Datasheet

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V 1.0

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page 2 of 22

2022-01-17

Datasheet of XENSIV™ PASCO2

Table of contents

Description .................................................................................................................................... 1

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

Potential applications..................................................................................................................... 1

Table of contents............................................................................................................................ 2

1

Block diagram........................................................................................................................ 3

2

Pin-out diagram..................................................................................................................... 4

3

The typical sensor response to the CO2 concentration change ..................................................... 5

4

Characteristics and parameters ............................................................................................... 6

4.1

Specification............................................................................................................................................6

4.1.1

Operating range .................................................................................................................................6

4.1.2

Timing characteristics........................................................................................................................6

4.1.3

Absolute maximum ratings................................................................................................................8

4.1.4

The current rating and power consumption.....................................................................................8

4.1.5

CO2 Transfer Function .......................................................................................................................9

4.1.6

Peripheral timing .............................................................................................................................10

4.1.6.1

I2C Timing....................................................................................................................................10

4.1.6.2

UART characteristics...................................................................................................................11

4.2

Application Circuit Example..................................................................................................................11

4.3

Functional description ..........................................................................................................................12

4.3.1

Operating Modes..............................................................................................................................12

4.3.2

Data post-processing .......................................................................................................................13

4.3.3

Alarm Threshold...............................................................................................................................14

4.4

Advanced functionality .........................................................................................................................14

4.5

Digital interface .....................................................................................................................................15

4.5.1

I2C interface .....................................................................................................................................15

4.5.2

I2C transaction format .....................................................................................................................15

4.5.3

UART Interface..................................................................................................................................16

4.6

Register map..........................................................................................................................................16

5

Assembly instruction .............................................................................................................17

6

Package information .............................................................................................................18

7

Footprint and stencil recommendation....................................................................................19

8

Packing for shipment.............................................................................................................20

9

Revision history ....................................................................................................................21