High-speed hardware Ethernet technology designed by W5100
Ethernet is widely used because of its low cost, easy integration, and long transmission distance.
The traditional Ethernet solution often uses the main control CPU to connect the physical layer interface chip, and writes the Ethernet communication protocol in the main controller. This method requires the preparation of cumbersome programs and takes a lot of time to debug. Since the network protocols are generally relatively large, the stability after writing the software is not good, which is not conducive to the rapid development and stable operation of the system. And customers often have new needs, this way of using software to achieve it is difficult to meet the requirements of frequent updates and upgrades. Therefore, one way is to separate the processing of the network protocol from the system processor and allow the input / output of applications and data to be executed on different hardware to adapt to various conditions. It divides the processing of the network protocol into a control part executed by a specific processor and a hardware line part. The advantage of this method is that it has a shorter development cycle and higher flexibility, and can increase stability and effectively reduce the main CPU. Burden, modular design also facilitates future system upgrades.
The high-speed hardware Ethernet protocol chip W5100 introduced by Beijing Bokong Automation Co., Ltd. solves the above problems well. It also integrates a highly mature TCP / IP protocol stack, Ethernet MAC layer, PHY layer, etc., supports TCP, UDP, IPv4, ICMP, ARP, IGMP and PPPoE and other protocols, these protocols have been verified in many fields for many years. It supports 4 independent Socket communications, the internal 16K byte send / receive buffer can quickly exchange data, and the maximum effective communication rate can reach 25Mbps. The use of W5100 does not need to consider the control of Ethernet, only need to carry out simple port (Socket) programming, as simple as accessing external memory. It provides two parallel bus interfaces (direct bus and indirect bus) and serial SPI interface. W5100 greatly reduces the workload of hardware interface design and network programming, and can realize a reliable and stable operation of remote data communication system, which can be widely used in various safety inspections, power system measurement and monitoring audio and video transmission, remote information transmission, etc. field. The following figure 1 is the system architecture of W5100:
Figure 1 W5100 system architecture
For example, by introducing Ethernet technology into an embedded system with DSP as the core, the DSP chip has a network connection function, and the PC exchanges and controls a large amount of data with the DSP embedded module through a network card.
The following is an embedded network control system that combines TMS320F2812 and W5100. The application program is executed by DSP, while the network protocol processing and data transmission are implemented by W5100. It is not necessary to consider the network protocol when designing the system. For details, you only need to explain and execute the instructions and data transmitted from the network chip to connect to the Internet network, and do not need the support of the operating system. It has the characteristics of simple interface circuit and convenient programming.1.27mm (0.050") Pitch Female Headers
Like the 1.27mm pitch male header, the 1.27mm pitch female header is used in densely-packed devices, requiring space-saving connections. The low profile, 1.27mm pitch female header addresses the need for connecting a variety of board-to-board configurations, with vacuum pick and place that makes it suitable for high volume automated manufacturing. It can be available in varying elevated stack heights, pass-through, rugged, high-density, and in numerous low-cost designs.
Antenk offers 1.27mm pitch female headers in either SMT or THM orientation at high quality and affordable China-quoted price that snuggly fits with the pins of a male header and acts as a receptacle.
Assembly and service is simple with either vertical (straight), elevated or at a right angle orientation, which can dissipate current of about 1.0 A or less in a tape and reel packaging. The filleted corners can also remove shadowing allowing optimization of LED output.
The 1.27mm pitch female headers are commonly found in PC`s and are also made to work in Arduino boards, Arduino Pro and Arduino Mega with either single or double-row female headers, facilitating connections for programming and incorporation into other circuits. They have the perfect height for clearing the USB-B connector and great for stacking multiple shields.
Female header always called as [Header connector", Antenk provide widely range of header connector, from 2.54mm (.100″ inch) pitch to 1.0mm (.039″ inch) pitch. The number of pins (contacts) is from 2 to 40 pins per orw. There are three type: Straight (Dip Vertical), Right angle, SMT (surface mount).
