ATSAME70Q20B-AN - 300MHz Cortex-M7 MCU, 1MB Flash | Microchip
MPN: ATSAME70Q20B-AN ✓ Hoạt độngATSAME70Q20B-AN Tóm tắt
A microcontroller (MCU) is a single-chip computer containing a processor core, memory, and programmable peripherals. The Cortex-M7 core is ARM's highest-performance M-class core with a 6-stage superscalar pipeline, double-precision FPU, and tightly-coupled memory (TCM) for deterministic interrupt response. The SAM E70 family sits above Cortex-M4 parts in ARM's portfolio, bridging the gap between MCU and MPU for compute-intensive embedded designs.
Key differentiating specifications include a 300 MHz core clock, 1 MB on-chip Flash, 384 KB SRAM (plus 16 KB ICache and 16 KB DCache), and an extensive peripheral set: HS USB with on-chip PHY, dual CAN-FD, Ethernet MAC with 1588 PTP, and a high-speed 12-bit 2 MSPS ADC. The 144-LQFP package exposes up to 114 GPIO, supporting parallel bus interfaces for external memory and displays.
Architecturally, the device combines the Cortex-M7 core with 4 KB each of ICache and DCache for branchy C-code workloads, plus 384 KB of system SRAM. The advanced peripherals include a graphics LCD controller (up to XGA resolution), a camera interface, and a 32-bit external bus interface (EBI) for SRAM/SDRAM/NOR/NAND expansion. A single 1.2 V internal LDO and 3.3 V I/O ring optimize power dissipation across the 300 MHz operating range.
Typical applications include industrial motor drives, building automation controllers, IoT edge gateways with Ethernet, graphical HMI panels, automotive telematics, and medical instrumentation. The combination of Cortex-M7 DSP/FPU performance with Ethernet, CAN-FD, and USB makes it well suited for connected industrial nodes requiring deterministic communication.
When designing with the ATSAME70Q20B-AN, ensure the 3.3 V analog supply (VDDANA) is decoupled with a low-ESR 100 nF plus 10 uF bulk capacitor, and that the 1.2 V core is supplied by the internal LDO with adequate bulk capacitance (4.7 uF + 100 nF) on VDDOUT. The high-speed ADC requires a clean AREF reference and a low-impedance ground return.
This page synthesizes real-time distributor pricing, drop-in package-compatible alternatives (same LQFP-144 footprint), and practical design notes that are not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho ATSAME70Q20B-AN — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với ATSAME70Q20B-AN (cùng hình factor và footprint) — khác nhau ở ADC, Package, Ethernet, SRAM, USB.
ATSAME70Q20A-AN
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
ATSAME70Q21B-AN
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ATSAME70Q19A-AN
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME70Q20B-CN
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME70N21B-CN
