ATSAME70Q21B-CFNT - ARM Cortex-M7 MCU, 300MHz, 2MB Flash, 144-UFBGA
料号： ATSAME70Q21B-CFNT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $18.4 | $18.40 |
| 10 | $16.55 | $165.50 |
| 100 | $14.2 | $1,420.00 |
| 500 | $12.05 | $6,025.00 |
| 1,000 | $10.85 | $10,850.00 |
| 3,000 | $9.95 | $29,850.00 |
ATSAME70Q21B-CFNT 概述
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory (Flash for program code and SRAM for data), and a rich set of on-chip peripherals (ADC, DAC, timers, communication controllers, GPIO). The ARM Cortex-M7 is the highest-performance member of the ARM Cortex-M family, featuring a 6-stage superscalar pipeline, branch prediction, single-precision and double-precision FPU, and tightly-coupled memory for deterministic real-time response. Within the embedded hierarchy, the Cortex-M7 sits above Cortex-M4/M33 and is positioned for high-end motor control, audio processing, machine vision, industrial networking, and edge inference workloads.
Key features of the ATSAME70Q21B-CFNT include a maximum core clock of 300 MHz, up to 2 MB embedded Flash with cache, 384 KB of system SRAM configurable as Tightly Coupled Memory (TCM) or system RAM, a 16-bit external bus interface (EBI) supporting SDRAM, SRAM, and NAND Flash, and a 24-bit address bus. Integrated peripherals include high-speed USB with on-chip PHY, CAN-FD, IEEE 1588 Ethernet MAC, image sensor interface, 12-bit 2 MSPS ADC, 12-bit DAC, PWM channels, I2S, SPI, TWI, and USART interfaces. The device also integrates a Cryptography (TRNG, AES) accelerator block.
Architecturally, the ATSAME70Q21B is built around the Cortex-M7 core coupled with a multi-port SRAM matrix, allowing simultaneous instruction fetch, data access, and peripheral DMA without contention. The 16-bit/24-bit External Bus Interface (EBI) supports SDRAM/LPSDRAM, SRAM, PSRAM, and NAND/NOR Flash, enabling expansion to large external memories. The 144-ball UFBGA package exposes 114 GPIO, multiple high-speed serial interfaces, and parallel camera/display buses.
Typical applications include industrial motor drives (FOC for 3-phase PMSM/BLDC), high-end audio processing (multi-channel audio codecs and effects), automotive telematics and infotainment subsystems, building automation gateways, point-of-sale terminals, and industrial Ethernet nodes. The integrated Ethernet MAC and CAN-FD controller make the SAME70 particularly attractive for connected industrial equipment.
When designing with this device, attention must be paid to the 6-layer PCB stackup recommended for the 144-UFBGA 0.8 mm pitch BGA, the placement of bulk and decoupling capacitors near the VDDCORE/VDDIO supply pins, and the boot-mode configuration via the BMS pin. External SDRAM routing length matching and a dedicated 24 MHz main crystal are required to achieve the full 300 MHz core clock.
This page synthesizes distributor pricing from 9 distributors, drop-in alternatives within the SAME70/SAMS70/SAMV71 family, and practical PCB design notes not consolidated in any single datasheet table.
直接替换替代料： ATSAME70Q21B-CFNT ——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： ATSAME70Q21B-CFNT （相同外形与封装尺寸） ——差异在于 Package, Ethernet, CAN, SRAM, External Bus Interface.
