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TL16C550B

更新时间： 2024-11-21 22:42:11

品牌	Logo	应用领域
德州仪器 - TI		通信
页数	文件大小	规格书
35页	498K
描述
ASYNCHRONOUS COMMUNICATIONS ELEMENT

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TL16C550B 数据手册

TL16C550B, TL16C550BI

ASYNCHRONOUS COMMUNICATIONS ELEMENT

SLLS136B – JANUARY 1994 – REVISED AUGUST 1996

Capable of Running With All Existing

TL16C450 Software

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 562 Kbit/s)

After Reset, All Registers Are Identical to

the TL16C450 Register Set

In the FIFO Mode, Transmitter and Receiver

Are Each Buffered With 16-Byte FIFOs to

Reduce the Number of Interrupts to the

CPU

False-Start Bit Detection

Complete Status Reporting Capabilities

In the TL16C450 Mode, Hold and Shift

Registers Eliminate the Need for Precise

Synchronization Between the CPU and

Serial Data

3-State Outputs Provide TTL Drive

Capabilities for Bidirectional Data Bus and

Control Bus

Programmable Baud Rate Generator Allows

Division of Any Input Reference Clock by 1

to (2 –1) and Generates an Internal 16×

Line Break Generation and Detection

Internal Diagnostic Capabilities:

– Loopback Controls for Communications

Link Fault Isolation

Clock

Standard Asynchronous Communication

Bits (Start, Stop, and Parity) Added to or

Deleted From the Serial Data Stream

– Break, Parity, Overrun, Framing Error

Simulation

Fully Prioritized Interrupt System Controls

Independent Receiver Clock Input

Modem Control Functions (CTS, RTS, DSR,

DTR, RI, and DCD)

Transmit, Receive, Line Status, and Data

Set Interrupts Independently Controlled

Faster Plug-In Replacement for National

Semiconductor NS16550A

description

The TL16C550B and the TL16C550BI are functional upgrades of the TL16C450 asynchronous

†

communications element (ACE). Functionally identical to the TL16C450 on power up (character mode ), the

TL16C550B and TL16C550BI can be placed in an alternate mode (FIFO) to relieve the CPU of excessive

software overhead.

In this alternate FIFO mode, internal FIFOs are activated allowing 16 bytes (plus 3 bits of error data per byte

in the receiver FIFO) to be stored in both receive and transmit modes. To minimize system overhead and

maximize system efficiency, all logic is on the chip. Two of the TL16C450 terminal functions (RXRDY and

TXRDY) have been changed to allow signalling of DMA transfers.

The TL16C550B and the TL16C550BI perform serial-to-parallel conversions 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 operation. Reported status information includes: the type of

transfer operation in progress, the status of the operation, and any error conditions encountered.

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.

†The TL16C550B and the TL16C550BI can also be reset to the TL16C450 mode under software control.

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

12 3 4 5 6 7...35

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TL16C550B 替代型号

型号	品牌	替代类型	描述	数据表
TL16C550C	TI	功能相似	ASYNCHRONOUS COMMUNICATIONS ELEMENT WITH AUTOFLOW CONTROL

与TL16C550B相关器件

型号	品牌	获取价格	描述	数据表
TL16C550BFN	TI	获取价格	ASYNCHRONOUS COMMUNICATIONS ELEMENT
TL16C550BFNR	TI	获取价格	Single UART with 16-Byte FIFOs 44-PLCC 0 to 70
TL16C550BI	TI	获取价格	ASYNCHRONOUS COMMUNICATIONS ELEMENT
TL16C550BIFN	TI	获取价格	ASYNCHRONOUS COMMUNICATIONS ELEMENT
TL16C550BIN	TI	获取价格	ASYNCHRONOUS COMMUNICATIONS ELEMENT
TL16C550BIPT	TI	获取价格	ASYNCHRONOUS COMMUNICATIONS ELEMENT
TL16C550BN	TI	获取价格	ASYNCHRONOUS COMMUNICATIONS ELEMENT
TL16C550BPT	TI	获取价格	ASYNCHRONOUS COMMUNICATIONS ELEMENT
TL16C550C	TI	获取价格	ASYNCHRONOUS COMMUNICATIONS ELEMENT WITH AUTOFLOW CONTROL
TL16C550C_12	TI	获取价格	ASYNCHRONOUS COMMUNICATIONS ELEMENT WITH AUTOFLOW CONTROL

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