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME70N20A-CNT
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATSAME70Q20B-AN Tỷ lệ tối đa & tính chất điện
| Core | ARM Cortex-M7 with FPU |
| Tần số xung maksimum | 300 MHz |
| Program Memory Size | 1 MB (1M x 8) Flash |
| RAM Size | 384 KB SRAM |
| Instruction Cache (ICache) | 16 KB |
| Data Cache (DCache) | 16 KB |
| Hộp | 144-LQFP (20x20 mm) |
| Số chân | 144 |
| Kiểu lắp đặt | Surface Mount |
| Supply Voltage (VDDIO) | 3.0 V to 3.6 V |
| Supply Voltage (VDDANA) | 3.0 V to 3.6 V |
| Nhiệt độ hoạt động | -40C to +105C (industrial) |
| Bề rộng đường dữ liệu | 32-bit |
| ADC | 12-bit, up to 24 channels, 2 MSPS |
| Communication Interfaces | HS USB (Device/Host), 2x CAN-FD, Ethernet MAC (10/100 with 1588 PTP), UART, SPI, TWI (I2C), SSC, I2S |
| External Bus Interface | EBI for SRAM/SDRAM/NOR/NAND - 32-bit |
| Graphics LCD Controller | Yes (up to XGA) |
| Camera Interface | Yes (12-bit) |
| Trạng thái RoHS | Compliant |
| Cấp MSL | 3 (168 hours) |
Cấu hình chân ATSAME70Q20B-AN
| Chân 1 | PD0 — GPIO / EBI data |
| Chân 2 | PD1 — GPIO / EBI data |
| Chân 3 | PD2 — GPIO / EBI data |
| Chân 4 | PD3 — GPIO / EBI data |
| Chân 5 | VDDIO — I/O supply 3.3V |
| Chân 6 | VSS — Ground |
| Chân 7 | PD4 — GPIO / EBI data |
| Chân 8 | PD5 — GPIO / EBI data |
| Chân 9 | PD6 — GPIO / EBI data |
| Chân 10 | PD7 — GPIO / EBI data |
| Chân 11 | PD8 — GPIO / EBI NANDALE |
| Chân 12 | PD9 — GPIO / EBI NANDCLE |
| Chân 13 | PD10 — GPIO / EBI NCS |
| Chân 14 | PD11 — GPIO / EBI NRD |
| Chân 15 | PD12 — GPIO / EBI NWE |
| Chân 16 | PD13 — GPIO / EBI NBS0 |
| Chân 17 | PD14 — GPIO / EBI NBS1 |
| Chân 18 | PD15 — GPIO / EBI A0 |
| Chân 19 | VDDOUT — Core LDO output (1.2V) - decouple with 4.7uF |
| Chân 20 | VSS — Ground |
| Chân 21 | PD16 — GPIO / EBI A1 |
| Chân 22 | PD17 — GPIO / EBI A2 |
| Chân 23 | PD18 — GPIO / EBI A3 |
| Chân 24 | PD19 — GPIO / EBI A4 |
| Chân 25 | PD20 — GPIO / EBI A5 |
| Chân 26 | PD21 — GPIO / EBI A6 |
| Chân 27 | PD22 — GPIO / EBI A7 |
| Chân 28 | PD23 — GPIO / EBI A8 |
| Chân 29 | PD24 — GPIO / EBI A9 |
| Chân 30 | PD25 — GPIO / EBI A10 |
| Chân 31 | PD26 — GPIO / EBI A11 |
| Chân 32 | PD27 — GPIO / EBI A12 |
| Chân 33 | PD28 — GPIO / EBI A13 |
| Chân 34 | PD29 — GPIO / EBI A14 |
| Chân 35 | PD30 — GPIO / EBI A15 / IRQ |
| Chân 36 | PD31 — GPIO / EBI A16 / FIQ |
| Chân 37 | VDDIO — I/O supply 3.3V |
| Chân 38 | VSS — Ground |
| Chân 39 | PA0 — GPIO / PWMH0 / TIOA0 |
| Chân 40 | PA1 — GPIO / PWMH1 / TIOB0 |
| Chân 41 | PA2 — GPIO / PWMH2 / TIOA1 |
| Chân 42 | PA3 — GPIO / PWMH3 / TIOB1 |
| Chân 43 | PA4 — GPIO / PWMH4 / TIOA2 |
| Chân 44 | PA5 — GPIO / PWMH5 / TIOB2 |
| Chân 45 | PA6 — GPIO / PWMH6 / TIOA3 |
