方案概述

基于STM32F407的微型视频探测器，特色如下：

1）用于各种自动感应门、自动旋转门等场合，用于检测人体或物体的闯入或存在的信号发出；

2）以STM32F407为控制核心；

3）采用OV2640的摄像头；

4）硬件原理图、PCB（可根据需求定制）；

5）高效的处理程序和图像处理算法。

STM32F407参数

Features

■Core: ARM 32-bit Cortex™-M4 CPU with FPU, Adaptive real-time accelerator (ART Accelerator™) allowing 0-wait state execution from Flash memory, frequency up to 168MHz, memory protection unit, 210DMIPS/1.25DMIPS/MHz(Dhrystone 2.1), and DSP instructions

■Memories–Up to 1 Mbyte of Flash memory–Up to 192+4Kbytes of SRAM including 64-Kbyte of CCM (core coupled memory) data RAM–Flexible static memory controller supporting 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-26MHz crystal oscillator–Internal 16 MHz factory-trimmed RC (1% accuracy)–32 kHz oscillator for RTC with calibration–Internal 32 kHz RC with calibration

●Low power–Sleep, Stop and Standby modes–VBATsupply for RTC, 20×32 bit backup registers + optional 4 KB backup SRAM

■3×12-bit, 2.4MSPS A/D converters: up to 24 channels and 7.2MSPS 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 168MHz, each with up to 4 IC/OC/PWM or pulse counter and quadrature (incremental) encoder input

■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 84MHz–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 (10.5Mbit/s, ISO 7816 interface, LIN, IrDA, modem control)–Up to 3 SPIs (37.5Mbits/s), 2 with muxed full-duplex I2S to achieveaudio class accuracy via internal audio PLL or external clock–2 × CAN interfaces (2.0B Active)–SDIO interface

■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 54Mbytes/s

■True random number generator

■CRC calculation unit

■96-bit unique ID

■RTC: subsecond accuracy, hardware calendarTable 1.Device summaryReferencePart number

STM32F405xx

STM32F405RG, STM32F405VG, STM32F405ZG

STM32F407xx

STM32F407VG, STM32F407IG, STM32F407ZG,

STM32F407VE, STM32F407ZE, STM32F407IE

LQFP64 (10 × 10 mm)

LQFP100 (14 × 14 mm)

LQFP144 (20 × 20 mm)

FBGA

UFBGA176 

(10 × 10 mm)

LQFP176 (24 × 24 mm)

WLCSP90