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1、Keil STM32F407评估开发方案Keil公司的MCBSTM32F400评估板采用ST公司的STM32F407IG器件,它是基于168MHz ARM Cortex™-M4的MCU,176引脚BGA封装,具有1MB Flash & 192KB RAM,外接存储器8MB NOR Flash, 512MB NAND Flash, 2MB SRAM, 8KB I2C EEPROM,采用电阻触摸屏的2.4吋彩色QVGA TFT LCD,10/100以太网端口,主要用在马达驱动和应用控制,医疗设备,工业应用如PLC,逆变器,电路中断器,打印机和扫描仪,告警系统,视频互连,HVAC
2、以及家庭音响设备.本文介绍了STM32F405xx和STM32F407xx 主要特性,方框图,MCBSTM32F400评估板主要特性,技术指标,方框图以及电路图和PCB元件布局图.STM32F405xx/STM32F407xx:ARM Cortex-M4 32b MCU+FPU, 210DMIPS, up to 1MB Flash/192+4KB RAM, USB OTG HS/FS, Ethernet, 17 TIMs, 3 ADCs, 15 comm. interfaces & cameraThe STM32F405xx and STM32F407xx family is base
3、d on the high-performance ARM®Cortex™-M4 32-bit RISC core operating at a frequency of up to 168 MHz. The Cortex-M4core features a Floating point unit (FPU) single precision which supports all ARM singleprecision data-processing instructions and data types. It also implements a full set of
4、DSP instructions and a memory protection unit (MPU) which enhances application security. The Cortex-M4 core with FPU will be referred to as Cortex-M4F throughout this document.The STM32F405xx and STM32F407xx family incorporates high-speed embedded memories (Flash memory up to 1 Mbyte, up to 192 Kbyt
5、es of SRAM), up to 4 Kbytes of backup SRAM, and an extensive range of enhanced I/Os and peripherals connected to two APB buses, two AHB buses and a 32-bit multi-AHB bus matrix.All devices offer three 12-bit ADCs, two DACs, a low-power RTC, twelve general-purpose 16-bit timers including two PWM timer
6、s for motor control, two general-purpose 32-bit timers. a true random number generator (RNG). They also feature standard and advanced communication interfaces. Up to three I2Cs Three SPIs, two I2Ss full duplex. To achieve audio class accuracy, the I2S peripherals can be clocked via a dedicated inter
7、nal audio PLL or via an external clock to allow synchronization. Four USARTs plus two UARTs An USB OTG full-speed and a USB OTG high-speed with full-speed capability (with the ULPI), Two CANs An SDIO/MMC interface Ethernet and the camera interface available on STM32F407xx devices only. New advanced
8、peripherals include an SDIO, an enhanced flexible static memory control (FSMC) interface (for devices offered in packages of 100 pins and more), a camera interface for CMOS sensors.The STM32F405xx and STM32F407xx family operates in the –40 to +105 °C temperature range from a 1.8 to 3.6 V p
9、ower supply. The supply voltage can drop to 1.7 V when the device operates in the 0 to 70 °C temperature range and PDR is disabled. A comprehensive set of power-saving mode allows the design of low-power applications.The STM32F405xx and STM32F407xx family offers devices in four packages ranging
10、from 64 pins to 176 pins. The set of included peripherals changes with the device chosen.These features make the STM32F405xx and STM32F407xx microcontroller family suitable for a wide range of applications:STM32F405xx和STM32F407xx 主要应用: Motor drive and application control Medical equipment Industrial
11、 applications: PLC, inverters, circuit breakers Printers, and scanners Alarm systems, video intercom, and HVAC Home audio appliancesSTM32F405xx和STM32F407xx 主要特性: Core: ARM 32-bit Cortex™-M4 CPU with FPU,Adaptive real-time accelerator (ART Accelerator™) allowing 0-wait state execution fro
12、m Flash memory, frequency up to 168 MHz, memory protection unit, 210 DMIPS/ 1.25 DMIPS/MHz (Dhrystone 2.1), and DSP Instructions MemoriesUp to 1 Mbyte of Flash memory– Up to 192+4 Kbytes of SRAM including 64-Kbyte of CCM (core coupled memory) data RAM– Flexible static memory controller s
13、upporting Compact Flash, SRAM, PSRAM, NOR and NAND memories LCD parallel interface, 8080/6800 modes Clock, reset and supply management– 1.8 V to 3.6 V application supply and I/Os– POR, PDR, PVD and BOR– 4-to-26 MHz crystal oscillator– Internal 16 MHz factory-trimmed RC (1% ac
14、curacy)– 32 kHz oscillator for RTC with calibration– Internal 32 kHz RC with calibration Low power– Sleep, Stop and Standby modes– VBAT supply for RTC, 20×32 bit backup registers + optional 4 KB backup SRAM 3×12-bit, 2.4 MSPS A/D converters: up to 24 channels and
15、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 17 timers: up to twelve 16-bit and two 32- bit timers up to 168 MHz, each with up to 4 IC/OC/PWM or pulse counter and quadrature (incremental) encoder in
16、put Debug mode– Serial wire debug (SWD) & JTAG interfaces– Cortex-M4 Embedded Trace Macrocell™1. The WLCSP90 package will soon be available. Up to 140 I/O ports with interrupt capability– Up to 136 fast I/Os up to 84 MHz– Up to 138 5 V-tolerant I/Os Up to 15 communication interfaces– Up to 3 × I2C interfaces (SMBus/PMBus)– Up to 4 USARTs/2 UARTs (10.5 Mbit/s, ISO 7816 interface, LIN, IrDA, modem control)– Up t
