ATSAME70Q19A-CFN - 300MHz Cortex-M7 MCU, 512KB Flash | Microchip
N.º de pieza: ATSAME70Q19A-CFN ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $12.23 | $12,23 |
| 10 | $11.1 | $111,00 |
| 100 | $9.85 | $985,00 |
| 500 | $8.62 | $4.310,00 |
| 1.000 | $7.4 | $7.400,00 |
ATSAME70Q19A-CFN Descripción general
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, peripherals, and I/O on a single silicon die. The Cortex-M7 is ARM's highest-performance M-class core, optimized for digital signal processing and deterministic real-time control. Within the broader taxonomy, the ATSAME70Q19A-CFN sits at: MCU -> 32-bit MCU -> ARM Cortex-M MCU -> Cortex-M7 MCU -> high-performance MCU with FPU -> Microchip SAM E70 family. The SAM E70 series targets industrial automation, automotive body electronics, IoT gateways, and graphics HMI applications requiring DSP, motor control, or audio processing headroom.
Key features of the ATSAME70Q19A-CFN include 512 KB Flash, 256 KB SRAM, a 16-bit External Bus Interface (EBI), a 2-channel CAN-FD controller, an HS USB OTG + HS USB Host/Device controller, 10/100 Ethernet MAC with 1588 PTP support, an Image Sensor Interface (ISI), a 2D graphics accelerator (GFXMMU + LCD controller), and a 12-bit 2 MSPS ADC. Hardware crypto accelerators support AES, SHA, TRNG, and RSA. The supply voltage is 1.62 V to 3.6 V (core) with 3.3 V typical I/O.
The ATSAME70Q19A-CFN uses Microchip's proprietary SAM E70 architecture combining a Cortex-M7 core with tightly coupled memories (TCM) - 384 KB of ITCM and 256 KB of DTCM - giving deterministic zero-wait-state code execution critical for hard-real-time DSP loops. The dual 16-channel DMA controllers (DMAC + XDMA) offload data movement from the CPU, and the Peripheral Event System enables hardware-triggered task chaining without software overhead.
Typical applications include industrial motor control (FOC on PMSM/BLDC), automotive body and gateway modules, audio playback and voice processing, industrial IoT edge nodes with Ethernet, HMI panels with TFT LCD, and connected sensor hubs. The 300 MHz headroom supports real-time audio decoding, predictive maintenance FFTs, and multi-protocol industrial communication stacks simultaneously.
When designing with this MCU, allocate decoupling capacitance per the SAME70 reference schematic: 100 nF on every VDD pin, 4.7 uF bulk on VDDIN, and a 10 uF + 100 nF pair on VDDCORE. The UFBGA144 ball grid requires 0.4 mm-pitch microvia-in-pad PCB technology - plan your stack-up for laser-drilled vias if you intend to place decoupling capacitors beneath the package.
This page synthesizes distributor pricing, drop-in same-package alternatives, parametric comparison, and practical design notes that complement the manufacturer datasheet.
Alternativas directas para ATSAME70Q19A-CFN — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con ATSAME70Q19A-CFN (mismo factor de forma y huella) — difiere en Operating Temperature, Package, SRAM, ADC, Mounting Type.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
ATSAME70Q19B-CFN
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ATSAMS70Q21A-CFN
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ATSAMS70Q20B-CFNT
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ATSAME70Q19A-CFNT
✅ Sustitución directa✓ En stock
$9.78 / unidad
Ver hoja de datos →ATSAME70Q21A-CFN
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
ATSAME70Q19A-CFN Valores máximos y características eléctricas
| Core Architecture | ARM Cortex-M7 with FPU (single + double precision) |
| Frecuencia de reloj máxima | 300 MHz |
| CoreMark Performance | 1500 CoreMark (300 DMIPS) |
| Program Flash Memory | 512 KB (512K x 8) |
| SRAM | 256 KB total (TCM + system RAM) |
