AS7221-BLGT ams

Datasheet DS000479 AS7221 CCT Tuning Smart Lighting Manager v4-00 2019-Jun-28 Document Feedback AS7221 Content Guide Content Guide 1 General Description ....................... 3 9 UART Command Interface .......... 28 1.1 Key Benefits & Features .............................. 3 9.2 UART Protocol ........................................... 29 1.2 Applications .................................................. 4 9.3 SPI Timing Characteristics ......................... 29 1.3 Block Diagram .............................................. 5 9.4 SPI Timing Diagrams ................................. 30 9.5 Serial Flash ................................................ 31 2 Ordering Information ..................... 6 10 Smart Lighting Command 3 Pin Assignment ............................. 7 Interface ....................................... 32 3.1 Pin Diagram .................................................. 7 10.1 AT Commands ........................................... 33 3.2 Pin Description ............................................. 8 11 Application Information .............. 43 4 Absolute Maximum Ratings .......... 9 11.1 Schematic .................................................. 43 5 Electrical Characteristics ............ 10 11.2 PCB Layout ................................................ 46 11.3 PCB Pad Layout......................................... 47 6 Optical Characteristics ................ 12 12 Package Drawings & Markings ... 48 7 Functional Description ................ 15 13 Tape & Reel Information ............. 50 7.1 Smart Lighting Manager Overview .......... 15 7.2 XYZ Chromatic White Color Sensor .......... 18 14 Soldering & Storage Information 51 7.3 Inputs .......................................................... 18 14.1 Manufacturing Process Considerations ..... 52 7.4 Synchronization and Reset ........................ 20 14.2 Storage Information ................................... 52 7.5 PWM Outputs ............................................. 21 14.3 Rebaking Instructions ................................ 53 7.6 Indicator LED .............................................. 22 15 Revision Information ................... 54 8 IC Master Interface ..................... 23 8.1 IC Protocol ................................................ 23 16 Legal Information ........................ 55 8.2 IC Write Access......................................... 24 8.3 IC Read Access ........................................ 24 8.4 Timing Characteristics ................................ 26 8.5 Timing Diagrams ........................................ 27 Datasheet PUBLIC DS000479 v4-00 2019-Jun-28 55 2