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Applications of 1.27mm Pitch Female Headers
Its small size is most suitable for PCB connections of small equipment and devices such as:
Arduino Boards
Architectural and sign lighting
Retail and display lighting
Fluorescent LED retrofit lighting
Cabinet or furniture lighting
Commercial / residential cove lighting
WiFi equipment
Gaming consoles,
Measurement instruments
Medical Diagnostic and Monitoring equipment
Communications: Telecoms and Datacoms
Industrial and Automotive Control and Test
At one side of this female header is a series of pins which can either be mounted and soldered directly onto the surface of the PCB (SMT) or placed into drilled holes on the PCB (THM).
Through-Hole (Poke-In)
Best used for high-reliability products that require stronger connections between layers.
Aerospace and military products are most likely to require this type of mounting as these products experience extreme accelerations, collisions, or high temperatures.
Useful in test and prototyping applications that sometimes require manual adjustments and replacements.
1.27mm vertical single row female header, 1.27mm vertical dual row female header, 1.27mm Elevated single row female header, 1.27mm Elevated dual row female Header, 1.27mm right-angle single row female header and 1.27mm right-angle dual row female header are some examples of Antenk products with through-hole mount type.
Surface-Mount
The most common electronic hardware requirements are SMT.
Essential in PCB design and manufacturing, having improved the quality and performance of PCBs overall.
Cost of processing and handling is reduced.
SMT components can be mounted on both side of the board.
Ability to fit a high number of small components on a PCB has allowed for much denser, higher performing, and smaller PCBs.
1.27mm Right-angle Dual Row female header, 1.27mm SMT Single row female header, 1.27mm SMT Dual row female header and 1.27mm Elevated Dual Row female Header are Antenk`s SMT female headers.
Soldering Temperature for 1.27mm Pitch Female Headers
Soldering SMT female connectors can be done at a maximum peak temperature of 260°C for maximum 60 seconds.
Pin-Type: Vertical (Straight) and Right-Angle
1.27mm pitch female headers may be further classified into pin orientation as well, such as vertical or straight female header or right-angle male header.
Vertical or Straight Female Header Orientation
One side of the series of pins is connected to PCB board in which the pins can be at a right-angle to the PCB surface (usually called "straight" or [vertical") or.
Right-Angle Pin Female Header Orientation
Parallel to the board's surface (referred to as "right-angle" pins).
Each of these pin-types have different applications that fit with their specific configuration.
PCB Connector Stacking
Profile Above PCB
This type of configuration is the most common way of connecting board-to-board by a connector. First, the stacking height is calculated from one board to another and measured from the printed circuit board face to its highest insulator point above the PCB.
Elevated Sockets/Female Headers
Elevated Sockets aka Stacked sockets/receptacles or Mezzanine are simply stacked female headers providing an exact distance requirement between PCBs that optimizes electrical reliability and performance between PCB boards.
Choosing this type of stacking configuration promotes the following benefits:
Connector Isolation - the contacts are shrouded preventing cable connection mishaps and good guidance for the mating header connectors.
For off-the-shelf wireless PCB module, stacking height is optimized with elevated sockets.
Offers superior strength and rigidity.
Polarisation prevents users from inverted insertion.
Single, Dual or Multiple Number of Rows
For a 1.27mm straight or vertical female header, the standard number of rows that Antenk offers ranges from 1 to 2 rows. However, customization can be available if 3 ,4 or n number of rows is needed by the customer. Also, the number of contacts for the single row is about 2-40 pins while for dual row, the number contacts may vary from 2-80 pins.
Pin Material
The pins of the connector attached to the board have been designed with copper alloy. With customer`s demand the pins can be made gold plated.
Custom 1.27mm Pitch Female Headers
Customizable 1.27 mm pitch female headers are also available, making your manufacturing process way faster as the pins are already inserted in the headers, insulator height is made at the right size and the accurate pin length you require is followed.
Parts are made using semi-automated manufacturing processes that ensure both precision and delicacy in handling the headers before packaging on tape and reel.
Tape and Reel Packaging for SMT Components
Antenk's SMT headers are offered with customizable mating pin lengths, in which each series has multiple number of of circuits, summing up to a thousand individual part number combinations per connector series.
The tape and reel carrier strip ensures that the headers are packaged within accurately sized cavities for its height, width and depth, securing the headers from the environment and maintaining consistent position during transportation.
Antenk also offer a range of custom Tape and reel carrier strip packaging cavities.
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ShenZhen Antenk Electronics Co,Ltd , https://www.antenkconn.com