mcu 8051

Content Summary:At present, the general color LCD connection methods have so several: MCU mode, RGB mode, SPI mode, VSync mode, Mddi mode. MCU mode: Currently the most commonly used connection mode, is generally 80 system (68 system no longer exists). Data bits are transmitted in 8-bit, 9-bit, 16-bit, and 18-bit. Lines are divided into: cs/,rs (Register selection), rd/,wr/, and then the data line. The advan

Texas Instrument (Ti) announced the launch of its new simplelink Wi-Fi for Iot applications? Cc3100 and cc3200 platforms. Among TI's many new, simple, and low-power simplelink wireless connection solutions for Iot applications, the simplelink Wi-Fi series is the first in the market. Chip Description: Start your design with the industry's first single-chip microcontroller unit (MCU) with built-in Wi-Fi connectivity. The simplelink cc3200 device for Iot

angle in "degrees", the more commonly used form of labeling is directly marked the total horizontal, vertical range, such as: 150/120 degrees, the current lowest visual angle of 120/100 degrees (horizontal/vertical), below this value is not acceptable, it is best to reach 150/120 degrees above.3.featuresThe LCD features are as follows:Low Power MicropowerSmall and delicate appearance, only 6.5~8mm thicknessPassive display type (no glare, no eye irritation, no eye strain)Display large amount of

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optimize the code. The larger the code size, the more often it can be optimized. To 8051来 said, access chip internal data area (0~7FH) memory speed is the fastest, direct access, a command can read and write, and Idata area (80H~FFH) Although still memory area, but because the address assignment with special register SFR coincident, only indirect address access, Two instructions to read and write, speed slightly slower, and external memory XData area

the increase count mode Switch (CLK) // Select the clock source { Case 'A' : Case 'A' : Tactl | = tassel_1; Break ; // Aclk Case 'S' : Case 'S' : Tactl | = tassel_2; Break ;// Smclk Case 'E' : Tactl | = tassel_0; Break ; // External input (taclk) Case 'E' : Tactl | = tassel_3; Break ; // External input (taclk inverse) Default : Return (0 ); // Parameter error } Switch (Div)// Select the frequency division Coefficient { Case 1: tactl | = id_0; Break ; // 1 Case 2: tactl | = id_1; Bre

Monitor power failure with no display This is a very simple fault, the general LCD display extension inside the power supply and external power supply two, outside the common some. Regardless of that power, its structure is more simple than the CRT display power, easy to damage the general is a number of small components, such as insurance pipe, Rectifier bridge, 300V filter capacitor, power switch tube, power management IC, rectifier output diode, filter capacitors and so on. The monitor is p

Single-chip microcomputer IO Port standard bidirectional, push-pull, high resistance, open-drain mode, LED induction light off experiment11 Long vacation at home rotten, nothing to do, DIY technology get up!"An experimental study on the working type of the 12C enhanced microcontroller I/O port"Animation video effect Download: STC single-chip head file "51cto--> single-chip microcomputer-->led induction light-off experiment"Download link Link: http://pan.baidu.com/s/1pJKK4w7 Password: a0re1, with

services.First of all, don't be busy making bricks, I'll tidy up my thoughts. The key to using the global unique ID (each MCU has a unique ID) is to prevent the program from being read easily, and even hex ROM does not have to be encrypted at all, and it does not matter how easy it is to decipher the hex code. In fact, it only takes two steps: 1. Think of a very good algorithm, using the MCU GUID to genera

The difference between Flash and EEPROM (reprint)Flash and EEPROM The biggest difference is the flash by sector operation, EEPROM operation by Byte, the two addressing methods are different, the structure of the storage unit is also different, FLASH circuit structure is simpler, the same capacity for the chip area is small, the cost is naturally lower than EEPROM, Therefore, it is suitable for use as program memory, and EEPROM is more used as nonvolatile data memory. Of course, using Flash to do

　　Monitor power failure with no display This is a very simple fault, the general LCD display extension inside the power supply and external power supply two, outside the common some. Regardless of that power, its structure is more simple than the CRT display power, easy to damage the general is a number of small components, such as insurance pipe, Rectifier bridge, 300V filter capacitor, power switch tube, power management IC, rectifier output diode, filter capacitors and so on. 　　The monitor

light-induced Temperature and exposure changes. The SCCB interface used in the chip is a three-line Continuous bus (SCS, SIO1, and SIO0) developed by OmniVision to control image sensors ), SCS are used for chip selection (low-level effective). When the chip is selected, SIO1 and SIO0 are functional and use compatible with I2C bus. In addition, the OV9620 also provides a control signal input (PWDN), which can be used to implement power-down switching. In this design, because OV9620 works with ot

definition of a global variable, the MCU is less than a available data memory space, if the definition of too many global variables, will cause the compiler does not have enough memory to allocate. And local variables are mostly located in MCU internal registers, in most MCU, register operation speed is faster than data memory, instruction is more flexible, it i

Speaking of the 51 MCU clock first thought about 51 o'clock how to work. Micro-controller to work must have a "power", for 51 single-chip microcomputer, this "power" is the clock source. A 12MHz crystal oscillator is used as the clock source for general applications. Generally the first method is used more often. When the internal oscillation mode is selected, there are two small capacitors next to the crystal oscillator. These two capacitors are call

will only be converted to 44.1kHz CD format when the final mastering is processed, thus reducing the distortion caused by multiple sample rate conversions. Q: What sampling frequency should be chosen by the Usbaudio plugged into the computer. A: In the computer field, the AC97 specification as the audio hardware codec standard only stipulates 48kHz. Q: The commonly used audio device is 12 darker than the feature bit depth or 24 than the feature bit depth. A: The highest quality standards in th

These days to solve the STM32 MCU's I²c bus occupancy (bus BUSY) problem, feel is a good learning, from the text can be learned from the thinking of the problem of the logical logic, the end of the text and pointed out that often error points, in this share to everyone.Problem description stm32f207 MCU has three groups of I2C,I2C1~I2C3, the first edition of this project hardware using I2C1 three chip (Dsp/codec/eeprom), the operation is good.

First, background:Recently, a project has been taken over, the core chip is both the LPC17XX series MCU, core arm of the COTEX-M3 core.If you want to play with an MCU, you have to take care of its clock!The clock is to the MCU, like the human heart. It gives the AHB, APB Bus The blood (clock frequency), and the devices that hang on the AHB (Advance High bus) bus

line.Each device connected to the bus has its own address, whether it is MCU, LCD driver, memory, or ASIC. Each chip can be either the receiver or the sender, or both, depending on their functions. Obviously, the LCD driver is only a receiver, and the memory or I/O chip can be both a sender or receiver.I2C bus is a multi-master bus. That is to say, more than one IC that can initiate data transmission commands can be connected to it. According to the

Software Design of Single-chip Microcomputer Based on rtx51 With the increasingly wide application of single-chip microcomputer, the demand for software development efficiency is getting higher and higher, from assembly to C language, and then to the operating system. MCS51, as the main force of the ever-increasing single-chip microcomputer world, has been greatly developed for its rtx51, and has low hardware requirements, it is easy to use and flexible, so it is more and more widely used in th

0ffffh, the off-chip program memory commands are automatically executed;When the EA is low, the CPU only executes off-chip program memory commands. The following content is reproduced in Baidu Encyclopedia: Ale/prog address lock control signal When the system is extended, ale is used to control the low 8-bit output address of P0 port to send latches to lock up, so as to isolate the low address and data. (In the subsequent extended courses, we will see the