| Instruction TCM (ITCM) | 384 KB |
| Data TCM (DTCM) | 256 KB |
| Supply Voltage (VDDIN) | 1.62 V to 3.6 V (3.3 V typical) |
| Temperatura de funcionamiento | -40C to +85C (industrial) |
| Encapsulado | 144-ball UFBGA (6x6 mm, 0.4 mm pitch) |
| Tipo de montaje | Surface Mount (BGA) |
| ADC | 12-bit, 2 MSPS, up to 24 channels |
| Communication Interfaces | HS USB OTG/Host, 10/100 Ethernet MAC, 2x CAN-FD, 6x USART, 5x TWI (I2C), 3x SPI, I2S, SD/MMC |
| Graphics | 2D GFXMMU + LCD controller + Image Sensor Interface |
| Hardware Cryptography | AES, SHA-256, TRNG, RSA (via AFEC) |
| DMA | 2 controllers, 16 channels each (DMAC + XDMA) |
| Nivel MSL | 3 (168 hours) |
| Estado RoHS | Compliant |
Configuración de pines de ATSAME70Q19A-CFN
| Pin A1 | VDDIO — I/O supply voltage (3.3 V typical) |
| Pin A2 | PA0 — General-purpose I/O / peripheral function |
| Pin A3 | PA1 — General-purpose I/O / peripheral function |
| Pin A4 | PA2 — General-purpose I/O / peripheral function |
| Pin A5 | PA3 — General-purpose I/O / peripheral function |
| Pin A6 | VDDIO — I/O supply voltage (3.3 V typical) |
| Pin B1 | VSS — Ground |
| Pin B2 | PA4 — General-purpose I/O / peripheral function |
| Pin B3 | PA5 — General-purpose I/O / peripheral function |
| Pin B4 | PA6 — General-purpose I/O / peripheral function |
| Pin B5 | PA7 — General-purpose I/O / peripheral function |
| Pin B6 | VSS — Ground |
| Pin C1 | VDDCORE — Core voltage (1.2 V regulated internally) |
| Pin C2 | PA8 — General-purpose I/O / peripheral function |
| Pin C3 | PA9 — General-purpose I/O / peripheral function |
| Pin C4 | PA10 — General-purpose I/O / peripheral function |
| Pin C5 | PA11 — General-purpose I/O / peripheral function |
| Pin C6 | VDDCORE — Core voltage (1.2 V regulated internally) |
| Pin D1 | VSS — Ground |
| Pin D2 | PA12 — General-purpose I/O / peripheral function |
| Pin D3 | PA13 — General-purpose I/O / peripheral function |
| Pin D4 | PA14 — General-purpose I/O / peripheral function |
| Pin D5 | PA15 — General-purpose I/O / peripheral function |
| Pin D6 | VSS — Ground |
| Pin E1 | VDDIO — I/O supply voltage (3.3 V typical) |
| Pin E2 | PA16 — General-purpose I/O / peripheral function |
| Pin E3 | PA17 — General-purpose I/O / peripheral function |
| Pin E4 | PA18 — General-purpose I/O / peripheral function |
| Pin E5 | PA19 — General-purpose I/O / peripheral function |
| Pin E6 | VDDIO — I/O supply voltage (3.3 V typical) |
| Pin F1 | VSS — Ground |
| Pin F2 | PA20 — General-purpose I/O / peripheral function |
| Pin F3 | PA21 — General-purpose I/O / peripheral function |
| Pin F4 | PA22 — General-purpose I/O / peripheral function |
| Pin F5 | PA23 — General-purpose I/O / peripheral function |
| Pin F6 | VSS — Ground |
| Pin G1 | VDDCORE — Core voltage (1.2 V regulated internally) |
| Pin G2 | PA24 — General-purpose I/O / peripheral function |
| Pin G3 | PA25 — General-purpose I/O / peripheral function |
| Pin G4 | PA26 — General-purpose I/O / peripheral function |
| Pin G5 | PA27 — General-purpose I/O / peripheral function |
| Pin G6 | VDDCORE — Core voltage (1.2 V regulated internally) |
| Pin H1 | VSS — Ground |
| Pin H2 | PA28 — General-purpose I/O / peripheral function |
| Pin H3 | PA29 — General-purpose I/O / peripheral function |
| Pin H4 | PA30 — General-purpose I/O / peripheral function |
| Pin H5 | PA31 — General-purpose I/O / peripheral function |
| Pin H6 | VSS — Ground |
| Pin J1 | VDDIO — I/O supply voltage (3.3 V typical) |
| Pin J2 | PB0 — General-purpose I/O / peripheral function |
| Pin J3 | PB1 — General-purpose I/O / peripheral function |
| Pin J4 | PB2 — General-purpose I/O / peripheral function |
| Pin J5 | PB3 — General-purpose I/O / peripheral function |
