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TL16C450FN Datasheet Preview

TL16C450FN Datasheet

ACE

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TL16C450
ASYNCHRONOUS COMMUNICATIONS ELEMENT
SLLS037C − MARCH 1988 − REVISED JANUARY 2006
D Programmable Baud Rate Generator Allows
Division of Any Input Reference Clock by 1
to (216 −1) and Generates an Internal 16 ×
Clock
N PACKAGE
(TOP VIEW)
D0 1
D1 2
40 VCC
39 RI
D Full Double Buffering Eliminates the Need
for Precise Synchronization
D Standard Asynchronous Communication
D2 3
D3 4
D4 5
D5 6
38 DCD
37 DSR
36 CTS
35 MR
Bits (Start, Stop, and Parity) Added or
Deleted to or From the Serial Data Stream
D6 7
D7 8
34 OUT1
33 DTR
D Independent Receiver Clock Input
D Transmit, Receive, Line Status, and Data
RCLK 9
SIN 10
SOUT 11
32 RTS
31 OUT2
30 INTRPT
Set Interrupts Independently Controlled
CS0 12 29 NC
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
CS1 13
CS2 14
BAUDOUT 15
XTAL1 16
XTAL2 17
DOSTR 18
DOSTR 19
VSS 20
28 A0
27 A1
26 A2
25 ADS
24 CSOUT
23 DDIS
22 DISTR
21 DISTR
NOTE: 40-pin DIP (N package) will be obsoleted as of 7/30/2006. Please
contact your local distributor or TI Sales Office for more information.
D 3-State TTL Drive Capabilities for
Bidirectional Data Bus and Control Bus
FN PACKAGE
(TOP VIEW)
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
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
Please be aware that an important notice concerningNaCv−ailNaobiilnittye,rnsatal ncdoannrdecwtiaonrranty, 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.
Copyright 1988 − 2006, Texas Instruments Incorporated
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
1




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TL16C450FN Datasheet Preview

TL16C450FN Datasheet

ACE

No Preview Available !

TL16C450
ASYNCHRONOUS COMMUNICATIONS ELEMENT
SLLS037C − MARCH 1988 − REVISED JANUARY 2006
description
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.
The TL16C450 performs serial-to-parallel conversion on data received from a peripheral device or modem and
parallel-to-serial conversion on data received from its CPU. The CPU can read and report on the status of the
ACE at any point in the ACE’s operation. Reported status information includes the type of transfer operation
in progress, the status of the operation, and any error conditions encountered.
The TL16C450 ACE includes a programmable, on-board, baud rate generator. This generator is capable of
dividing a reference clock input by divisors from 1 to (216 −1) and producing a 16× clock for driving the internal
transmitter logic. Provisions are included to use this 16 × clock to drive the receiver logic. Also included in the
ACE is a complete modem control capability and a processor interrupt system that may be software tailored
to the user’s requirements to minimize the computing required to handle the communications link.
2
POST OFFICE BOX 655303 DALLAS, TEXAS 75265


Part Number TL16C450FN
Description ACE
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