SC28L92 3.3V/5.0V Dual Universal Asynchronous Receiver/Transmitter (DUART)

PublishTime：2022-07-22

●The SC28L92 is a pin and function replacement for the SCC2692 and SC26C92 operating at 3.3 V or 5 V supply with added features and deeper FIFOs. Its configuration on power-up is that of the SC26C92. Its differences from the SCC2692 and SC26C92 are: 16 character receiver, 16 character transmit FIFOs, watchdog timer for each receiver, mode register 0 is added, extended baud rate and overall faster speeds, programmable receiver and transmitter interrupts. (Neither the SC26C92 nor the SCC2692 is being discontinued.)
●Pin programming will allow the device to operate with either the Motorola or Intel bus interface.The bit 3 of the MR0A register allows the device to operate in an 8 byte FIFO mode if strict compliance with the SC26C92 FIFO structure is required.
●The NXP Semiconductors SC28L92 Dual Universal Asynchronous Receiver/Transmitter (DUART) is a single-chip CMOS-LSI communications device that provides two full-duplex asynchronous receiver/transmitter channels in a single package. It interfaces directly with microprocessors and may be used in a polled or interrupt driven system with modem and DMA interface.
●The operating mode and data format of each channel can be programmed independently.Additionally, each receiver and transmitter can select its operating speed as one of 28 fixed baud rates; a 16x clock derived from a programmable counter/timer, or an external 1x or 16x clock. The baud rate generator and counter/timer can operate directly from a crystal or from external clock inputs. The ability to independently program the operating speed of the receiver and transmitter make the DUART particularly attractive for dual-speed channel applications such as clustered terminal systems.
●Each receiver and transmitter is buffered by 8 or 16 character FIFOs to minimize the potential of receiver overrun, transmitter underrun and to reduce interrupt overhead in interrupt driven systems. In addition, a flow control capability is provided via RTS/CTS signaling to disable a remote transmitter when the receiver buffer is full.
●Also provided on the SC28L92 are a multipurpose 7-bit input port and a multipurpose 8-bit output port. These can be used as general purpose I/O ports or can be assigned specific functions (such as clock inputs or status/interrupt outputs) under program control.
●The SC28L92 is available in three package versions: PLCC44, QFP44, and HVQFN48.

Brand of Product：	NXP
Part#：	SC28L92 More Part#
Product Category：	3.3V/5.0V Dual Universal Asynchronous Receiver/Transmitter (DUART) More
Application：	More
Data Type：	Solutions More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：	PLCC44;QFP44;HVQFN48
Language：	English Chinese Chinese and English Japanese
Date of Creation：	Apr 8, 2022
Version Number：
Data Encoding：
Data Size：	97 KB

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