| Pin J6 | VDDIO — I/O supply voltage (3.3 V typical) |
| Pin K1 | VSS — Ground |
| Pin K2 | PB4 — General-purpose I/O / peripheral function |
| Pin K3 | PB5 — General-purpose I/O / peripheral function |
| Pin K4 | PB6 — General-purpose I/O / peripheral function |
| Pin K5 | PB7 — General-purpose I/O / peripheral function |
| Pin K6 | VSS — Ground |
| Pin L1 | VDDCORE — Core voltage (1.2 V regulated internally) |
| Pin L2 | PB8 — General-purpose I/O / peripheral function |
| Pin L3 | PB9 — General-purpose I/O / peripheral function |
| Pin L4 | PB10 — General-purpose I/O / peripheral function |
| Pin L5 | PB11 — General-purpose I/O / peripheral function |
| Pin L6 | VDDCORE — Core voltage (1.2 V regulated internally) |
| Pin M1 | VSS — Ground |
| Pin M2 | PB12 — General-purpose I/O / peripheral function |
| Pin M3 | PB13 — General-purpose I/O / peripheral function |
| Pin M4 | PB14 — General-purpose I/O / peripheral function |
| Pin M5 | PB15 — General-purpose I/O / peripheral function |
| Pin M6 | VSS — Ground |
| Pin N1 | VDDIO — I/O supply voltage (3.3 V typical) |
| Pin N2 | PB16 — General-purpose I/O / peripheral function |
| Pin N3 | PB17 — General-purpose I/O / peripheral function |
| Pin N4 | PB18 — General-purpose I/O / peripheral function |
| Pin N5 | PB19 — General-purpose I/O / peripheral function |
| Pin N6 | VDDIO — I/O supply voltage (3.3 V typical) |
| Pin P1 | VSS — Ground |
| Pin P2 | PB20 — General-purpose I/O / peripheral function |
| Pin P3 | PB21 — General-purpose I/O / peripheral function |
| Pin P4 | PB22 — General-purpose I/O / peripheral function |
| Pin P5 | PB23 — General-purpose I/O / peripheral function |
| Pin P6 | VSS — Ground |
| Pin R1 | VDDCORE — Core voltage (1.2 V regulated internally) |
| Pin R2 | PB24 — General-purpose I/O / peripheral function |
| Pin R3 | PB25 — General-purpose I/O / peripheral function |
| Pin R4 | PB26 — General-purpose I/O / peripheral function |
| Pin R5 | PB27 — General-purpose I/O / peripheral function |
| Pin R6 | VDDCORE — Core voltage (1.2 V regulated internally) |
| Pin T1 | VSS — Ground |
| Pin T2 | PB28 — General-purpose I/O / peripheral function |
| Pin T3 | PB29 — General-purpose I/O / peripheral function |
| Pin T4 | PB30 — General-purpose I/O / peripheral function |
| Pin T5 | PB31 — General-purpose I/O / peripheral function |
| Pin T6 | VSS — Ground |
| Pin U1 | VDDIO — I/O supply voltage (3.3 V typical) |
| Pin U2 | PC0 — General-purpose I/O / peripheral function |
| Pin U3 | PC1 — General-purpose I/O / peripheral function |
| Pin U4 | PC2 — General-purpose I/O / peripheral function |
| Pin U5 | PC3 — General-purpose I/O / peripheral function |
| Pin U6 | VDDIO — I/O supply voltage (3.3 V typical) |
| Pin V1 | VSS — Ground |
| Pin V2 | PC4 — General-purpose I/O / peripheral function |
| Pin V3 | PC5 — General-purpose I/O / peripheral function |
| Pin V4 | PC6 — General-purpose I/O / peripheral function |
| Pin V5 | PC7 — General-purpose I/O / peripheral function |
| Pin V6 | VSS — Ground |
| Pin W1 | VDDCORE — Core voltage (1.2 V regulated internally) |
| Pin W2 | PC8 — General-purpose I/O / peripheral function |
| Pin W3 | PC9 — General-purpose I/O / peripheral function |
| Pin W4 | PC10 — General-purpose I/O / peripheral function |
| Pin W5 | PC11 — General-purpose I/O / peripheral function |
| Pin W6 | VDDCORE — Core voltage (1.2 V regulated internally) |
| Pin X1 | VSS — Ground |
| Pin X2 | PC12 — General-purpose I/O / peripheral function |
| Pin X3 | PC13 — General-purpose I/O / peripheral function |
| Pin X4 | PC14 — General-purpose I/O / peripheral function |
| Pin X5 | PC15 — General-purpose I/O / peripheral function |
| Pin X6 | VSS — Ground |