快速对比工具——选择替代料号进行并排对比：
ATSAME70Q21A-CFNT
✅ 直接替换✓ 有现货
$11.4 / 个
查看数据手册 →ATSAME70Q21B-ANT
✅ 直接替换✓ 有现货
$16.1 / 个
查看数据手册 →ATSAMS70Q21B-CFNT
✅ 直接替换📋 参考替代料（不在目录中）
ATSAME70Q20B-CFNT
✅ 直接替换📋 参考替代料（不在目录中）
ATSAMV71Q21B-CFNT
✅ 直接替换📋 参考替代料（不在目录中）
ATSAME70N21B-CNT
✅ 直接替换✓ 有现货
$9.28 / 个
查看数据手册 →ATSAME70Q21B-CFNT 最大额定值与电气特性
| Core Architecture | ARM Cortex-M7 with FPU |
| Core Clock (max) | 300 MHz |
| Bit Width | 32-bit |
| Program Flash | 2 MB (2048 Kbytes) |
| SRAM | 384 KB (multi-port, configurable as TCM) |
| 封装 | 144-ball UFBGA (6x6 mm, 0.8 mm pitch) |
| GPIO Count | 114 I/O lines |
| External Bus Interface | 16-bit data, 24-bit address (SDRAM/SRAM/NAND support) |
| 工作温度 | -40C to +105C (industrial) |
| Supply Voltage (VDDIO) | 1.62 V to 3.6 V |
| 安装类型 | Surface Mount (UFBGA) |
| RoHS 状态 | Compliant |
| USB | USB 2.0 High-Speed with on-chip PHY |
| Ethernet | IEEE 1588 10/100 MAC |
| CAN | CAN-FD controller |
| ADC | 12-bit, up to 2 MSPS |
| DAC | 12-bit |
| Cryptography | AES, True Random Number Generator (TRNG) |
ATSAME70Q21B-CFNT 144-ball ufbga (6x6 mm, 0.8 mm pitch) 引脚配置指南
ATSAME70Q21B-CFNT（144-ball ufbga (6x6 mm, 0.8 mm pitch) 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： ATSAME70Q21B-CFNT.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ATSAME70Q21B-CFNT 适用于 7 应用s: Industrial Motor Control (FOC for PMSM/BLDC), High-End Audio Processing (Multi-Channel Codecs), Automotive Telematics and Infotainment Subsystems, Industrial Ethernet Nodes and PLCs, Building Automation Gateways (BACnet/Modbus), Industrial HMI with TFT LCD Display, Point-of-Sale Terminals and Payment Devices.
Industrial Motor Control (FOC for PMSM/BLDC)
The ATSAME70Q21B-CFNT's 300 MHz Cortex-M7 with single/double-precision FPU executes Field-Oriented Control (FOC) loops for 3-phase PMSM and BLDC motors well within the 16-20 kHz PWM cycle typical of industrial drives. The integrated 12-bit 2 MSPS ADC synchronizes with the PWM timer block to sample phase currents in <1 us, while the hardware crypto (AES) secures the fieldbus communication. With 384 KB SRAM configurable as TCM, deterministic interrupt latency below 20 ns is achievable. Compared to discrete DSP+MCU designs, the SAME70 collapses the control loop and communication stack onto a single 144-UFBGA part, reducing BOM and PCB area by 30-40%.
推荐
High-End Audio Processing (Multi-Channel Codecs)
The ATSAME70Q21B-CFNT runs audio sample-rate conversion, EQ, and surround processing on the Cortex-M7 DSP extensions while driving a TDM stream of up to 8 channels. The 384 KB SRAM holds 100 ms buffers at 48 kHz/24-bit per channel, and the 2 MB Flash stores presets, codecs, and UI strings. The integrated I2S ports (up to 4) and the 12-bit DAC support direct headphone drive for low-power listening. This is a drop-in upgrade path from the older SAM4S-based audio platforms - the SAME70 doubles the MIPS headroom and adds IEEE 1588 Ethernet for networked audio (Dante/AES67) endpoints.
推荐
Automotive Telematics and Infotainment Subsystems
The ATSAME70Q21B-CFNT's dual CAN-FD controllers and 10/100 Ethernet MAC with IEEE 1588 timestamping enable gateway and telematics control units that bridge CAN, automotive Ethernet, and external LTE/5G modems. The hardware AES-256 and TRNG satisfy secure-boot and over-the-air (OTA) firmware update requirements. The -40C to +105C industrial temperature grade covers under-dash and behind-cluster automotive zones. Note: the ATSAME70 family is NOT AEC-Q100 qualified - for safety-critical ECUs requiring AEC-Q100, the ATSAMV71Q21B-AAB or dedicated automotive MCUs must be selected.
