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Serial Peripheral Interface
The Serial Peripheral Interface (SPI) is a synchronous serial communication interface specification used for short-distance communication, primarily in embedded systems. The interface was developed by Motorola in the mid-1980s and has become a ''de facto'' standard. Typical applications include Secure Digital cards and liquid crystal displays. SPI devices communicate in full duplex mode using a master-slave architecture usually with a single master (though some Atmel and Silabs devices support changing roles on the fly depending on an external (SS) pin). The master (controller) device originates the frame for reading and writing. Multiple slave-devices may be supported through selection with individual chip select (CS), sometimes called slave select (SS) lines. Sometimes SPI is called a ''four-wire'' serial bus, contrasting with three-, two-, and one-wire serial buses. The SPI may be accurately described as a synchronous serial interface, but it is different from the Sync ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1-Wire
1-Wire is a device communications bus system designed by Dallas Semiconductor Corp. that provides low-speed (16.3 kbit/s) data, signaling, and power over a single conductor. 1-Wire is similar in concept to I²C, but with lower data rates and longer range. It is typically used to communicate with small inexpensive devices such as digital thermometers and weather instruments. A network of 1-Wire devices with an associated master device is called a MicroLAN. The protocol is also used in small electronic keys known as a Dallas key or . One distinctive feature of the bus is the possibility of using only two wires — data and ground. To accomplish this, 1-Wire devices include an 800 pF capacitor to store charge and power the device during periods when the data line is active. Usage example 1-Wire devices are available in different packages: integrated circuits, a TO-92-style transistor, and a portable form called an or Dallas key which is a small stainless-steel package ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SPI 8-bit Circular Transfer
SPI may refer to: Organizations * Indian Protection Service (''Serviço de Proteção ao Índio''), Brazil * Shotmed Paper Industries, an Egyptian paper manufacturers * Simulations Publications, Inc., a former US board game publisher * Sony Pictures Imageworks * Stream Processors, Inc, a semiconductor company * Sisters of Perpetual Indulgence, an LGBT group * Society for Philosophical Inquiry * Society of the Plastics Industry, a U.S. trade association * Software in the Public Interest * Software Patent Institute, US * St. Pascual Institution, Philippines school * St. Paul's Institution, a school in Malaysia * Sustainable Preservation Initiative, of cultural heritage * Sveriges Pensionärers Intresseparti, or Swedish Senior Citizen Interest Party * Social Progress Imperative, a US-based nonprofit created in 2012 Computing * SCSI Parallel Interface * Serial Peripheral Interface * Security Parameter Index in IPSec tunneling * Service provider interface, an API * Software Pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Variations
Variation or Variations may refer to: Science and mathematics * Variation (astronomy), any perturbation of the mean motion or orbit of a planet or satellite, particularly of the moon * Genetic variation, the difference in DNA among individuals or the differences between populations ** Human genetic variation, genetic differences in and among populations of humans * Magnetic variation, difference between magnetic north and true north, measured as an angle * ''p''-variation in mathematical analysis, a family of seminorms of functions * Coefficient of variation in probability theory and statistics, a standardized measure of dispersion of a probability distribution or frequency distribution * Total variation in mathematical analysis, a way of quantifying the change in a function over a subset of \mathbb^n or a measure space * Calculus of variations in mathematical analysis, a method of finding maxima and minima of functionals Arts * Variation (ballet) or pas seul, solo dance or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
High Impedance
In electronics, high impedance means that a point in a circuit (a node) allows a relatively small amount of current through, per unit of applied voltage at that point. High impedance circuits are low current and potentially high voltage, whereas low impedance circuits are the opposite (low voltage and potentially high current). Numerical definitions of "high impedance" vary by application. High impedance inputs are preferred on measuring instruments such as voltmeters or oscilloscopes. In audio systems, a high-impedance input may be required for use with devices such as crystal microphones or other devices with high internal impedance. Analog electronics In analog circuits a high impedance node is one that does not have any low impedance paths to any other nodes ''in the frequency range being considered''. Since the terms low and high depend on context to some extent, it is possible in principle for some high impedance nodes to be described as low impedance in one context, and hi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tri-state Output
In digital electronics, a tri-state or three-state buffer is a type of digital buffer that has three stable states: a high output state, a low output state, and a high-impedance state. In the high-impedance state, the output of the buffer is disconnected from the output bus, allowing other devices to drive the bus without interference from the tri-state buffer. This can be useful in situations where multiple devices are connected to the same bus and need to take turns accessing it. Tri-state buffers are commonly used in bus-based systems, where multiple devices are connected to the same bus and need to share it. For example, in a computer system, multiple devices such as the CPU, memory, and peripherals may be connected to the same data bus. To ensure that only one device can transmit data on the bus at a time, each device is equipped with a tri-state buffer. When a device wants to transmit data, it activates its tri-state buffer, which connects its output to the bus and allows it t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Analog-to-digital Converter