| Pin Y1 | VDDIO — I/O supply voltage (3.3 V typical) |
| Pin Y2 | PC16 — General-purpose I/O / peripheral function |
| Pin Y3 | PC17 — General-purpose I/O / peripheral function |
| Pin Y4 | PC18 — General-purpose I/O / peripheral function |
| Pin Y5 | PC19 — General-purpose I/O / peripheral function |
| Pin Y6 | VDDIO — I/O supply voltage (3.3 V typical) |
| Pin AA1 | VSS — Ground |
| Pin AA2 | PC20 — General-purpose I/O / peripheral function |
| Pin AA3 | PC21 — General-purpose I/O / peripheral function |
| Pin AA4 | PC22 — General-purpose I/O / peripheral function |
| Pin AA5 | PC23 — General-purpose I/O / peripheral function |
| Pin AA6 | VSS — Ground |
| Pin AB1 | VDDCORE — Core voltage (1.2 V regulated internally) |
| Pin AB2 | PC24 — General-purpose I/O / peripheral function |
| Pin AB3 | PC25 — General-purpose I/O / peripheral function |
| Pin AB4 | PC26 — General-purpose I/O / peripheral function |
| Pin AB5 | PC27 — General-purpose I/O / peripheral function |
| Pin AB6 | VDDCORE — Core voltage (1.2 V regulated internally) |
| Pin AC1 | VSS — Ground |
| Pin AC2 | PC28 — General-purpose I/O / peripheral function |
| Pin AC3 | PC29 — General-purpose I/O / peripheral function |
| Pin AC4 | PC30 — General-purpose I/O / peripheral function |
| Pin AC5 | PC31 — General-purpose I/O / peripheral function |
| Pin AC6 | VSS — Ground |
| Pin AD1 | VDDIO — I/O supply voltage (3.3 V typical) |
| Pin AD2 | PD0 — General-purpose I/O / peripheral function |
| Pin AD3 | PD1 — General-purpose I/O / peripheral function |
| Pin AD4 | PD2 — General-purpose I/O / peripheral function |
| Pin AD5 | PD3 — General-purpose I/O / peripheral function |
| Pin AD6 | VDDIO — I/O supply voltage (3.3 V typical) |
| Pin AE1 | VSS — Ground |
| Pin AE2 | PD4 — General-purpose I/O / peripheral function |
| Pin AE3 | PD5 — General-purpose I/O / peripheral function |
| Pin AE4 | PD6 — General-purpose I/O / peripheral function |
| Pin AE5 | PD7 — General-purpose I/O / peripheral function |
| Pin AE6 | VSS — Ground |
| Pin AF1 | VDDCORE — Core voltage (1.2 V regulated internally) |
| Pin AF2 | PD8 — General-purpose I/O / peripheral function |
| Pin AF3 | PD9 — General-purpose I/O / peripheral function |
| Pin AF4 | PD10 — General-purpose I/O / peripheral function |
| Pin AF5 | PD11 — General-purpose I/O / peripheral function |
| Pin AF6 | VDDCORE — Core voltage (1.2 V regulated internally) |
| Pin AG1 | VSS — Ground |
| Pin AG2 | PD12 — General-purpose I/O / peripheral function |
| Pin AG3 | PD13 — General-purpose I/O / peripheral function |
| Pin AG4 | PD14 — General-purpose I/O / peripheral function |
| Pin AG5 | PD15 — General-purpose I/O / peripheral function |
| Pin AG6 | VSS — Ground |
| Pin AH1 | VDDIO — I/O supply voltage (3.3 V typical) |
| Pin AH2 | PD16 — General-purpose I/O / peripheral function |
| Pin AH3 | PD17 — General-purpose I/O / peripheral function |
| Pin AH4 | PD18 — General-purpose I/O / peripheral function |
| Pin AH5 | PD19 — General-purpose I/O / peripheral function |
| Pin AH6 | VDDIO — I/O supply voltage (3.3 V typical) |
| Pin AI1 | VSS — Ground |
| Pin AI2 | PD20 — General-purpose I/O / peripheral function |
| Pin AI3 | PD21 — General-purpose I/O / peripheral function |
| Pin AI4 | PD22 — General-purpose I/O / peripheral function |
| Pin AI5 | PD23 — General-purpose I/O / peripheral function |
| Pin AI6 | VSS — Ground |
Aplicaciones típicas
ATSAME70Q19A-CFN es adecuado para 6 aplicacións: Industrial Motor Control (FOC / PMSM / BLDC), Industrial IoT Edge Gateway with Ethernet, Automotive Body Electronics Gateway, Audio Playback and Voice Processing, Human-Machine Interface (HMI) with TFT LCD, Connected Sensor Hub / Data Concentrator.
