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AS8228BLQS Datasheet(PDF) 8 Page - ams AG |
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AS8228BLQS Datasheet(HTML) 8 Page - ams AG |
8 / 123 page Data Sheet AS8218 / AS8228 Revision 3.0, 31-May-06 Page 8 of 123 Table of Contents 1. Key Features .........................................................................................................................................1 2. General Description ...............................................................................................................................1 3. Typical Application Circuit ......................................................................................................................3 4. Pin Out..................................................................................................................................................4 5. Pin Description ......................................................................................................................................4 6. Electrical Characteristics........................................................................................................................9 6.1 Absolute Maximum Ratings (Non-Operating) ......................................................................................9 6.2 Operating Conditions ........................................................................................................................9 6.3 DC/AC Characteristics for Digital Inputs and Outputs........................................................................ 10 6.4 Electrical System Specification ........................................................................................................ 11 7. Performance Graphs ............................................................................................................................ 12 8. Detailed Functional Description ............................................................................................................ 14 8.1 Energy Measurement Front End (Including DSP) .............................................................................. 16 8.2 LCD Driver (LCDD) ......................................................................................................................... 48 8.3 Programmable Multi-Purpose I/Os (MPIO) ........................................................................................ 54 8.4 Serial Peripheral Interface (SPI) ...................................................................................................... 64 8.5 External EEPROM Requirements ..................................................................................................... 70 8.6 8051 Microcontroller (MCU) ............................................................................................................. 77 8.7 System Control (SCT) ..................................................................................................................... 98 8.8 Serial Interface – UART1............................................................................................................... 105 9. Circuit Diagram.................................................................................................................................. 114 10. Parts List........................................................................................................................................... 115 11. Packaging ......................................................................................................................................... 117 12. Product Ordering Guide ..................................................................................................................... 117 13. Collection of Formulae ....................................................................................................................... 118 14. Terminology ...................................................................................................................................... 121 15. Revision ............................................................................................................................................ 122 16. Copyright .......................................................................................................................................... 122 17. Disclaimer ......................................................................................................................................... 122 18. Contact ............................................................................................................................................. 123 |
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