TL16C552
DUAL ASYCHRONOUS COMMUNICATIONS ELEMENT
WITH FIFO
SLLS102B – DECEMBER 1990 – REVISED MARCH 1996
IBM PC/AT Compatible
Programmable Serial Interface
Characteristics for Each Channel:
– 5-, 6-, 7-, or 8-bit Characters
– Even-, Odd-, or No-Parity Bit Generation
and Detection
Two TL16C550 ACEs
Enhanced Bidirectional Printer Port
16-Byte FIFOs Reduce CPU Interrupts
– 1-, 1 1/2-, or 2-Stop Bit Generation
Independent Control of Transmit, Receive,
Line Status, and Data Set Interrupts on
Each Channel
3-State TTL Drive for the Data and Control
Bus on Each Channel
Hardware and Software Compatible With
TL16C452
Individual Modem Control Signals for Each
Channel
description
FN PACKAGE
(TOP VIEW)
9
8
7
6
5
4
3
2
1 68 67 66 65 64 63 62 61
60
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
SOUT1
DTR1
RTS1
CTS1
DB0
INT1
59
INT2
58
SLIN
57
INIT
56
AFD
55
DB1
STB
54
DB2
GND
53
DB3
PD0
52
DB4
PD1
51
DB5
PD2
50
DB6
PD3
49
DB7
PD4
48
TXRDY0
PD5
47
V
PD6
DD
46
RTS0
DTR0
PD7
45
INT0
44
SOUT0
BDO
27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43
description
The TL16C552 is an enhanced dual channel version of the popular TL16C550 asynchronous communications
element (ACE). The device serves two serial input/output interfaces simultaneously in microcomputer or
microprocessor-based systems. Each channel performs serial-to-parallel conversion on data characters
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
IBM PC/AT is a trademark of International Business Machines Corporation.
Copyright 1996, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265