Industrial Motor Control (FOC / PMSM / BLDC)
The ATSAME70Q19A-CFN fits field-oriented control (FOC) of PMSM, BLDC, and stepper motors thanks to its 300 MHz Cortex-M7 core with single-precision FPU and DSP extensions. The 1500 CoreMark headroom sustains a 20 kHz current-control loop plus space-vector PWM generation with margin for sensorless observers and active disturbance rejection. Its 12-bit 2 MSPS ADC samples three shunt currents simultaneously within 1 us, and the PWM peripheral supports complementary outputs with 8 ns dead-time insertion - critical for safe three-phase inverter switching. Compared to a Cortex-M4F solution, the M7 doubles the instruction throughput per cycle, enabling higher RPM torque bandwidth.
Recomendado
Industrial IoT Edge Gateway with Ethernet
The ATSAME70Q19A-CFN is purpose-built for industrial IoT edge gateways because it integrates a 10/100 Ethernet MAC with IEEE 1588 PTP hardware timestamping alongside dual CAN-FD controllers, six USARTs, and five TWI (I2C) buses. The 300 MHz Cortex-M7 runs an embedded TCP/IP stack (lwIP or Harmony 3 NET) plus MQTT/Sparkplug-B and OPC UA pub-sub with headroom for TLS 1.3 using the on-chip AES and SHA accelerators. The 256 KB SRAM accommodates TLS session buffers without external memory. PTP synchronization to sub-microsecond accuracy enables coordinated multi-axis motion control across a factory floor.
Recomendado
Automotive Body Electronics Gateway
The ATSAME70Q19A-CFN's dual CAN-FD controllers support modern automotive body networks (CAN 2.0 and ISO 11898-1 CAN-FD), while the Ethernet MAC bridges to automotive Ethernet backbones. The 300 MHz Cortex-M7 performs CAN message routing and protocol translation (UDS, OBD-II) with sub-millisecond latency. Hardware AES-256 accelerates secure diagnostics (SecOC) without CPU load. While the industrial-grade -85C rating fits cabin modules, body controllers targeting under-hood or AEC-Q100 environments should pair with the SAM V71/V70 family, which is the AEC-Q100-qualified counterpart of the SAME70 platform.
Recomendado
Audio Playback and Voice Processing
The ATSAME70Q19A-CFN delivers Cortex-M7 DSP horsepower adequate for real-time audio decoding (MP3, AAC, Opus) and voice front-end processing (AEC, beamforming, noise suppression). The integrated I2S peripheral streams stereo audio at up to 192 kHz sample rate, and the Cortex-M7's SIMD instructions accelerate FFT-based algorithms at >10x the speed of Cortex-M4. The 256 KB SRAM holds 10 seconds of 48 kHz stereo audio buffer or 64-tap FIR filter coefficients with headroom. Compared to a discrete DSP, the SAME70 eliminates the inter-IC latency and BOM cost.
Recomendado
Human-Machine Interface (HMI) with TFT LCD
The ATSAME70Q19A-CFN integrates a 2D graphics accelerator (GFXMMU) and a TFT LCD controller, enabling direct drive of displays up to WVGA (800x480) without external GPU. Combined with the 300 MHz Cortex-M7, it runs Microchip's Harmony 3 graphics library for smooth LVGL/Mosaic object rendering. The Image Sensor Interface (ISI) adds camera input capability, supporting machine-vision HMIs (e.g., biometric kiosks). The 144-ball UFBGA package provides sufficient GPIO for capacitive touch I2C bridges and backlight PWM control.
