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| Direct Memory Access controller - a device that allows data to be transferred to or from memory or peripherals bypassing the system Central Processing Unit (CPU). |
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| Controller Area Network - a serial data bus for real-time applications, originally developed for use in the automotive industry. |
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| Serial Peripheral Interface bus -a synchronous serial data link standard named by Motorola that operates in full duplex mode. |
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| Synchronous Serial Port module - a serial interface useful for communicating with other peripherals or microcontroller devices. |
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| Inter-Integrated Circuit - a multi-master serial computer bus invented by Philips that is used to attach low-speed peripherals to a motherboard, embedded system, or cellphone. |
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Universal Asynchronous Receiver/Transmitter - an integrated circuit used for RS-232C serial communications, containing a transmitter (parallel-to serial converter) and a receiver (serial-to-parallel converter), each clocked separately. |
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| Universal Synchronous Asynchronous Receiver Transmitter module - one of the two serial I/O modules (other is the SSP module). The USART is also known as a Serial Communications Interface or SCI. |
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| Infrared Data Association - defines physical specifications communications protocol standards for the short-range exchange of data over infrared light, for uses such as personal area networks. |
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| General-Purpose Input/Output pins - offer flexibility for a variety of connections. |
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Pulse Width Modulation - a powerful technique for digitally encoding analog signal levels. |
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| A watchdog timer can generate nonmaskable interrupts (NMIs) or a reset when a time-out value is reached. The watchdog timer is used to regain control when a system has failed due to a software error or to the failure of an external device to respond in the expected way. |
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| Analog-to-Digital Converter (abbreviated ADC, A/D or A to D) - an electronic integrated circuit, which converts continuous signals to discrete digital numbers. The reverse operation is performed by a digital-to-analog converter (DAC). |
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| Digital-to-Analog Converter (abbreviated DAC D/A or D-to-A) - a device for converting a digital (usually binary) code to an analog signal. |
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| Real-Time Clock - a battery powered clock that allows the computer to keep time. The RTC keeps track of the second, minute, hour, day, month and year. |
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| Joint Test Action Group - provides a standardized serial interface for controlling the Test Action Port (TAP) and associated test logic. |
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| Embedded Trace Macrocell - provides comprehensive debug and trace facilities for ARM processors. |
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