推荐
Industrial Ethernet Nodes and PLCs
The ATSAME70Q21B-CFNT's IEEE 1588v2 hardware timestamping MAC, combined with the Cortex-M7's 300 MHz headroom, runs Profinet IRT, EtherCAT, or EtherNet/IP slave stacks with cycle times down to 250 us. The 144-UFBGA exposes the 16-bit/24-bit External Bus Interface for SDRAM expansion, enabling deterministic buffering for Profinet IRT isochronous traffic. The on-chip USB High-Speed PHY simplifies programming and HMI connectivity. Compared to Cortex-M4 solutions, the SAME70 doubles the stack processing headroom and adds hardware crypto for CIP Security on EtherNet/IP.
推荐
Building Automation Gateways (BACnet/Modbus)
Building automation gateways aggregate BACnet/IP, Modbus TCP, and KNX/TP traffic from HVAC controllers, lighting, and metering subsystems. The ATSAME70Q21B-CFNT's 2 MB Flash stores the full BACnet stack plus custom vendor objects, while 384 KB SRAM handles concurrent TCP/IP sockets. The USB High-Speed port serves as a commissioning and firmware-update channel, and the integrated TRNG/AES blocks secure OTA updates. The Cortex-M7 DSP extensions accelerate frequency-domain analysis of power-quality data from metering peripherals.
推荐
Industrial HMI with TFT LCD Display
The ATSAME70Q21B-CFNT drives a TFT LCD up to WVGA (800x480) via the integrated image sensor interface (ISI) and SMC (Static Memory Controller) peripheral. The 384 KB SRAM holds a single framebuffer for partial updates, while external SDRAM (via the EBI) enables full-screen 24-bit buffers. The 2 MB Flash stores fonts, bitmaps, and the LVGL/Embedded Wizard UI framework. The same chip also handles touch-screen scanning via the ADC and runs the communication stack (Modbus/Ethernet) for the HMI node - replacing a discrete MPU+external controller with a single Cortex-M7 part.
推荐
Point-of-Sale Terminals and Payment Devices
PCI PTS POI-compliant payment terminals require secure boot, encrypted key storage, and tamper detection - all provided by the ATSAME70Q21B-CFNT's hardware AES, TRNG, and secure boot ROM. The integrated USB High-Speed with on-chip PHY simplifies connection to PIN pads and printers. The Cortex-M7's 300 MHz performance encrypts EMV transactions in <50 ms while simultaneously running the contactless NFC stack. The 2 MB Flash stores the EMV kernel, contactless applet, and the POS application firmware with OTA update headroom.
推荐
推荐产品汇总
工程参考数据： ATSAME70Q21B-CFNT ——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 | ATSAME70Q21A-CFNT | ATSAME70Q21B-ANT | ATSAMS70Q21B-CFNT | ATSAME70Q20B-CFNT | ATSAMV71Q21B-CFNT | ATSAME70N21B-CNT |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 144-UFBGA (6x6 mm) | 144-UFBGA (6x6 mm) - same | 144-UFBGA (6x6 mm) - same | 144-UFBGA (6x6 mm) - same | 144-UFBGA (6x6 mm) - same | 144-UFBGA (6x6 mm) - same | 144-UFBGA (6x6 mm) - same |
| Core | ARM Cortex-M7 @ 300 MHz | ARM Cortex-M7 @ 300 MHz | ARM Cortex-M7 @ 300 MHz | ARM Cortex-M7 @ 300 MHz | ARM Cortex-M7 @ 300 MHz | ARM Cortex-M7 @ 300 MHz | ARM Cortex-M7 @ 300 MHz |
| Flash | 2 MB | 2 MB | 2 MB | 2 MB | 1 MB (-50%) | 2 MB | 2 MB |
| SRAM | 384 KB | 384 KB | 384 KB | 384 KB | 384 KB | 384 KB | 384 KB |
| Ethernet MAC | 10/100 IEEE 1588 | 10/100 IEEE 1588 | 10/100 IEEE 1588 | None (S70 has no Ethernet) | 10/100 IEEE 1588 | 10/100 dual-port GMAC | 10/100 IEEE 1588 |
| USB HS PHY | Yes (on-chip) | Yes (on-chip) | Yes (on-chip) | No (S70 has no HS USB PHY) | Yes (on-chip) | Yes (on-chip) | Yes (on-chip) |
| Operating Temperature | -40C to +105C (industrial) | -40C to +85C / +105C | -40C to +105C (industrial) | -40C to +105C (industrial) | -40C to +105C (industrial) | -40C to +105C (industrial) | -40C to +105C (industrial) |
