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AS8228BLQS Datasheet(PDF) 8 Page - ams AG

Part # AS8228BLQS
Description  Highly Integrated Single Phase 2 Current Energy Metering Integrated Circuits
Download  123 Pages
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Manufacturer  AMSCO [ams AG]
Direct Link  http://www.ams.com
Logo AMSCO - ams AG

AS8228BLQS Datasheet(HTML) 8 Page - ams AG

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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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