same | 64-LQFP (10x10) - same |
| Core | ARM Cortex-M7 | ARM Cortex-M7 | ARM Cortex-M7 | ARM Cortex-M7 | ARM Cortex-M7 |
| Maximum CPU Clock | 300 MHz | 300 MHz | 300 MHz | 300 MHz | 300 MHz |
| Flash Memory | 512 KB | 512 KB | 512 KB | 512 KB | 512 KB |
| SRAM | 256 KB | 256 KB | 256 KB | 256 KB | 256 KB |
| 2D Graphics LCD Controller | Yes | No | Yes | Yes | Yes |
| Image Sensor Interface (ISI) | Yes | No | Yes | Yes | Yes |
关键差异点
- Has SAME70-specific 2D graphics LCD controller and Image Sensor Interface （对比 ATSAMS70J19A-AN)
- Pin-compatible with 64-LQFP SAME70 and SAMS70 family variants （对比 ATSAMS70J19A-AN)
- Higher clock speed and double-precision FPU （对比 ATSAME54N20A-AU (Cortex-M4 alternative))
设计说明
The ATSAME70J19A-AN requires two supply rails: VDDCORE (typically 1.2 V) and VDDIO (1.62 V to 3.6 V). The internal voltage regulator generates VDDCORE from VDDIO. Place a 10 uF bulk capacitor and a 100 nF decoupling capacitor close to each VDDIO pin, and a 4.7 uF capacitor on VDDCORE. Inrush current at startup can exceed 100 mA; ensure the source regulator can supply this transient without sagging. The on-chip USB transceiver requires a clean 3.3 V supply with low ripple (< 50 mV peak-to-peak) for USB signal integrity.
The 64-LQFP package with 0.5 mm pin pitch requires careful PCB layout: maintain 0.2 mm trace width between pads, use 4-layer PCB with continuous ground plane beneath the MCU, and place all decoupling capacitors on the same layer as the MCU within 3 mm of the corresponding VDD pin. The main crystal (typically 12 MHz fundamental) should be within 8 mm of the XIN/XOUT pins with short traces guarded by ground. The NRST line should include a 10 kohm pull-up to VDDIO and a 100 nF capacitor to ground for debouncing.
Common pitfalls when designing with the ATSAME70J19A-AN include: (1) Forgetting to configure the VDDCORE bulk capacitor - the internal regulator will not start without adequate output capacitance, (2) Using the same I/O pin for multiple alternate functions without proper PERIPH_MUX configuration, (3) Neglecting to enable the FPU in startup code (CP10/CP11 coprocessor access bits) which results in HardFault when executing FPU instructions, (4) Failing to set the wait states for Flash access at 300 MHz which causes erratic instruction fetches. Always start projects from MPLAB Harmony 3 code examples to avoid these issues.
合规信息
RoHS and REACH compliance confirmed via Microchip product environmental compliance documentation. AEC-Q100 not applicable - this is an industrial-grade MCU, not automotive-qualified. Choose ATSAME70J19A-AN-E for extended temperature or ATSAME70J19A-ANR for automotive grade if needed.
