DS2174 datasheet(7/24 Pages) MAXIM

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DS2174

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Table 1-1. PIN ASSIGNMENT

NAME

I/O

DESCRIPTION

1, 23

VDD

—

Supply

RCLK

Receive Clock

RCLK_EN

Receive Clock Enable

RDAT0

Receive Serial Data or LSB of Receive Nibble or Byte Data

RDAT1

Receive Data Nibble or Byte

RDAT2

Receive Data Nibble or Byte

RDAT3

Receive Data Nibble or Byte

RDAT4

Receive Data Byte

RDAT5

Receive Data Byte

RDAT6

Receive Data Byte

RDAT7

Receive Data Byte

12, 22, 29,

GND

—

Ground

Address 0

Address 1

Address 2

Address 3

Chip Select

Read

Write

20, 21

TEST

Test Input

TCLK

Transmit Clock Input

TCLK_EN

Transmit Clock Enable

TCLKO

Transmit Clock Output. This is active only when data is being transmitted.

This clock has gapped periods corresponding to the times when the

transmit enable signal is low.

TDAT0

Transmit Serial Data or LSB of Transmit Nibble or Byte Data

TDAT1

Transmit Data Nibble or Byte

TDAT2

Transmit Data Nibble or Byte

TDAT3

Transmit Data Nibble or Byte

TDAT4

Transmit Data Byte

TDAT5

Transmit Data Byte

TDAT6

Transmit Data Byte

TDAT7

Transmit Data Byte

I/O

Data I/O

I/O

Data I/O

I/O

Data I/O

I/O

Data I/O

I/O

Data I/O

I/O

Data I/O

I/O

Data I/O

I/O

Data I/O

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