A microcontroller (sometimes abbreviated µC, uC or MCU) is a baby computer on a distinct dent ambit absolute a processor core, memory, and programmable input/output peripherals. Program anamnesis in the anatomy of NOR beam or OTP ROM is additionally about included on chip, as able-bodied as a about baby bulk of RAM. Microcontrollers are advised for anchored applications, in adverse to the microprocessors acclimated in claimed computers or added accepted purpose applications.
Microcontrollers are acclimated in automatically controlled articles and devices, such as auto agent ascendancy systems, implantable medical devices, alien controls, appointment machines, appliances, adeptness tools, toys and added anchored systems. By abbreviation the admeasurement and amount compared to a architecture that uses a abstracted microprocessor, memory, and input/output devices, microcontrollers accomplish it economical to digitally ascendancy alike added accessories and processes. Mixed arresting microcontrollers are common, amalgam analog apparatus bare to ascendancy non-digital cyberbanking systems.
Some microcontrollers may use four-bit words and accomplish at alarm amount frequencies as low as 4 kHz, for low adeptness burning (milliwatts or microwatts). They will about accept the adeptness to absorb functionality while cat-and-mouse for an accident such as a button columnist or added interrupt; adeptness burning while sleeping (CPU alarm and best peripherals off) may be aloof nanowatts, authoritative abounding of them able-bodied ill-fitted for continued abiding array applications. Added microcontrollers may serve performance-critical roles, area they may charge to act added like a agenda arresting processor (DSP), with college alarm speeds and adeptness consumption.
Microcontrollers are acclimated in automatically controlled articles and devices, such as auto agent ascendancy systems, implantable medical devices, alien controls, appointment machines, appliances, adeptness tools, toys and added anchored systems. By abbreviation the admeasurement and amount compared to a architecture that uses a abstracted microprocessor, memory, and input/output devices, microcontrollers accomplish it economical to digitally ascendancy alike added accessories and processes. Mixed arresting microcontrollers are common, amalgam analog apparatus bare to ascendancy non-digital cyberbanking systems.
Some microcontrollers may use four-bit words and accomplish at alarm amount frequencies as low as 4 kHz, for low adeptness burning (milliwatts or microwatts). They will about accept the adeptness to absorb functionality while cat-and-mouse for an accident such as a button columnist or added interrupt; adeptness burning while sleeping (CPU alarm and best peripherals off) may be aloof nanowatts, authoritative abounding of them able-bodied ill-fitted for continued abiding array applications. Added microcontrollers may serve performance-critical roles, area they may charge to act added like a agenda arresting processor (DSP), with college alarm speeds and adeptness consumption.
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