XR16C854 Quad UART with RX/TX FIFO Counters and 128-Byte FIFO

The XR16C8541 (854) is a universal asynchronous receiver and transmitter (UART) with a dual foot print interface compatible with the ST16C554D/654 and ST68C554/654. The 854 is an enhanced UART with 128 byte FIFOs, Independent Transmit and Receive FIFO counter, automatic hardware/software flow control, and data rates up to 1.5Mbps. Onboard status registers provide the user with error indications and operational status, modem interface control. System interrupts may be tailored to meet user requirements. An internal loop-back capability allows onboard diagnostics. The 854 is available in 64 pin LQFP, 68 pin PLCC and 100 pin QFP packages. The 64 pin package offers the 16 interface mode which is compatible with the industry standard ST16C554. The 68 and 100 pin packages offer an additional 68 mode which allows easy integration with Motorola, and other popular microprocessors. The XR16C854CV (64 pin) offers three state interrupt control while the XR16C854DV provides constant active interrupt outputs. The 64 pin devices do not offer TXRDY/RXRDY outputs or the default clock select option (CLKSEL). The 100 pin packages offer faster channel status access by providing separate outputs for TXRDY and RXRDY, offer separate Infrared TX outputs and a musical instrument clock input (MIDICLK). The 854 combines the package interface modes of the 16C554/654 and 68C554/654 series on a single integrated chip.

技术特性

5 volt tolerant inputs
2.97 to 5.5 Volt Operation
Pin-to-pin compatible with the industry standard ST16C554 and ST16C654 and TI’s TL16C554N and TL16C754BFN
Intel or Motorola Data Bus Interface select
Four independent UART channels
Register Set Compatible to 16C550
Data rates of up to 2 Mbps
Transmit and Receive FIFOs of 128 bytes
Programmable TX and RX FIFO Trigger Levels
Transmit and Receive FIFO Level Counters
Automatic Hardware (RTS/CTS) Flow Control
Selectable Auto RTS Flow Control Hysteresis
Automatic Software (Xon/Xoff) Flow Control
Wireless Infrared (IrDA 1.0)Encoder/Decoder
Sleep Mode (200 uA typical)
Crystal oscillator or external clock input
Pb-Free, RoHS Compliant Versions Offered

应用领域 APPLICATION

Portable Appliances
Telecommunication Network Routers
Ethernet Network Routers
Cellular Data Devices
Factory Automation and Process Controls

技术指标

中央处理器接口	I2C/SPI
频道	2
数据传输速率@5/3.3/2.5V	1/1/na
Max Data Rate @ 5/3.3/2.5/1.8V (Mbps)	1/1/na/na
发送器/接收器FIFO(Bytes)	64/64
发送器/接收器FIFOCtrs	Yes
发送器/接收器FIFOINT Trig	Yes
自动RTS/CTS	Yes
电压供应	2.97-3.63
封装	QFN-64

功能框图 Functional Block Diagram

订购信息 Ordering Information

器件型号	有害物质限制	最低温度	最高温度	状态	立刻购买	申请样片
XR16C854CJ-F		0	70	Active
XR16C854CJTR-F		0	70	Active
XR16C854CQ-F		0	70	Active
XR16C854CQTR-F		0	70	Active
XR16C854CV-F		0	70	Active
XR16C854CVTR-F		0	70	Active
XR16C854IJ-F		-40	85	Active
XR16C854IJTR-F		-40	85	Active
XR16C854IQ-F		-40	85	Active
XR16C854IQTR-F		-40	85	Active
XR16C854IV-F		-40	85	Active
XR16C854IVTR-F		-40	85	Active

应用技术支持与电子电路设计开发资源下载	版本信息	大小
XR16C854 数据资料DataSheet下载:pdf	Rev.V2	2 页