[GD] Cortex-M7 STM32F7

오랜만에 신제품입니다.

Cortex-M7 입니다.

ARM에서 이미 발표를 하고, ST에서 선빵을 날리는 형국이네요. 

아직 Preview상태이며 Discovery Board 도 멋있게 나와주리라 생각 됩니다.

기본 특징은 기존 MCU들이 잘 가지고 있지 않는 내부 cache가 AP급으로 노골적으로 들어난 형국입니다.

외부 메모리 활용을 높이려면 어쩔 수 없을 것 같고요.

기존 M4 계열이 1.25DMIPS/Mhz 인데, M7계열은 2.14DMIPS/Mhz 로 성능이 확 올라 갑니다.

따라서 기존 M4 계열과 최대 동작 Clock이 같다고 쳐도 DMIPS기준으로는 성능이 2배 조금 못 미치게 됩니다.

조금 기다리면 실체를 볼 수 있겠네요.

컴파일러는 어떻게 되려나......

STM32F756NG

High-performance and DSP with FPU, ARM Cortex-M7 MCU with 1 Mbytes Flash, 200 MHz CPU, Art Accelerator, L1 cache, HW crypto, SDRAM, TFT

• Preview

The STM32F756xx devices are based on the high-performance ARM^®Cortex®-M7 32-bit RISC core operating at up to 200 MHz frequency. The Cortex®-M7 core features a single floating point unit (SFPU) precision which supports all ARM® single-precision data-processing instructions and data types. It also implements a full set of DSP instructions and a memory protection unit (MPU) which enhances application security.

The STM32F756xx devices incorporate high-speed embedded memories with Flash memory up to 1 Mbyte, 320 KB of SRAM (including 64 KB of Data TCM RAM for critical real time data), 16 KB of instruction TCM RAM (for critical real time routines), 4 KB of backup SRAM available in the lowest power modes, and an extensive range of enhanced I/Os and peripherals connected to two APB buses, two AHB buses, a 32-bit multi-AHB bus matrix and a multi layer AXI interconnect supporting internal and external memories access.

All devices offer three 12-bit ADCs, two DACs, a low-power RTC, twelve general-purpose 16-bit timers including two PWM timers for motor control, two general-purpose 32-bit timers, a true random number generator (RNG), and a cryptographic acceleration cell. They also feature standard and advanced communication interfaces.

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Errata Sheet

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Data Brief

Key Features

• Core: ARM® 32-bit Cortex®-M7 CPU with FPU, adaptive real-time accelerator (ART Accelerator™) and L1 cache: 4KB data cache and 4KB instruction cache, allowing 0-wait state execution from embedded Flash memory and external memories, frequency up to 200 MHz, MPU, 428 DMIPS/2.14 DMIPS/MHz (Dhrystone 2.1), and DSP instructions.
• Memories
• Up to 1MB of Flash memory
• SRAM: 320KB (including 64KB of data TCM RAM for critical real time data) + 16KB of instruction TCM RAM (for critical real time routines) + 4KB of backup SRAM (available in the lowest power modes)
• Flexible external memory controller with up to 32-bit data bus: SRAM, PSRAM, SDRAM/LPSDR SDRAM, NOR/NAND memories
• Dual mode Quad SPI
• LCD parallel interface, 8080/6800 modes
• LCD-TFT controller up to XGA resolution with dedicated Chrom-ART Accelerator™ for enhanced graphic content creation (DMA2D)
• Clock, reset and supply management
• 1.7 V to 3.6 V application supply and I/Os
• POR, PDR, PVD and BOR
• Dedicated USB power
• 4-to-26 MHz crystal oscillator
• Internal 16 MHz factory-trimmed RC (1% accuracy)
• 32 kHz oscillator for RTC with calibration
• Internal 32 kHz RC with calibration
• Sleep, Stop and Standby modes
• V_BATsupply for RTC, 32×32 bit backup registers + 4KB backup SRAM
• 3×12-bit, 2.4 MSPS ADC: up to 24 channels and 7.2 MSPS in triple interleaved mode
• 2×12-bit D/A converters
• General-purpose DMA: 16-stream DMA controller with FIFOs and burst support
• Up to 18 timers: up to thirteen 16-bit (1x low power 16-bit timer available in stop mode) and two 32-bit timers, each with up to 4 IC/OC/PWM or pulse counter and quadrature (incremental) encoder input. All 15 timers running up to 200 MHz. 2x watchdogs, SysTick timer
• Debug mode
• SWD & JTAG interfaces
• Cortex®-M7 Trace Macrocell™
• Up to 168 I/O ports with interrupt capability
• Up to 164 fast I/Os up to 100 MHz
• Up to 166 5 V-tolerant I/Os
• Up to 25 communication interfaces
• Up to 4× I²C interfaces (SMBus/PMBus)
• Up to 4 USARTs/4 UARTs (12.5 Mbit/s, ISO7816 interface, LIN, IrDA, modem control)
• Up to 6 SPIs (up to 50 Mbits/s), 3 with muxed simplex I²S for audio class accuracy via internal audio PLL or external clock
• 2 x SAI (serial audio interface)
• 2 × CAN (2.0B Active) and SDMMC interface
• SPDIF-IN interface
• HDMI-CEC
• Advanced connectivity
• USB 2.0 full-speed device/host/OTG controller with on-chip PHY
• USB 2.0 high-speed/full-speed device/host/OTG controller with dedicated DMA, on-chip full-speed PHY and ULPI
• 10/100 Ethernet MAC with dedicated DMA: supports IEEE 1588v2 hardware, MII/RMII
• 8- to 14-bit parallel camera interface up to 54 Mbytes/s
• Cryptographic acceleration: hardware acceleration for AES 128, 192, 256, Triple DES, HASH (MD5, SHA-1, SHA-2), and HMAC
• True random number generator
• CRC calculation unit
• RTC: subsecond accuracy, hardware calendar
• 96-bit unique ID

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