ATSAME70Q21B-CFNT
ATSAME70Q21B-CFNT - ARM Cortex-M7 MCU, 300MHz, 2MB Flash, 144-UFBGA
The Microchip Technology ATSAME70Q21B-CFNT is a high-performance 32-bit ARM Cortex-M7 microcontroller with Floating Point Unit (FPU), operating at up to 300 MHz, and featuring 2 MB of Flash plus 384 KB of multi-port SRAM in a 144-pin UFBGA (6x6 mm) industrial-grade package.
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.
견적 요청
문의하기