51 single-chip function, function, manufacturer's single product

As one of the oldest single-chip microcomputers, 51 single-chip microcomputers have played a very important role in all walks of life.

The role of 51 microcontroller

Before the 32-bit ARM was released, embedded applications such as aerospace, 51 single-chip microcomputers are the most important controllers, and other fields, especially civilian products, 51 single-chip microcomputers penetrated into all aspects. Industrial control, it can be said that 51 single-chip computers occupy the majority of the sky. Now, 51 single-chip microcomputer also plays a decisive role, especially for small control systems. Because of the relationship between data bus and address bus, 51 single-chip microcomputer has an unparalleled advantage.

The main function of 51 single chip microcomputer

The main functions of 51 MCU include:

· 8-bit CPU · 4kbytes program memory (ROM) (52 is 8K)

256 bytes of data memory (RAM) (52 has 384 bytes of RAM)

32 I/O lines and 111 instructions, most of which are single-byte instructions

·21 dedicated registers

· 2 programmable timers/counters · 5 interrupt sources, 2 priority levels (52 with 6)

· A full duplex serial communication port

· External data memory addressing space is 64kB

· External program memory addressing space is 64kB

·Logical operation bit addressing function ·Dual in-line 40PinDIP package

· Single +5V power supply

CPU: consists of arithmetic and control logic, and also includes an interrupt system and some external special function registers;

RAM: used to store data that can be read and written, such as intermediate results of operations, final results, and data to be displayed;

ROM: used to store programs, some raw data and forms;

I/O port: Four 8-bit parallel I/O ports that can be used as both inputs and outputs;

T/C: Two timing/counters, which can work in both the timing mode and the counting mode;

Interrupt control system for five interrupt sources;

A serial I/O port of a full-duplex UART (Universal Asynchronous Receiver Transmitter) for serial communication between microcontrollers or between a microcontroller and a microcomputer;

On-chip oscillator and clock generation circuitry, quartz crystal and trimmer capacitors require an external connection. The highest oscillation frequency is 12M.

51 MCU related manufacturers and products

ARM series microcontroller

AVR series (Atmel)

Atmel AT91 series (ARM processor, etc.)

AT90 series – AVR (Atmel's high performance RISC 8-bit microcontroller, old product)

ATmega series – AVR (Atmel's high performance RISC 8-bit microcontroller, new product)

ATXmega series – AVR (Atmel's high performance RISC 32-bit microcontroller, new product)

Atmel AT89 series (Intel 8051/MCS51 architecture 8-bit microcontroller)

MARC4

Cypress MicroSystems (Cypress Microsystems)

CY8C2xxxx (PSoC)

Freescale Semiconductor

8-bit

68HC05 (CPU05)

68HC08 (CPU08)

68HC11 (CPU11)

16-bit

68HC12 (CPU12)

68HC16 (CPU16)

Freescale DSP56800 (DSPcontroller)

32-bit

Freescale 683XX (CPU32)

MPC500

MPC 860 (PowerQUICC)

MPC 8240/8250 (PowerQUICC II)

MPC 8540/8555/8560 (PowerQUICC III)

Holtek (盛群半导体)

HT48FXX Flash I/O type

HT48RXX I/O type

HT46RXX A/D type

HT49RXX LCD type

Intel

8-bit

8XC42

MCS48

MCS51: The Intel 8051 series has a long history and is compatible with many products.

8xC251

16-bit

MCS96 series

MXS296

32-bit

I960

Microchip (Microchip) PIC Microcontroller Family

8-bit : PIC10 PIC12 PIC16 PIC18

16-bit : PIC24F PIC24H dsPIC30 dsPIC33

32bit : PIC32 (using MIPS M4K core architecture)

National Semiconductor

COP8

CR16

NEC

78K

NXP Semiconductors

LPC2000

LPC900

LPC700

Parallax, Inc.

BASIC Stamp

Renesas Technology Series MCU

Renesas 16-bits

Renesas M16C Series

Renesas M32C Series

Renesas R8C Series

Renesas M16C/TIny Series

Renesas R8C/TIny Series

Renesas H8/TIny Series

STMicroelectronics

STM32 series (ARM Cortex-M3 series, 32-bit)

STM8 series (autonomous RISC instruction set, 8 bits)

SyncMOS Xinmao International Technology Full Range of Single Chip Microcomputer

SM59RXXA2 8-bits 1T (RISC)

SM59DXXG2 8-bits 6T (ISP)

SM59XX 8-bits 12T (ISP)

SM89XX 8-bits 12T (TradiTIonal 8051)

SM79XX 8-bits 12T(Customization)

PADAUK Yingguang Technology Full Range of Single Chip Microcomputers (Multi-core Microcontrollers)

P201CS/CD 8-bits

P211CS/CD 8-bits

p232CS/CD 8-bits

P234CS/CD 8-bits

ZiLOG

Z8

Z86E02

STC macro crystal series single chip microcomputer

STC89C series 6T/12T enhanced single chip microcomputer (Intel 8051 architecture, with external bus)

STC11F/11L series 2T enhanced microcontroller (Intel 8051 enhanced architecture, no external bus program support)

STC12C/12LE series 2T enhanced MCU (Intel 8051 enhanced architecture, no external bus program support)

STC15C/15LE series 2T enhanced microcontroller (Intel 8051 enhanced architecture, no external bus program support, under development)

Kernel-IC Huaxin Microcontroller LS Series

LSx051 series 12T dual-core microcontroller (Intel 8051 architecture, no external bus)

LSx151 series 12T triple-core microcontroller (Intel 8051 architecture, no external bus)

LS052A series 6T triple-core microcontroller (Intel 8051 architecture, no external bus)

Other series of single chip microcomputer

Msp430 series MCU

8098, 80196 series single chip microcomputer

AT8P5X series MCU

CZG8000 series MCU

Nuts

General materials of hot dip galvanized Screw Bolt nut is Q235 ,35K ,45# ,35CrMo,etc.According to the engineering requirements, the corresponding different grades Screw bolt nut  are selected respectively .Generally ,the high-grade Nut products such as 35K,45# C35CrMo are prreferred for UHV lines, Mainly include : 

1) High strength  Nut  

2)35 Crmo Nut 

3) Thinckening of Nut 

4) Enlarged bore Nut 

5) Fine buckle Nut 

6)Slotted Nut 

7)Flange Nut 

8) Lock Nut 


According to strength grades ,there are 4,6,8,8.8,10.9grade ,for construction of differeent fields ,can use hot dip galvanized Flange nut ,Helix nut ,or other nuts .


Flange Nut,Carbon Steel Nut,Lock Nut,Stainless Steel Nut,Helix Nut

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