TL16C450 Datasheet, PDF (1/25 Pages) Texas Instruments – ASYNCHRONOUS COMMUNICATIONS ELEMENT

TL16C450
ASYNCHRONOUS COMMUNICATIONS ELEMENT
D Programmable Baud Rate Generator Allows
Division of Any Input Reference Clock by 1
to (2¹⁶ – 1) and Generates an Internal 16×
Clock
D Full Double Buffering Eliminates the Need
for Precise Synchronization
D Standard Asynchronous Communication
Bits (Start, Stop, and Parity) Added or
Deleted to or From the Serial Data Stream
D Independent Receiver Clock Input
D Transmit, Receive, Line Status, and Data
Set Interrupts Independently Controlled
D Fully Programmable Serial Interface
Characteristics:
– 5 -, 6 -, 7 -, or 8-Bit Characters
– Even -, Odd -, or No-Parity Bit Generation
and Detection
– 1 -, 1 1/2 -, or 2-Stop Bit Generation
– Baud Generation (dc to 256 Kbit/s)
D False Start Bit Detection
D Complete Status Reporting Capabilities
D 3-State TTL Drive Capabilities for
Bidirectional Data Bus and Control Bus
D Line Break Generation and Detection
D Internal Diagnostic Capabilities:
– Loopback Controls for Communications
Link Fault Isolation
– Break, Parity, Overrun, Framing Error
Simulation
D Fully Prioritized Interrupt System Controls
D Modem Control Functions (CTS, RTS, DSR,
DTR, RI, and DCD)
D Easily Interfaces to Most Popular
Microprocessors
D Faster Plug-In Replacement for National
Semiconductor NS16C450
SLLS037B – MARCH 1988 – REVISED MARCH 1996
N PACKAGE
(TOP VIEW)
D0 ₁
D1 ₂
D2 ₃
D3 ₄
D4 ₅
D5 ₆
D6 ₇
D7 ₈
RCLK ₉
SIN 10
SOUT 11
CS0 12
CS1 13
CS2 14
BAUDOUT 15
XTAL1 16
XTAL2 17
DOSTR 18
DOSTR 19
V_SS 20
40 ^V_CC
39 ^RI
38 DCD
37 DSR
36 CTS
35 MR
34 OUT1
33 DTR
32 RTS
31 OUT2
30 INTRPT
29 NC
28 A0
27 A1
26 A2
25 ADS
24 _CSOUT
23 _DDIS
22 _DISTR
21 _DISTR
FN PACKAGE
(TOP VIEW)
D5
D6
D7
RCLK
SIN
NC
SOUT
CS0
CS1
CS2
BAUDOUT
6 5 4 3 2 1 44 43 42 41 40
7
39
8
38
9
37
10
36
11
35
12
34
13
33
14
32
15
31
16
30
17
29
18 19 20 21 22 23 24 25 26 27 28
MR
OUT1
DTR
RTS
OUT2
NC
INTRPT
NC
A0
A1
A2
description
NC – No internal connection
The TL16C450 is a CMOS version of an asynchronous communications element (ACE). It typically functions
in a microcomputer system as a serial input/output interface.
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.
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.
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright © 1996, Texas Instruments Incorporated
1