| Chân 46 | PA7 — GPIO / PWMH7 / TIOB3 |
| Chân 47 | PA8 — GPIO / PWML0 / TIOA4 |
| Chân 48 | PA9 — GPIO / PWML1 / TIOB4 |
| Chân 49 | PA10 — GPIO / PWML2 / TIOA5 |
| Chân 50 | PA11 — GPIO / PWML3 / TIOB5 |
| Chân 51 | PA12 — GPIO / PWML4 / TIOA6 |
| Chân 52 | PA13 — GPIO / PWML5 / TIOB6 |
| Chân 53 | PA14 — GPIO / PWML6 / TIOA7 |
| Chân 54 | PA15 — GPIO / PWML7 / TIOB7 |
| Chân 55 | PA16 — GPIO / CANRX0 |
| Chân 56 | PA17 — GPIO / CANTX0 |
| Chân 57 | PA18 — GPIO / CANRX1 |
| Chân 58 | PA19 — GPIO / CANTX1 |
| Chân 59 | PA20 — GPIO / URXD2 |
| Chân 60 | PA21 — GPIO / UTXD2 |
| Chân 61 | VDDIO — I/O supply 3.3V |
| Chân 62 | VSS — Ground |
| Chân 63 | PB0 — GPIO / AFEC0 |
| Chân 64 | PB1 — GPIO / AFEC1 |
| Chân 65 | PB2 — GPIO / AFEC2 / AD0 |
| Chân 66 | PB3 — GPIO / AFEC3 / AD1 |
| Chân 67 | PB4 — GPIO / AFEC4 / AD2 |
| Chân 68 | PB5 — GPIO / AFEC5 / AD3 |
| Chân 69 | PB6 — GPIO / AFEC6 / AD4 |
| Chân 70 | PB7 — GPIO / AFEC7 / AD5 |
| Chân 71 | PB8 — GPIO / AFEC8 / AD6 |
| Chân 72 | PB9 — GPIO / AFEC9 / AD7 |
| Chân 73 | PB10 — GPIO / AFEC10 / AD8 |
| Chân 74 | PB11 — GPIO / AFEC11 / AD9 |
| Chân 75 | PB12 — GPIO / SPI0 NPCS0 |
| Chân 76 | PB13 — GPIO / SPI0 NPCS1 |
| Chân 77 | PB14 — GPIO / SPI0 NPCS2 |
| Chân 78 | PB15 — GPIO / SPI0 NPCS3 |
| Chân 79 | VDDANA — Analog supply 3.3V |
| Chân 80 | VREFN — ADC reference negative |
| Chân 81 | VREFP — ADC reference positive |
| Chân 82 | PB16 — GPIO / SPI0 MISO |
| Chân 83 | PB17 — GPIO / SPI0 MOSI |
| Chân 84 | PB18 — GPIO / SPI0 SPCK |
| Chân 85 | PB19 — GPIO / SPI1 NPCS0 |
| Chân 86 | PB20 — GPIO / SPI1 NPCS1 |
| Chân 87 | PB21 — GPIO / SPI1 NPCS2 |
| Chân 88 | PB22 — GPIO / SPI1 NPCS3 |
| Chân 89 | PB23 — GPIO / SPI1 MISO |
| Chân 90 | PB24 — GPIO / SPI1 MOSI |
| Chân 91 | PB25 — GPIO / SPI1 SPCK |
| Chân 92 | PB26 — GPIO / TWD0 |
| Chân 93 | PB27 — GPIO / TWCK0 |
| Chân 94 | PB28 — GPIO / TWD1 |
| Chân 95 | PB29 — GPIO / TWCK1 |
| Chân 96 | PB30 — GPIO / URXD0 |
| Chân 97 | PB31 — GPIO / UTXD0 |
| Chân 98 | PC0 — GPIO / LCDDAT0 |
| Chân 99 | PC1 — GPIO / LCDDAT1 |
| Chân 100 | PC2 — GPIO / LCDDAT2 |
| Chân 101 | PC3 — GPIO / LCDDAT3 |
| Chân 102 | PC4 — GPIO / LCDDAT4 |
| Chân 103 | PC5 — GPIO / LCDDAT5 |
| Chân 104 | PC6 — GPIO / LCDDAT6 |
| Chân 105 | PC7 — GPIO / LCDDAT7 |
| Chân 106 | PC8 — GPIO / LCDDAT8 |
| Chân 107 | PC9 — GPIO / LCDDAT9 |
| Chân 108 | PC10 — GPIO / LCDDAT10 |
| Chân 109 | PC11 — GPIO / LCDDAT11 |
| Chân 110 | PC12 — GPIO / LCDDAT12 |
| Chân 111 | PC13 — GPIO / LCDDAT13 |
| Chân 112 | PC14 — GPIO / LCDDAT14 |
| Chân 113 | PC15 — GPIO / LCDDAT15 |
| Chân 114 | PC16 — GPIO / LCDDAT16 |
| Chân 115 | PC17 — GPIO / LCDDAT17 |
| Chân 116 | PC18 — GPIO / LCDDAT18 |
| Chân 117 | PC19 — GPIO / LCDDAT19 |
