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AS7221

Content Guide

Datasheet

• PUBLIC

DS000479

• v4-00 • 2019-Jun-28

│ 2

Content Guide

General Description....................... 3

1.1

Key Benefits & Features .............................. 3

1.2

Applications .................................................. 4

1.3

Block Diagram .............................................. 5

Ordering Information..................... 6

Pin Assignment ............................. 7

3.1

Pin Diagram.................................................. 7

3.2

Pin Description ............................................. 8

Absolute Maximum Ratings.......... 9

Electrical Characteristics ............ 10

Optical Characteristics................ 12

Functional Description ................ 15

7.1

Smart Lighting Manager

– Overview.......... 15

7.2

XYZ Chromatic White Color Sensor .......... 18

7.3

Inputs.......................................................... 18

7.4

Synchronization and Reset ........................ 20

7.5

PWM Outputs ............................................. 21

7.6

Indicator LED.............................................. 22

I²C Master Interface ..................... 23

8.1

I²C Protocol ................................................ 23

8.2

I²C Write Access......................................... 24

8.3

I²C Read Access ........................................ 24

8.4

Timing Characteristics................................ 26

8.5

Timing Diagrams ........................................ 27

UART Command Interface .......... 28

9.2

UART Protocol ........................................... 29

9.3

SPI Timing Characteristics......................... 29

9.4

SPI Timing Diagrams ................................. 30

9.5

Serial Flash ................................................ 31

Smart Lighting Command

Interface ....................................... 32

10.1

AT Commands ........................................... 33

Application Information .............. 43

11.1

Schematic .................................................. 43

11.2

PCB Layout ................................................ 46

11.3

PCB Pad Layout......................................... 47

Package Drawings & Markings... 48

Tape & Reel Information ............. 50

Soldering & Storage Information 51

14.1

Manufacturing Process Considerations ..... 52

14.2

Storage Information ................................... 52

14.3

Rebaking Instructions ................................ 53

Revision Information................... 54

Legal Information ........................ 55

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