Table of Contents

1 Features............................................................................1

2 Applications..................................................................... 1

3 Description.......................................................................1

4 Revision History.............................................................. 2

5 Pin Configuration and Functions...................................3

6 Specifications.................................................................. 4

6.1 Absolute Maximum Ratings ....................................... 4

6.2 ESD Ratings .............................................................. 4

6.3 Recommended Operating Conditions ........................4

6.4 Thermal Information ...................................................4

6.5 Electrical Characteristics ............................................4

6.6 UART Interface Timing ...............................................6

6.7 Timing Diagrams.........................................................6

6.8 Typical Characteristics................................................ 7

7 Detailed Description........................................................8

7.1 Overview..................................................................... 8

7.2 Functional Block Diagram........................................... 8

7.3 Feature Description.....................................................9

7.4 Device Functional Modes..........................................10

7.5 SMAART Wire™ / UART Interface............................ 13

7.6 Register Maps...........................................................19

8 Application and Implementation.................................. 23

8.1 Application Information............................................. 23

8.2 Typical Application.................................................... 23

9 Power Supply Recommendations................................24

10 Layout...........................................................................25

10.1 Layout Guidelines................................................... 25

10.2 Layout Example...................................................... 25

11 Device and Documentation Support..........................26

11.1 Device Support........................................................26

11.2 Receiving Notification of Documentation Updates.. 26

11.3 Support Resources................................................. 26

11.4 Trademarks............................................................. 26

11.5 Electrostatic Discharge Caution.............................. 26

11.6 Glossary.................................................................. 26

12 Mechanical, Packaging, and Orderable

Information.................................................................... 26

4 Revision History

NOTE: Page numbers for previous revisions may differ from page numbers in the current version.

Changes from Revision * (October 2018) to Revision A (February 2021)

Page

• Changed data sheet status from Production Data to Production Mixed............................................................. 1

• Updated the numbering format for tables, figures, and cross-references throughout the document..................1

• Added Advanced Information YMT package...................................................................................................... 3

• Updated absolute max supply voltage from 3.6V to 4.0V...................................................................................4

• Updated TX pin absolute max from (V+) + 0.3 V to (V+) + 0.3 and ≤ 4 V.......................................................... 4

• Added digital temperature output section for result readout with different ETM mode setting........................... 9

• Updated the communication protocol description.............................................................................................13

• Added command byte value table.................................................................................................................... 13

• Added command flow for global software reset................................................................................................14

• Added command flow for global initialization and address assignment............................................................14

• Added command flow for global clear interrupt................................................................................................ 16

• Added command flow for global read and write................................................................................................16

• Added command flow for individual read and write.......................................................................................... 17

• Updated Register Map as per new format........................................................................................................ 19

• Updated temperature result register as a 16-bit value to map to the communication protocol.........................20

• Updated configuration register as a 16-bit value to map to the communication protocol................................. 20

• Updated temperature low limit register as a 16-bit value to map to the communication protocol.....................21

• Updated temperature high limit register as a 16-bit value to map to the communication protocol................... 22

TMP144

SBOS891A – OCTOBER 2018 – REVISED FEBRUARY 2021

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