Datasheet > TL16C554AFNRG4

TL16C554AFNRG4

更新时间： 2024-11-22 12:27:39

品牌	Logo	应用领域
德州仪器 - TI		通信
页数	文件大小	规格书
46页	1074K
描述
ASYNCHRONOUS-COMMUNICATIONS ELEMENT

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TL16C554AFNRG4 数据手册

TL16C554A, TL16C554AI

ASYNCHRONOUS-COMMUNICATIONS ELEMENT

ꢀ

ꢀꢀ

SLLS509E − AUGUST 2001 − REVISED JUNE 2010

Integrated Asynchronous-Communications

Element

Fully Programmable Serial Interface

Characteristics:

− 5-, 6-, 7-, or 8-Bit Characters

− Even-, Odd-, or No-Parity Bit

− 1-, 1 1/2-, or 2-Stop Bit Generation

− Baud Generation (DC to 1-Mbit Per

Second)

Consists of Four Improved TL16C550C

ACEs Plus Steering Logic

In FIFO Mode, Each ACE Transmitter and

Receiver Is Buffered With 16-Byte FIFO to

Reduce the Number of Interrupts to CPU

False Start Bit Detection

In TL16C450 Mode, Hold and Shift

Registers Eliminate Need for Precise

Synchronization Between the CPU and

Serial Data

Complete Status Reporting Capabilities

Line Break Generation and Detection

Internal Diagnostic Capabilities:

− Loopback Controls for Communications

Link Fault Isolation

− Break, Parity, Overrun, Framing Error

Simulation

Up to 16-MHz Clock Rate for up to 1-Mbaud

Operation with V = 3.3 V and 5 V

Programmable Baud-Rate Generators

Which Allow Division of Any Input

Reference Clock by 1 to (2 ꢀ−ꢀ1) and

Fully Prioritized Interrupt System Controls

Generate an Internal 16 × Clock

Modem Control Functions (CTS, RTS, DSR,

DTR, RI, and DCD)

Adds or Deletes Standard Asynchronous

Communication Bits (Start, Stop, and

Parity) to or From the Serial-Data Stream

3-State Outputs Provide TTL Drive

Capabilities for Bidirectional Data Bus and

Control Bus

Independently Controlled Transmit,

Receive, Line Status, and Data Set

Interrupts

Programmable Auto-RTS and Auto-CTS

CTS Controls Transmitter in Auto-CTS

Mode,

5-V and 3.3-V Operation

RCV FIFO Contents and Threshold Control

RTS in Auto-RTS Mode,

description

The TL16C554A is an enhanced quadruple version of the TL16C550C asynchronous-communications element

(ACE). Each channel performs serial-to-parallel conversion on data characters received from peripheral

devices or modems and parallel-to-serial conversion on data characters transmitted by the CPU. The complete

status of each channel of the quadruple ACE can be read by the CPU at any time during operation. The

information obtained includes the type and condition of the operation performed and any error conditions

encountered.

The TL16C554A quadruple ACE can be placed in an alternate FIFO mode, which activates the internal FIFOs

to allow 16 bytes (plus three bits of error data per byte in the receiver FIFO) to be stored in both receive and

transmit modes. In the FIFO mode of operation, there is a selectable autoflow control feature that can

significantly reduce software overhead and increase system efficiency by automatically controlling serial-data

flow using RTS output and CTS input signals. All logic is on the chip to minimize system overhead and maximize

system efficiency. Two terminal functions allow signaling of direct-memory access (DMA) transfers. Each ACE

includes a programmable baud-rate generator that can divide the timing reference clock input by a divisor

between 1 and 2 −1.

The TL16C554A is available in a 68-pin plastic-leaded chip-carrier (PLCC) FN package, 64-pin plastic quad

flatpack (PQFP) PM package and in an 80-pin (TQFP) PN package.

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

12 3 4 5 6 7...46

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TL16C554AFNRG4 替代型号

型号	品牌	替代类型	描述	数据表
TL16C554AFN	TI	完全替代	ASYNCHRONOUS-COMMUNICATIONS ELEMENT
TL16C554IFN	TI	类似代替	ASYNCHRONOUS COMMUNICATIONS ELEMENT

与TL16C554AFNRG4相关器件

型号	品牌	获取价格	描述	数据表
TL16C554AI	TI	获取价格	ASYNCHRONOUS-COMMUNICATIONS ELEMENT
TL16C554AIFN	TI	获取价格	ASYNCHRONOUS-COMMUNICATIONS ELEMENT
TL16C554AIFNR	TI	获取价格	ASYNCHRONOUS-COMMUNICATIONS ELEMENT
TL16C554AIPN	TI	获取价格	ASYNCHRONOUS-COMMUNICATIONS ELEMENT
TL16C554AIPNG4	TI	获取价格	ASYNCHRONOUS-COMMUNICATIONS ELEMENT
TL16C554AIPNR	TI	获取价格	ASYNCHRONOUS-COMMUNICATIONS ELEMENT
TL16C554AIPNRG4	TI	获取价格	ASYNCHRONOUS-COMMUNICATIONS ELEMENT
TL16C554APN	TI	获取价格	ASYNCHRONOUS-COMMUNICATIONS ELEMENT
TL16C554APNG4	TI	获取价格	ASYNCHRONOUS-COMMUNICATIONS ELEMENT
TL16C554APNR	TI	获取价格	ASYNCHRONOUS-COMMUNICATIONS ELEMENT

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