ST16C654 UART with 32-Byte FIFOs and Infrared (IrDA) Encoder/Decoder

The ST16C6541 is a universal asynchronous receiver and transmitter (UART) with a dual foot print interface compatible with the ST16C554 and ST68C554. The 654 is an enhanced UART with 64 byte FIFO’s, 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 654 is available in 64-pin TQFP, 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 ST16C654CQ64 (64 pin) offers three state interrupt control while the ST16C654DCQ64 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 654 combines the package interface modes of the 16C454/ 554 and 68/C454/554 series on a single integrated chip.

技术特性

Pin to pin and functionally compatible to the Industry Standard 16550
1.5 Mbps transmit/receive operation (24MHz)
32 byte transmit FIFO
32 byte receive FIFO with error flags
Automatic hardware/software flow control
Programmable Xon/Xoff characters
Independent transmit and receive control
Software selectable Baud Rate Generator pre-scaleable clock rates of 1X or 4X
Four selectable transmit/receive FIFO interrupt trigger levels
Standard modem interface or Infrared IrDA encode/decoder interface
STD mode compatible with ST16C450/550
PC mode provides PC ISA bus COM and LPT port address decoding
Sleep mode ( 800mA stand-by )
Low operating current ( 1.3mA typ.)
Pb-Free, RoHS Compliant Versions Offered

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
ST16C654IQ64		-40	85	EOL
ST16C654CJ68-F		0	70	Active
ST16C654CJ68TR-F		0	70	Active
ST16C654CQ100-F		0	70	Active
ST16C654CQ100TR-F		0	70	Active
ST16C654CQ64-F		0	70	Active
ST16C654IJ68-F		-40	85	Active
ST16C654IJ68TR-F		-40	85	Active
ST16C654IQ100-F		-40	85	Active
ST16C654IQ100TR-F		-40	85	Active
ST16C654IQ64-F		-40	85	Active
ST16C654IQ64TR-F		-40	85

技术指标

中央处理器接口	Intel or PC COM Port
频道	1
数据传输速率@5/3.3/2.5V	3.125/2/na
Max Data Rate @ 5/3.3/2.5/1.8V (Mbps)	3.125/2/na/na
发送器/接收器FIFO(Bytes)	32/32
发送器/接收器FIFOCtrs	No
发送器/接收器FIFOINT Trig	4 Levels/ 4 Levels
自动RTS/CTS	Yes
IrDa供应	Yes
5VTol输入	Yes
电压供应	2.97-5.5
封装	PLCC-44, TQFP-48

功能框图 Functional Block Diagram

应用领域 APPLICATION

Battery Operated Electronics
Internet Appliances
Handheld Terminal
Personal Digital Assistants
Cellular Phones DataPort

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
ST16C654 数据资料DataSheet下载:pdf	Rev.V2	2 页