ST16C454 datasheet(8/29 Pages) EXAR

Part #	ST16C454

Description	QUAD UNIVERSAL ASYNCHRONOUS RECEIVER/TRANSMITTER (UART)

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Manufacturer	EXAR [Exar Corporation]

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ST16C454

8

Rev. 3.31

or receive operation.

RX A-B

7,29

RX C-D

41,63

I

Receive Data Input RX A-D. - These inputs are associated with

individual serial channel data to the ST16C454. The RX signal will

be a logic 1 during reset, idle (no data), or when the transmitter is

disabled. During the local loop-back mode, the RX input pin is

disabled and TX data is internally connected to the UART RX Input,

internally.

TX A-B

17,19

TX C-D

51,53

O

Transmit Data - These outputs are associated with individual serial

transmit channel data from the 454. The TX signal will be a logic

1 during reset, idle (no data), or when the transmitter is disabled.

During the local loop-back mode, the TX input pin is disabled and

TX data is internally connected to the UART RX Input.

Symbol

Signal

Pin Description

type

SYMBOL DESCRIPTION

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