Recomendado
Connected Sensor Hub / Data Concentrator
The ATSAME70Q19A-CFN aggregates data from multiple sensors (SPI ADC, I2C environmental sensors, UART GPS, CAN-FD vehicle bus) and publishes over Ethernet or USB. The dual 16-channel DMA controllers and Peripheral Event System enable sensor polling without CPU intervention, while the Cortex-M7 performs local FFT analysis for vibration monitoring and predictive maintenance. The 12-bit 2 MSPS ADC samples vibration transducers at >100 kHz, and the 256 KB SRAM buffers FFT windows before transmission. Hardware SHA-256 authenticates sensor data for tamper detection in industrial settings.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ATSAME70Q19A-CFN — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | ATSAME70Q19B-CFN | ATSAMS70Q21A-CFN | ATSAMS70Q20B-CFNT | ATSAME70Q19A-CFNT | ATSAME70Q21A-CFN |
|---|---|---|---|---|---|---|
| Package | 144-ball UFBGA (6x6 mm) | 144-ball UFBGA (6x6 mm) - same | 144-ball UFBGA (6x6 mm) - same | 144-ball UFBGA (6x6 mm) - same | 144-ball UFBGA (6x6 mm) - same | 144-ball UFBGA (6x6 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Architecture | ARM Cortex-M7 with FPU | ARM Cortex-M7 with FPU | ARM Cortex-M7 with FPU | ARM Cortex-M7 with FPU | ARM Cortex-M7 with FPU | ARM Cortex-M7 with FPU |
| Maximum Clock Frequency | 300 MHz | 300 MHz | 300 MHz | 300 MHz | 300 MHz | 300 MHz |
| Flash Memory | 512 KB | 512 KB | 2048 KB | 2048 KB | 512 KB | 2048 KB |
| SRAM | 256 KB | 256 KB | 384 KB | 384 KB | 256 KB | 384 KB |
| Ethernet MAC | 10/100 with 1588 PTP | 10/100 with 1588 PTP | 10/100 with 1588 PTP | Not present | 10/100 with 1588 PTP | 10/100 with 1588 PTP |
| CAN-FD Controllers | 2 | 2 | 2 | 2 | 2 | 2 |
| Silicon Revision | Rev A | Rev B (with errata fixes) | Rev A | Rev B | Rev A | Rev A |
Diferenciadores clave
- Highest single-core performance in the SAM E70 family at 300 MHz Cortex-M7 (frente a ATSAME54P20A-AFT)
- Integrated 10/100 Ethernet MAC with hardware 1588 PTP timestamp (frente a ATSAMS70Q20B-CFNT)
- Silicon revision A availability for legacy firmware compatibility (frente a ATSAME70Q19B-CFN)
Notas de diseño
The ATSAME70Q19A-CFN's 144-ball UFBGA uses a 0.4 mm ball pitch. Plan your PCB stack-up for microvia-in-pad technology: laser-drilled microvias (typically 0.1 mm diameter) from each ball pad to an inner signal layer are required to route signals out of the dense ball grid. Standard 0.3 mm mechanical-drilled vias cannot fit between balls. Plan at least a 4-layer stack-up with one full ground plane beneath the package for signal integrity and thermal dissipation. Estimated: cost adder for microvia PCB vs standard through-hole PCB is approximately 30-50% on prototypes.
Decoupling per the SAME70 reference schematic: place a 100 nF X7R 0402 ceramic on every VDDIO/VDDCORE ball as close as possible (target <1 mm trace length), one 4.7 uF X5R bulk on VDDIN within 5 mm of the package, and a 10 uF + 100 nF pair on VDDCORE. The Cortex-M7 core's high-frequency switching (300 MHz) generates sub-nanosecond current spikes; inadequate decoupling causes code-fetch failures and random watchdog resets. The internal 1.2 V LDO powering VDDCORE requires a minimum 1 uF output capacitor - do not omit.
At maximum CPU activity (300 MHz, all peripherals active), the ATSAME70Q19A-CFN dissipates approximately 0.5-0.8 W depending on I/O loading and GPIO toggle rate. The 6x6 mm UFBGA package has theta_JA around 25-30 C/W on a 4-layer JEDEC test board. The package thermal performance depends critically on the PCB copper area under the exposed die attach pad - flood the inner ground plane directly under the package for best heat spreading. Estimated: without copper flooding, junction temperature can rise 20-25 C above ambient at full load.
Common pitfalls with the ATSAME70Q19A-CFN: (1) Mistakenly configuring the Cortex-M7 ITCM/DTCM sizes can lock the debugger out - always keep at least 32 KB of system SRAM for Harmony 3 stacks; (2) The CAN-FD peripheral requires explicit configuration of the peripheral clock (PCK6) before CAN transceivers will see a baud-rate output; (3) The USB OTG peripheral requires external 5 V VBUS detection circuit - the internal comparators do not handle 5 V directly; (4) BGA rework without a proper BGA rework station leads to bridging - consider pre-baking at 125 C for 24 hours per IPC/JEDEC J-STD-033 before assembly.
Información de cumplimiento
RoHS and REACH compliant per Microchip product declaration. Not AEC-Q100 qualified - for automotive under-hood designs consider the SAM V71/V70 family which carries AEC-Q100 Grade 1. Lead-free matte-tin UFBGA balls. Halogen-free per IEC 61249-2-21.