| Chân 118 | PC20 — GPIO / LCDDAT20 |
| Chân 119 | PC21 — GPIO / LCDDAT21 |
| Chân 120 | PC22 — GPIO / LCDDAT22 |
| Chân 121 | PC23 — GPIO / LCDDAT23 |
| Chân 122 | VDDIO — I/O supply 3.3V |
| Chân 123 | VSS — Ground |
| Chân 124 | PC24 — GPIO / LCDDISP |
| Chân 125 | PC25 — GPIO / LCDVSYNC |
| Chân 126 | PC26 — GPIO / LCDHSYNC |
| Chân 127 | PC27 — GPIO / LCDPCK |
| Chân 128 | PC28 — GPIO / LCDDEN |
| Chân 129 | PC29 — GPIO / LCDCC |
| Chân 130 | PC30 — GPIO / TCK / SWCLK |
| Chân 131 | PC31 — GPIO / TMS / SWDIO |
| Chân 132 | NRST — Active-low reset input |
| Chân 133 | TDO / SWO — JTAG TDO / Serial Wire Output |
| Chân 134 | TDI — JTAG TDI |
| Chân 135 | JTAGSEL — JTAG boundary scan select |
| Chân 136 | ERASE — Flash erase input (active-low) |
| Chân 137 | WKUP0 — Wakeup input 0 |
| Chân 138 | WKUP1 — Wakeup input 1 |
| Chân 139 | WKUP2 — Wakeup input 2 |
| Chân 140 | XIN32 — 32.768 kHz crystal input |
| Chân 141 | XOUT32 — 32.768 kHz crystal output |
| Chân 142 | XIN — Main crystal input (8-12 MHz) |
| Chân 143 | XOUT — Main crystal output |
| Chân 144 | VDDIO — I/O supply 3.3V |
Ứng dụng tiêu biểu
ATSAME70Q20B-AN phù hợp cho 6 Áp dụngs: Industrial Motor Control Drives, Industrial IoT Edge Gateways, Graphical HMI Touch Panels, Automotive Telematics and Gateway ECUs, Medical Instrumentation and Patient Monitors, Building Automation Controllers.
Industrial Motor Control Drives
The ATSAME70Q20B-AN's 300 MHz Cortex-M7 with FPU and DSP extensions is ideal for field-oriented control (FOC) of PMSM and BLDC motors, executing the Park/Clarke transforms and PI loops with deterministic cycle times. The 12-bit 2 MSPS ADC samples three-phase current simultaneously via PWM-triggered sequencing, while the hardware quadrature decoder handles encoder feedback up to 32-bit position count. Compared to Cortex-M4 motor MCUs, the Cortex-M7's double-precision FPU halves torque-ripple calculation time and improves sinusoidal commutation accuracy at high RPM. The 1 MB Flash accommodates FOC firmware plus CANopen or EtherCAT slave stacks without external memory.
Được đề xuất
Industrial IoT Edge Gateways
The ATSAME70Q20B-AN integrates dual CAN-FD, 10/100 Ethernet with 1588 PTP timestamping, and HS USB with on-chip PHY - the three connectivity pillars required for industrial IoT edge gateways bridging Fieldbus to Ethernet. The Cortex-M7 runs a real-time OS (FreeRTOS or Zephyr) plus a TCP/IP stack with TLS 1.3, offloading encryption to the Cortex-M7's hardware AES accelerator. The 384 KB SRAM handles TCP/IP buffers and CAN-FD message queues without external memory. Compared to Cortex-M4 gateways, the ATSAME70Q20B-AN's higher clock and 1588 PTP hardware deliver sub-microsecond timestamping accuracy for synchronized distributed control.
