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Before reading this article, I hope you have some simple concepts about computers. You 'd better have learned the computer composition principles and some basic concepts. If you have learned 51 series of single-chip microcomputer and used 51 series of single-chip microcomputer for some development, it is very easy to read these contents. It doesn't matter if you don't hav
Comparison of main ZigBee chip vendor's ZigBee solution competitiveness
Comparison of main ZigBee chip vendor's ZigBee solution competitivenessAt present, there are major ZigBee chip vendors (2.4 GHz), including Ti/chipcon, Ember (ST), jennic (), Freescale, and microchip.Currently, ZigBee technology provides three methods:1) ZigBee RF + MCU, such as Ti CC2420 + M
a method of measuring memory chip with multimeter
In the motherboard and memory data pins are 64, d0-d63, in order to protect the memory of the data bits, in the d0-d63 of these 64 bits of data are added a resistor with a small resistance to the current limiting effect. The main principle of the tester is to use the program to repeat the test memory chip each data bit pin, to see if there is no breakdown o
Analysis on the attack technology of Single Chip Microcomputer
According to the current integrated circuit development technology, there are four main techniques for attacking single-chip microcomputer:
(1) software attacks
This technology usually uses processor communication interfaces and uses protocols, encryption algorithms, or security vulnerabilities in these algorithms for attacks. A typical case of
Today, the circuit diagram of SD card module, found that the operating voltage of SD card is 3.3V, so need to use voltage regulator chip to convert 5V power supply to 3.3V voltage, so a little bit about the voltage regulator chip data
We choose the voltage regulator chip is asm1117-3.3, encapsulated as SOT-223
But in the drawing of the schematic diagram of the
This paper mainly discusses the STM32 of conventional chip capacity and the difference between large and small capacity of STM32 chip. The STM32 large capacity chip is a chip that includes up to 512K bytes of flash memory and 64K bytes of SRAM for large capacity. STM32 small capacity
"abstract" in order to reduce the development difficulty of DSP system software, to ensure the real-time nature of the system, shorten the development cycle, the embedded real-time operating system Μc/os-ⅱ porting to the DSP chip is a common method at present. This paper introduces the characteristics of embedded real-time operating system (Μc/os-ⅱ), and analyzes the porting method of Μc/os-ⅱ operating system in the current popular DSP
Ing means a one-to-one correspondence. Re- ing is the one-to-one relationship of re-allocation.
We can regard the memory as a black box with the output and input ports. As shown in, the input is the address, and the output is the data stored on the corresponding address. Of course, this black box is made available by complicated semiconductor circuits. We do not care about the specific implementation method. The storage unit is generally byte. In this way, each byte storage unit corresponds to a
MCS-51 Series MCU internal only two external interrupt source input, when the external interrupt source more than two, you have to expand, and here are two simple extension methods:First, the use of hardware requests and software Query method:This method is to introduce each interrupt source into the MCU external interrupt source input via hardware "or non (highly effective, such as CD4002)" (and, low-effective) gate(INT0 or INT1), while the external interrupt source is sent to an input-output p
1.1 What is a single chip microcomputer?Single-chip microcomputer is a piece of silicon chip integrated microprocessor, memory and a variety of input/output interface chips, so that a chip has the properties of the computer, which is known as a single-chip microcomputer, ref
First, the concept of single-chip microcomputer, application.Microcontroller is also called MCU (microcontroller).is aIC Chip, is the use ofLarge scale integrated circuittechnology that has the ability to process dataCpuCPU,Random memoryRAM,Read-only memory rom, multiple I/O ports, andInterrupt System,Timer/Counter and other functions (may also include a display driver circuit,Pulse width modulationcircuit,
Kickfire: the SQL chip boosts the MySQL data warehouse to equip every MySQL database server with an SQL chip. this is a vision of Kickfire to focus on the data warehouse market.
Kickfire launched the Kickfire Database Appliance test version integrated with the new SQL chip in April 14. The company said that the SQL chip
The idea of the designer of the s5pv210 chip(1) After the chip starts to execute Irom (BL0) content, carries on the initialization of the clock and the watchdog and so on peripheral, will copy BL1 and BL2 to the on-chip SRAM;(2) Jump to the on-chip SRAM execution, complete the initialization of the external SDRAM, and
Single chip computer C language one ___________________________________________________________________
_____________________PretreatmentA macro definition:
1, without parameters:#define-Identifier constant expression/* #define是宏定义命令, Macro name (identifier) good habit to use the capital * *#define NIL 0x80
2, with parameters:/* equivalent to small function * *#define Macro Name (parameter table) string/* Not only to line word string replacement also
The RS232 standard was born before RS485, but there are several deficiencies in RS232: The signal level of the interface is higher, to more than 10 V, the use of improper easy to damage the interface chip, level standard is also incompatible with the TTL level. Transmission rate is limited, can not be too high, generally to zero or zero bits per second (kb/s) to the limit. The interface uses signal lines and GND to form a common mode of communication
How to interconnect single-chip serial communication rxd with txd
Category:8051
2012-04-0711: 35
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Reprinted from: http://blog.csdn.net/sdwuyulunbi/article/details/6632382
I believe many people are confused about how to connect rxd and txd when the microcontroller communicates with a computer or chip. In some circuit diagrams, some are
The firmware upgrade instance of ms6000 chip with melfas describes the installation process of image files in the general array format. The chip requires a pin combination to complete a certain sequence and enable a set of command codes to enter the burning mode, in the burning mode, the I2C address is 0xfa (different from the address 0x40 when the chip works nor
mt6575 Chip is an excellent evaluation in the industry chip, its excellent performance parameters and practical user experience makes the mt6575 chip has become a reputation and cost-effective representative. Then you may want to follow the small together to learn a few about the mt6575 chip related information, we wil
recently, is learning ARM, so casually learn a single-chip microcomputer, to help understand. as mentioned in "Arm Learning note entry", embedded processors are divided into three types: embedded microprocessors, embedded microcontrollers,Embedded microcontroller is a microcontroller, it will CPU, memory and other peripherals are packaged together. 80C51 Series: 80C51 is a typical species in the MCS-51 series, and the CMOS process microcontroller pro
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