ST16C580 Datasheet, PDF (1/41 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
September 2003
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 40 pin PDIP, 44 pin PLCC, and 48 pin TQFP packages. It is fabricated in an
advanced CMOS process to achieve low drain power and high speed requirements.
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.)
PLCC Package
D5 7
D6 8
D7 9
RCLK 10
RX 11
N.C. 12
TX 13
CS0 14
CS1 15
-CS2 16
-BAUDOUT 17
XR16C580CJ44
39 RESET
38 -OP1
37 -DTR
36 -RTS
35 -OP2
34 N.C.
33 INT
32 -RXRDY
31 A0
30 A1
29 A2
ORDERING INFORMATION
Part number
ST16C580CP40
ST16C580CJ44
ST16C580CQ48
ST16C580IP40
ST16C580IJ44
ST16C580IQ48
Package
40-Lead PDIP
44-Lead PLCC
48-Lead TQFP
40-Lead PDIP
44-Lead PLCC
48-Lead TQFP
Operating temp
0° C to + 70° C
0° C to + 70° C
0° C to + 70° C
-40° C to + 85° C
-40° C to + 85° C
-40° C to + 85° C
Device Status
Discontinued. See the ST16C580CQ48 for a replacement.
Discontinued. See the ST16C580CQ48 for a replacement.
Active
Discontinued. See the ST16C580IQ48 for a replacement.
Discontinued. See the ST16C580IQ48 for a replacement.
Active
*Note 1 Covered by U.S. Patent #5,649,122.
Rev. 1.20
EXAR Corporation, 48720 Kato Road, Fremont, CA 94538 • [phone] • FAX [phone]