PC16550DV
UART 接口集成电路 Universal Async Receiver/Transmitter
UART IC 1，UART 通道 16 字节 44-PLCC（16.58x16.58）
立创商城:
PC16550DV
得捷:
IC UART WITH FIFO 44-PLCC
贸泽:
UART 接口集成电路 Universal Async Receiver/Transmitter
艾睿:
UART 1-CH 16byte FIFO 5V 44-Pin PLCC Tube
安富利:
The PC16550D device is an improved version of the original 16450 Universal Asynchronous Receiver/Transmitter UART. Functionally identical to the 16450 on powerup CHARACTER mode: can also be reset to 16450 Mode under software control the PC16550D can be put into an alternate mode FIFO mode to relieve the CPU of excessive software overhead.In this mode internal FIFOs are activated allowing 16 bytes plus 3 bits of error data per byte in the RCVR FIFO to be stored in both receive and transmit modes. All the logic is on chip to minimize system overhead and maximize system efficiency. Two pin functions have been changed to allow signalling of DMA transfers.The UART performs serial-to-parallel conversion on data characters received from a peripheral device or a MODEM, and parallel-to-serial conversion on data characters received from the CPU. The CPU can read the complete status of the UART at any time during the functional operation. Status information reported includes the type and condition of the transfer operations being performed by the UART, as well as any error conditions parity, overrun, framing, or break interrupt.The UART includes a programmable baud rate generator that is capable of dividing the timing reference clock input by divisors of 1 to 216–1, and producing a 16 × clock for driving the internal transmitter logic. Provisions are also included to use this 16 × clock to drive the receiver logic. The UART has complete MODEM-control capability, and a processor-interrupt system. Interrupts can be programmed to the user’s requirements, minimizing the computing required to handle the communications link.The UART is fabricated using Texas Instruments advanced M2CMOS process.
Verical:
UART 1-CH 16byte FIFO 5V 44-Pin PLCC Tube
Win Source:
IC UART WITH FIFO 44-PLCC
