I am learning ARM and using the LPC2378 chip. I have some questions about memory expansion: 1. Does the external SDRAM only store data but not programs? Is the data stored in SDRAM written by the CPU ...
51 single-chip microcomputer is responsible for collecting data and storing it in U disk. Here, the USB controller uses CH375. According to my understanding, CH375 can dynamically switch between maste...
[i=s]This post was last edited by kangear on 2017-3-12 11:36[/i] First, build the hardware programming environment based on [url=https://bbs.eeworld.com.cn/thread-523027-1-1.html]https://bbs.eeworld.c...
Texas Instruments (TI) announced that its Stellaris ARM Cortex-M3 MCUs will be fully supported by the Code Composer Studio (CCStudio) v4 integrated development environment, and eight new Stellaris MCU...
How to directly connect the TX+/- and RX+/- signals of two different ICs with those of another chip on a circuit board? Can I do it without an isolation transformer? Please give me some advice....
1. Overview This article uses the 240XDSP launched by TI as the full digital control core of the brushless DC motor. The servo system consists of only a few system components. TMS320F240X is a high-pe...
This article discusses how to wake up a touch-sensitive device such as a tablet without touching the device, using basic gesture recognition and novel proximity sensors. The article discusses the p...[Details]
Introduction
Power subsystems are becoming more and more integrated into the overall system. Power systems have moved from being separate "essential dangerous devices" to being monitorable...[Details]
I. Introduction
In the field of power conversion, isolated converters (forward, flyback, and double-ended) with low output DC voltage all use MOSFET as the rectifier device. Since these devi...[Details]
1. What is temperature?
Heat is a type of molecular motion. The hotter an object is, the faster its molecules move. Absolute zero is defined as the temperature at which all molecular motion ...[Details]
LED lamps and bulbs are now rapidly replacing incandescent, halogen and CFL (compact fluorescent lamp) light sources in many general lighting applications. Flyback DC/DC converters are the power su...[Details]
1. Disadvantages of choosing too high a voltage level
Choosing too high a voltage level will result in too high an investment and a long payback period. As the voltage level increases, the...[Details]
At present, how various communication technologies will evolve after 3G is a focus of great concern in the industry. Especially for TD-SCDMA, whether it can achieve smooth evolution to the next gen...[Details]
At present, a large number of cooling tower fans, speed fans and special fans are in use in petroleum, chemical, pharmaceutical, metallurgical and other enterprises. Some fans have no monitoring in...[Details]
In order to prevent the lithium battery from being damaged by abnormal conditions such as overcharge, over discharge, and overcurrent, a lithium battery protection device is usually used to prevent...[Details]
Current
measurement:
Magnetic balance Hall current
sensor
is used
. The sensor can measure AC from DC to 100kHz.
In automatic measurement and control systems, it is often nec...[Details]
In the development direction of the automotive industry, electric vehicles (EV) and hybrid electric vehicles (HEV) are becoming an obvious trend. From a technical point of view, hybrid power is mor...[Details]
In the past 20 years, although the inverters that use power transistors (GTR) as inverter power devices, 8-bit microprocessors as control cores, and realize asynchronous motor speed regulation acco...[Details]
I. Introduction
The use of electronics in cars dates back to the early 20th century when electric starters replaced hand cranks. Automotive electronics became popular in the 1960s with the...[Details]
1 Overview
As a driving power source, the new battery has a range of more than 200 km within the acceptable weight range of the mass market, which provides an important way for power batteries...[Details]
PID is proportional differential adjustment. You can refer to the detailed introduction in the automatic control course for details! The positive action and the negative action in temperature contr...[Details]