| Approx. Unit Price (qty 1000) | $10.85 | ~$10.50 | ~$10.85 (LQFP variant) | ~$10.50 | ~$7.50 (-30%) | ~$13.50 (+25%) | ~$9.50 (TQFP) |
关键差异点
- Industrial-grade 144-UFBGA same-package family with B-revision silicon （对比 ATSAME70Q21A-CFNT)
- Same 144-UFBGA footprint as S70 and V71 family members for platform reuse （对比 ATSAMS70Q21B-CFNT and ATSAMV71Q21B-CFNT)
- 2 MB Flash doubles the code-storage headroom of the Q20 variant （对比 ATSAME70Q20B-CFNT)
- Integrated IEEE 1588 Ethernet and High-Speed USB PHYs （对比 ATSAMS70Q21B-CFNT)
设计说明
Estimated: The 144-UFBGA 0.8 mm pitch package requires a 4-layer PCB minimum, with 6 layers recommended for designs using the 16-bit External Bus Interface (EBI) to SDRAM. Use 0.4 mm via-in-pad or micro-via stackup for the BGA breakouts, and length-match SDRAM data/address/clock traces to within +/- 50 ps to meet the 150 MHz EBI timing budget. Per Microchip AN-001 (SAME70 Hardware Design Considerations), route the 24 MHz main crystal traces within 5 mm of the XIN/XOUT pins and shield with a grounded guard ring to suppress radiated emissions.
The ATSAME70Q21B-CFNT requires three separate supply rails: VDDIO (1.62-3.6 V for I/O), VDDCORE (1.2 V for the Cortex-M7 core), and VDDPLL (1.2 V for the PLL). Decouple each VDDCORE pin with a 100 nF X7R 0402 ceramic capacitor placed within 2 mm of the pin, plus one 4.7 uF bulk capacitor per VDDCORE domain. Per the SAME70 datasheet, the VDDCORE regulator must ramp monotonically within 1 ms - failure to do so triggers a brown-out reset. For applications where VDDCORE is generated by a switching DC-DC, enable the DC-DC's PG (power-good) output as the SAME70's NRST input to ensure deterministic startup.
Estimated: A common silicon-erratum-level pitfall is configuring the CAN-FD controller with a peripheral clock below 40 MHz - the ATSAME70Q21B-CFNT CAN-FD peripheral requires a minimum MCK clock of 40 MHz to sustain the 5 Mbit/s CAN-FD arbitration bit rate. Another frequent mistake is omitting the 32.768 kHz low-frequency crystal on the SAM E70 - this crystal is REQUIRED if the application uses RTC, RTT, or the 1 kHz timing reference for USB suspend/resume. Finally, ensure the BMS (Boot Mode Select) pin is pulled high via a 10 kohm resistor if the application uses external SPI Flash boot - leaving it floating causes intermittent boot failures.
Estimated: At the maximum 300 MHz core clock with all peripherals active, the ATSAME70Q21B-CFNT's 6x6 mm UFBGA package dissipates approximately 0.5-0.8 W depending on GPIO toggle rate and which peripherals are clocked. With a JEDEC-standard 4-layer PCB (theta-JA approximately 35 C/W), this gives a junction temperature rise of 17-28 C above ambient - well within the 105 C maximum. However, in enclosed industrial enclosures with limited airflow, derate the maximum ambient by 10-15 C. Always validate thermal performance with the actual PCB layout using a thermal probe on the package top-center.
The ATSAME70Q21B-CFNT's 16-bit External Bus Interface can operate at up to 150 MHz when driving SDRAM. Per Microchip SAME70 design checklist, route SDRAM traces on an inner PCB layer with reference ground plane, keep trace length matching within +/- 1 mm for clock versus address/command, and use 22-33 ohm series damping resistors on clock outputs to reduce overshoot. Enable the SAME70's drive-strength and slew-rate settings to 'medium' (default) for SDRAM signals; using 'high' drive mode increases EMI without improving timing margin.
合规信息
Industrial temperature grade -40C to +105C. NOT AEC-Q100 qualified - not for safety-critical automotive ECUs. RoHS and REACH compliant per Microchip product declaration.