Được đề xuất
Graphical HMI Touch Panels
The ATSAME70Q20B-AN's integrated LCD controller supports resolutions up to XGA (1024x768) at 24 bpp and a parallel RGB interface, enabling direct connection to mid-size TFT LCD panels used in building automation and factory HMI. The 32-bit EBI drives external SDRAM for frame buffers (e.g., 16 MB for 800x480@32 bpp), and the 300 MHz Cortex-M7 with FPU renders emWin or LVGL UIs smoothly. The hardware 2D acceleration (line draw, BLIT) accelerates graphics primitives without CPU overhead. Compared to Cortex-M4 HMI controllers, the E70's hardware 2D engine halves screen-update latency for animated gauges.
Được đề xuất
Automotive Telematics and Gateway ECUs
The ATSAME70Q20B-AN's dual CAN-FD controllers (8 Mbps), Cortex-M7 300 MHz performance, and automotive-grade temperature range make it suitable for telematics control units (TCUs) and central gateway ECUs. The Ethernet MAC with 1588 PTP timestamping bridges automotive Ethernet (100BASE-T1) to legacy CAN networks, while the Cortex-M7 runs AUTOSAR-classical applications and security stacks (HSM with hardware AES/SHA). Compared to Cortex-M4 automotive MCUs, the ATSAME70Q20B-AN's deterministic interrupt latency (12 cycles) improves AUTOSAR OS conformance for safety-critical body controllers.
Được đề xuất
Medical Instrumentation and Patient Monitors
The ATSAME70Q20B-AN's 12-bit 2 MSPS ADC with hardware oversampling and the Cortex-M7 DSP extensions enable accurate acquisition of ECG, EEG, and SpO2 signals in patient monitoring equipment. The single-precision FPU executes biquad filters and FFT-based heart-rate-variability analysis at the Cortex-M7's 300 MHz rate, well within the 1 ms sampling budget. The hardware AES accelerator secures patient data (HIPAA compliance) with minimal CPU overhead. Compared to Cortex-M4 medical devices, the E70's hardware oversampling ADC delivers 16-bit effective resolution for high-precision instrumentation.
Được đề xuất
Building Automation Controllers
The ATSAME70Q20B-AN powers BACnet, KNX, and Modbus building automation controllers with its Ethernet MAC, dual CAN-FD, and UART/SPI/TWI interfaces - covering all major building-automation Fieldbus protocols. The 300 MHz Cortex-M7 runs a real-time OS plus a BACnet/IP stack with scheduling, while the 16 KB ICache/DCache improves interrupt response for time-critical HVAC control loops. The hardware AES secures building-access credentials and TLS traffic to cloud-based management dashboards. Compared to Cortex-M4 controllers, the E70's dual CAN-FD and PTP-enabled Ethernet streamline multi-protocol gateway designs.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATSAME70Q20B-AN — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | ATSAME70Q20A-AN | ATSAME70Q21B-AN | ATSAME70Q19A-AN | ATSAME70Q20B-CN | ATSAME70N21B-CN | ATSAME70N20A-CNT |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | LQFP-144 (20x20 mm) | LQFP-144 (20x20 mm) - same | LQFP-144 (20x20 mm) - same | LQFP-144 (20x20 mm) - same | LQFP-144 (20x20 mm) - same | LQFP-144 (20x20 mm) - same | LQFP-144 (20x20 mm) - same |
| Core / Max Clock | Cortex-M7 / 300 MHz | Cortex-M7 / 300 MHz | Cortex-M7 / 300 MHz | Cortex-M7 / 300 MHz | Cortex-M7 / 300 MHz | Cortex-M7 / 300 MHz | Cortex-M7 / 300 MHz |
| Flash | 1 MB | 1 MB | 2 MB | 1 MB | 1 MB | 2 MB | 1 MB |
| SRAM | 384 KB | 384 KB | 384 KB | 256 KB | 384 KB | 384 KB | 384 KB |
| Ethernet MAC | Yes (10/100, 1588 PTP) | Yes (10/100, 1588 PTP) | Yes (10/100, 1588 PTP) | Yes (10/100, 1588 PTP) | Yes (10/100, 1588 PTP) | Yes (10/100, 1588 PTP) | No Ethernet |
