USB Interface ............................................................................................................................................. 28
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
USB Data Connections ....................................................................................................................... 28
USB Pull-Up resistor ........................................................................................................................... 28
USB Power Supply .............................................................................................................................. 28
USB Suspend Current ......................................................................................................................... 30
USB Detach and Wake-Up Signaling.................................................................................................. 30
USB Driver .......................................................................................................................................... 31
USB v2.0 Compliance and Compatibility ............................................................................................ 31
8
9
Serial Peripheral Interface (SPI) ................................................................................................................. 32
Bluetooth module (802.15.1) AI56 : iWRAP5.6 with IAP for Apple. Bluetooth 2.1+EDR module with antenna connector. Class 1, iWRAP 5.0, 17 dBm TX power. FP Q4/16. IP Q3/16
I received the smart development kit today and I am very happy. Although Shenzhen will continue to have cold weather for a week, with this development kit, I don't feel that cold anymore and I am exci...
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317 power module, using potentiometer to manually adjust the output voltage, how to use single chip microcomputer to realize digital control? Design plan?...
The source code can be downloaded in the previous section. [Take some time to learn ufun_8]uarst1 serial port - debugging tips[/size] [font=Microsoft Yahei, Hei, Tahoma, SimHei, sans-serif][size=16px]...
8 hours of work, 2 hours of bus or subway, 7 hours of sleep every day; eating third-rate food, breathing second-rate air, but bearing all kinds of first-rate prices. No time and energy for each other,...
[size=5]Currently many [color=#4298ba][url=http://bbs.elecfans.com/try.html]development boards[/url][/color] use CH340 as the USB to serial port solution. The Core Route [color=#4298ba][url=http://bbs...
Assume that data is read from 8-bit AD (if it is a higher-bit AD, the data type can be defined as int), the subroutine is get_ad();
1. Limited secondary filtering
/* A value can be adjust...[Details]
With the rapid development of science and technology, especially the widespread application of digital technology and various ultra-large-scale integrated circuits, electronic equipment, especially...[Details]
Floating-point digital signal processing has become a constant requirement for precision technology, often in applications requiring high accuracy in areas such as aviation, industrial machinery, a...[Details]
1 Introduction
Solar street lights are mainly composed of four parts: solar photovoltaic cell components, batteries, charge and discharge controllers, and lighting fixtures. The bo...[Details]
This paper designs a dot matrix LED text display screen that is easy to update, expandable, and low-cost. The way to reduce costs is
① Use the Bluetooth data transmission function of mobile ph...[Details]
PV inverter manufacturer SMA has launched its first DC arc fault circuit interrupter (AFCI) PV inverter and has received UL certification.
The new SunnyBoy AFCI inverter models include 3000-US...[Details]
1 Introduction
In recent years, there have been many major advances in the production technology and processes of automotive headlights, which have greatly improved the performance of automoti...[Details]
Overview
In spectral measurement, photomultiplier tubes (PMT) and charge-coupled devices (CCD) are often used as photoelectric converters. PMT is used in slow-changing, high-precision spectral...[Details]
Different initialization between C8051F and 80C51 series microcontrollers
In the past 30 years, major electronic component manufacturers in the world have launched their own unique single-chip...[Details]
introduction
MAX6636 is a multi-channel precision temperature monitor that can not only monitor local temperature, but also connect up to 6 diodes externally. Each channel has a programmable...[Details]
Spatial Division Multiplexing (SDM) MIMO processing can significantly improve spectrum efficiency and thus greatly increase the capacity of wireless communication systems. Spatial Division Multip...[Details]
LED light sources have many environmental advantages, but early products still have certain technical bottlenecks in heat dissipation and high brightness design that cannot be broken through....[Details]
Almost everyone in a student dormitory has a bedside lamp. But if you want to read for a while after turning off the lights and don't want to disturb your roommates' sleep, you may need a reading l...[Details]
The fluorescent lamps and energy-saving lamps we commonly use now have greatly improved luminous efficiency compared with the earlier ordinary incandescent lamps and have been widely used. With the...[Details]
Today, with the increasing integration of functions, mobile phones can also be used as portable media players (PMP), digital cameras, handheld computers (PDAs), and even global positioning systems (GP...[Details]
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