ST16C580_05 Datasheet, PDF (1/39 Pages) Exar Corporation – UART WITH 16-BYTE FIFO’s AND INFRARED (IrDA) ENCODER/DECODER

ST16C580
UART WITH 16-BYTE FIFO’s AND
INFRARED (IrDA) ENCODER/DECODER
GENERAL DESCRIPTION
August 2005
The ST16C580¹ is a universal asynchronous receiver and transmitter (UART) and is pin compatible with the ST16C550
UART. The 580 is an enhanced UART with 16 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 is included and can be optionally configured to operate with the Infrared (IrDA) encoder/decoder. The
system interrupts may be tailored to meet user requirements. An internal loop-back capability allows onboard
diagnostics. The 580 is available in the 48 pin TQFP package. It is fabricated in an advanced CMOS process to achieve
low drain power and high speed requirements.
48 Pin TQFP Package
FEATURES
• Pin to pin and functionally compatible to the Industry
Standard 16550
• 2.97 to 5.5 volt operation
• 1.5 Mbps transmit/receive operation (24MHz)
• 16 byte transmit FIFO
• 16 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 trig-
ger levels
• Standard modem interface or Infrared IrDA encode/
decoder interface
• Sleep mode ( 200µA stand-by )
• Low operating current ( 1.2mA typ.)
N.C. 1
D5 2
D6 3
D7 4
RCLK 5
N.C. 6
RX 7
TX 8
CS0 9
CS1 10
-CS2 11
-BAUDOUT 12
XR16C580CQ48
36 N.C.
35 RESET
34 -OP1
33 -DTR
32 -RTS
31 -OP2
30 INT
29 -RXRDY
28 A0
27 A1
26 A2
25 N.C.
ORDERING INFORMATION
Part number
ST16C580CQ48
ST16C580IQ48
Package
Operating temp
48-Lead TQFP 0° C to + 70° C
48-Lead TQFP -40° C to + 85° C
*Note 1 Covered by U.S. Patent #5,649,122.
Device Status
Active
Active
Rev. 1.22
EXAR Corporation, 48720 Kato Road, Fremont, CA 94538 • [phone] • FAX [phone]