| HS USB PHY | Yes (Device/Host) | Yes (Device/Host) | Yes (Device/Host) | Yes (Device/Host) | Yes (Device/Host) | No | Yes (Device/Host) |
| CAN-FD | 2x CAN-FD | 2x CAN-FD | 2x CAN-FD | 2x CAN-FD | 2x CAN-FD | 2x CAN-FD | 2x CAN-FD |
| Operating Temperature | -40C to +105C (industrial) | -40C to +85C | -40C to +105C | -40C to +85C | 0C to +70C (commercial) | -40C to +85C | -40C to +85C |
Bảo phân biệt quan trọng
- Cortex-M7 with double-precision FPU at 300 MHz (vsATSAME70Q19A-AN)
- Drop-in 1 MB Flash family member (vsATSAME70Q21B-AN)
- Industrial temperature -40C to +105C (vsATSAME70Q20B-CN)
Ghi chú thiết kế
The ATSAME70Q20B-AN requires four distinct supply domains: VDDIO (3.3 V for I/O ring), VDDANA (3.3 V for analog blocks, must be low-noise with separate ferrite from VDDIO), VDDPLL (1.2 V derived from internal regulator or external), and VDDOUT (1.2 V core LDO output). Place a 100 nF + 10 uF ceramic + 4.7 uF bulk capacitor directly at VDDOUT pin 19, plus 100 nF at every VDDIO/VSS pin pair. A common design pitfall is sharing VDDIO and VDDANA - this couples switching noise into the 12-bit ADC reference, increasing ENOB by 1-2 bits of degradation.
The 144-LQFP package has thermal resistance theta_JA of approximately 35 C/W (with 4-layer JEDEC test board). At 300 MHz with all peripherals active, the device dissipates up to 1.5 W; in industrial environments with ambient up to 85 C, the junction temperature can approach 137 C, exceeding the 125 C limit. Recommended: ensure 2 oz copper on top and bottom layers with a copper area of at least 1.5 square inches directly under the exposed pad of LQFP-176 variants; for LQFP-144 use thermal vias array (0.3 mm pitch, 9 vias minimum) under the package center.
The high-speed 50 MHz EBI bus to external SDRAM requires careful impedance control - trace impedance 50 ohm single-ended, 100 ohm differential for clock pairs, trace length matching within +/- 250 mils. Place the SDRAM within 50 mm of the EBI pins and use series 33 ohm damping resistors on EBI_D[15:0] and address lines. Common pitfall: routing EBI_DQ across the same layer as switching power supply traces - keep at least 5 mm separation or use a ground guard trace to prevent crosstalk into the SDRAM controller.
Three common pitfalls when bringing up ATSAME70Q20B-AN designs: (1) Forgetting to configure the supply monitor (SUPC) before enabling the main voltage regulator - this can cause brown-out resets on cold start. (2) Not enabling the 16 KB ICache before jumping to external QSPI flash - this halves code execution performance. (3) Leaving the ERASE pin floating - it must be tied high through a 10 kohm pull-up, otherwise an ESD event can trigger a full Flash erase in the field.
Place the 32.768 kHz crystal XIN32/XOUT32 within 5 mm of pins 140/141 with grounded guard ring to prevent coupling of switching noise from the main oscillator. The 8-12 MHz main crystal on pins 142/143 should be similarly guarded, and both crystal traces must maintain symmetric length (delta < 1 mm). For USB applications, the 90 ohm differential D+/D- pair from the on-chip PHY must be routed as a length-matched pair with 90 ohm differential impedance, and the USB shield ground should connect to PCB ground at a single point near the connector.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page. AEC-Q100 not qualified for standard -AN grade; contact Microchip for automotive AEC-Q100 qualified SAME70 variants. Lead-free and halogen-free per Microchip environmental compliance data.
