Atmel | SMART SAM S70 and E70 ARM Cortex-M7 (World’s fastest ARM Cortex-M)

Posted by Charbax – March 17, 2015

The Atmel | SMART SAM S70 and E70 microcontrollers are based on the high-performance 32-bit ARM Cortex-M7 RISC processors with double precision floating point unit. They operate at a maximum speed of 300MHz and feature up to 2048KB of Flash, dual 16KB of cache memory and up to 384KB of SRAM. They can achieve 1500 CoreMarks or up to 645 DMIPS. On the memory side, they have a flexible SRAM which can be configured as Tightly Coupled Memory (TCM) up to 256KB. Allowing execution of deterministic code or fast processing data. Code executed from TCM is executed at full speed so at 300MHz. The SRAM is multi-port which is reducing the latency over the bus matrix. When they have a lot of burst the latency can be reduced by 16 thanks to the 4 ports. To accelerate the execution of the code from on-chip Flash or nonvolatile memory connected to QuadSPI or over the External Bus Interface, they have integrated a huge L1 cache of 16kByte for the instruction and 16kByte for the data. Both with ECC. The 384KByte of SRAM can be extended through the SDRAM interface. Looking at the features now, they have plenty of serial communications such as SPI, SDIO or USART. Atmel has one High-speed USB Host and Device, with integrated PHY which obviously save some cost and PCB space. There is one CMOS Camera interface for image acquisition. All the series offer two Advanced Analog Frontend (AFE) with Dual Sample and hold capability and Up to 16-bit resolution with hardware oversampling. They also have programmable Gain for small signal input. All series offer real-time event management through direct connection between PWM, Timer and ADC for motor control application. Both series are based on the same feature set, the only difference is coming from the Ethernet, CAN support (SAME70 integrates Ethernet and CAN). Atmel offers all series in BGA and QFP from 64 to 144 pins. Small 64-pin pincount option offers an entry level form factor high performance MCU. All series support the extended Industrial temperature range from -40 to 105°C.