In electronics, an analog-to-digital converter (ADC, A/D, or A-to-D) is a system that converts an analog signal, such as a sound picked up by a microphone or light entering a digital camera, into a digital signal. An ADC may also provide an isolated measurement such as an electronic device that converts an analog input voltage or current to a digital number representing the magnitude of the voltage or current. Typically the digital output is a two's complement binary number that is proportional to the input, but there are other possibilities. There are several ADC architectures. Due to the complexity and the need for precisely matched components, all but the most specialized ADCs are implemented as integrated circuits (ICs). These typically take the form of metal–oxide–semiconductor (MOS) mixed-signal integrated circuit chips that integrate both analog and digital circuits. A digital-to-analog converter (DAC) performs the reverse function; it converts a digital signa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maxim Integrated Products
Maxim Integrated, a subsidiary of Analog Devices, designs, manufactures, and sells analog and mixed-signal integrated circuits for the automotive, industrial, communications, consumer, and computing markets. Maxim's product portfolio includes power and battery management ICs, sensors, analog ICs, interface ICs, communications solutions, digital ICs, embedded security, and microcontrollers. The company is headquartered in San Jose, California, and has design centers, manufacturing facilities, and sales offices worldwide. History Maxim was founded in April 1983. The founding team included Jack Gifford, a semiconductor industry pioneer since the 1960s; Fred Beck, an IC sales and distribution pioneer; Dave Bingham, General Electric’s Scientist of the Year in 1982; Steve Combs, a pioneer in wafer technologies and manufacturing; Lee Evans, also a pioneer in CMOS analog microchip design and General Electric’s Scientist of the Year in 1982; Dave Fullagar, inventor of the first inter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Signal Edge
In electronics, a signal edge is a transition of a digital signal from low to high or from high to low: * A rising edge (or positive edge) is the low-to-high transition. * A falling edge (or negative edge) is the high-to-low transition. In the case of a pulse, which consists of two edges: * The leading edge (or front edge) is the first edge of the pulse. * The trailing edge (or back edge) is the second edge of the pulse. See also *Flip-flop (electronics), an edge-triggered circuit *Rise time In electronics, when describing a voltage or current step function, rise time is the time taken by a signal to change from a specified low value to a specified high value. These values may be expressed as ratiosSee for example , and . or, equivale ..., for a signal transition References Digital electronics {{Electronics-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chip Select
Chip select (CS) or slave select (SS) is the name of a control line in digital electronics used to select one (or a set) of integrated circuits (commonly called "chips") out of several connected to the same computer bus, usually utilizing the three-state logic. One bus that uses the chip/slave select is the Serial Peripheral Interface Bus (SPI bus). When an engineer needs to connect several devices to the same set of input wires (e.g., a computer bus), but retain the ability to send and receive data or commands to each device independently of the others on the bus, they can use a chip select. The chip select is a command pin on many integrated circuits which connects the I/O pins on the device to the internal circuitry of that device. When the chip select pin is held in the inactive state, the chip or device is "deaf", and pays no heed to changes in the state of its other input pins; it holds its outputs in the high impedance state, so other chips can drive those signals. When ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Logic Level
In digital circuits, a logic level is one of a finite number of states that a digital signal can inhabit. Logic levels are usually represented by the voltage difference between the signal and ground, although other standards exist. The range of voltage levels that represent each state depends on the logic family being used. A '' logic-level shifter'' can be used to allow compatibility between different circuits. 2-level logic In binary logic the two levels are logical high and logical low, which generally correspond to binary numbers 1 and 0 respectively. Signals with one of these two levels can be used in boolean algebra for digital circuit design or analysis. Active state The use of either the higher or the lower voltage level to represent either logic state is arbitrary. The two options are active high and active low. Active-high and active-low states can be mixed at will: for example, a read only memory integrated circuit may have a chip-select signal that is active-low, bu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SPI Single Slave
SPI may refer to: Organizations * Indian Protection Service (''Serviço de Proteção ao Índio''), Brazil * Shotmed Paper Industries, an Egyptian paper manufacturers * Simulations Publications, Inc., a former US board game publisher * Sony Pictures Imageworks * Stream Processors, Inc, a semiconductor company * Sisters of Perpetual Indulgence, an LGBT group * Society for Philosophical Inquiry * Society of the Plastics Industry, a U.S. trade association * Software in the Public Interest * Software Patent Institute, US * St. Pascual Institution, Philippines school * St. Paul's Institution, a school in Malaysia * Sustainable Preservation Initiative, of cultural heritage * Sveriges Pensionärers Intresseparti, or Swedish Senior Citizen Interest Party * Social Progress Imperative, a US-based nonprofit created in 2012 Computing * SCSI Parallel Interface * Serial Peripheral Interface * Security Parameter Index in IPSec tunneling * Service provider interface, an API * Software Pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
