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A universal synchronous and asynchronous receiver-transmitter (USART, programmable communications interface or PCI) [1] is a type of a serial interface device that can be programmed to communicate asynchronously or synchronously. See universal asynchronous receiver-transmitter (UART) for a discussion of the asynchronous capabilities of these ...
The STM32 is a family of microcontroller ICs based on various 32-bit RISC ARM Cortex-M cores. [1] STMicroelectronics licenses the ARM Processor IP from ARM Holdings . The ARM core designs have numerous configurable options, and ST chooses the individual configuration to use for each design.
This chip can provide signals that are needed to allow a DMA controller to perform DMA transfers to and from the UART if the DMA mode this UART introduces is enabled. [15] It was introduced by National Semiconductor, which has been sold to Texas Instruments. National Semiconductor claimed that this UART could run at up to 1.5 Mbit/s. 16C552 16750
The 16550 UART (universal asynchronous receiver-transmitter) is an integrated circuit designed for implementing the interface for serial communications. The corrected -A version was released in 1987 by National Semiconductor . [ 1 ]
The ARM Cortex-M family are ARM microprocessor cores that are designed for use in microcontrollers, ASICs, ASSPs, FPGAs, and SoCs.Cortex-M cores are commonly used as dedicated microcontroller chips, but also are "hidden" inside of SoC chips as power management controllers, I/O controllers, system controllers, touch screen controllers, smart battery controllers, and sensor controllers.
A hardware abstraction layer (HAL) is an abstraction layer, implemented in software, between the physical hardware of a computer and the software that runs on that computer. . Its function is to hide differences in hardware from most of the operating system kernel, so that most of the kernel-mode code does not need to be changed to run on systems with different hardwa
HAL (Hardware Abstraction Layer or rather Hardware Annotation Library) is a software subsystem for UNIX-like operating systems providing hardware abstraction. HAL is now deprecated on most Linux distributions and on FreeBSD. Functionality is being merged into udev on Linux as of 2008–2010 and devd on FreeBSD.
Due to their lagging performance (1.6 MB/s maximum 8-bit transfer capability at 5 MHz, [4] but no more than 0.9 MB/s in the PC/XT and 1.6 MB/s for 16-bit transfers in the AT due to ISA bus overheads and other interference such as memory refresh interruptions [1]) and unavailability of any speed grades that would allow installation of direct ...