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AD7877ACPZ-REEL 数据表(PDF) 3 Page - Analog Devices |
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AD7877ACPZ-REEL 数据表(HTML) 3 Page - Analog Devices |
3 / 46 page AD7877 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Timing Specifications .................................................................. 5 Timing Diagrams.......................................................................... 5 Absolute Maximum Ratings............................................................ 6 ESD Caution.................................................................................. 6 Pin Configurations and Function Descriptions ........................... 7 Typical Performance Characteristics ............................................. 9 Terminology .................................................................................... 13 Circuit Information........................................................................ 14 Touch Screen Principles ............................................................ 14 Measuring Touch Screen Inputs............................................... 15 Touch-Pressure Measurement .................................................. 16 STOPACQ Pin ............................................................................ 16 Temperature Measurement ....................................................... 17 Battery Measurement................................................................. 18 Auxiliary Inputs.......................................................................... 19 Limit Comparison ...................................................................... 19 Control Registers............................................................................ 20 Control Register 1 ...................................................................... 20 Control Register 2 ...................................................................... 21 Sequencer Registers ................................................................... 22 Interrupts..................................................................................... 24 Synchronizing the AD7877 to the Host CPU......................... 25 8-Bit DAC ........................................................................................ 26 Serial Interface ................................................................................ 28 Writing Data ............................................................................... 28 Write Timing............................................................................... 29 Reading Data............................................................................... 29 VDRIVE Pin..................................................................................... 29 General-Purpose I/O Pins............................................................. 30 GPIO Configuration .................................................................. 30 Grounding and Layout .................................................................. 32 PCB Design Guidelines for Chip Scale Packages................... 32 Register Maps.................................................................................. 33 Detailed Register Descriptions ..................................................... 35 GPIO Registers ........................................................................... 42 Outline Dimensions....................................................................... 44 Ordering Guide .......................................................................... 45 Automotive Products................................................................. 45 REVISION HISTORY 12/14—Rev. D to Rev. E Added Figure 50; Renumbered Sequentially .............................. 44 Updated Outline Dimensions....................................................... 44 Changes to Ordering Guide .......................................................... 45 12/11—Rev. C to Rev. D Change to Features Section ............................................................. 1 Updated Outline Dimensions....................................................... 44 Changes to Ordering Guide .......................................................... 44 Added Automotive Products Section........................................... 44 9/09—Rev. B to Rev. C Changes to Offset Error and Gain Error Parameters .................. 3 Added VBAT to GND Parameter ...................................................... 6 Changes to Pin 23 Description ....................................................... 7 Changes to Power Management (Control Register 2, Bits[7:6]) Section ............................................................................ 22 Changes to Bit 7 Description (Table 17)...................................... 36 Updated Outline Dimensions....................................................... 44 Changes Ordering Guide............................................................... 44 6/06—Rev. A to Rev. B Added Wafer Level Chip Scale Package ..........................Universal Changes to Table 3.............................................................................6 Changes to Figure 21...................................................................... 11 Change to Figure 25 ....................................................................... 12 Changes to Figure 38 and Figure 39 ............................................ 23 Change to Figure 40 ....................................................................... 24 Changes to Data Available Output (DAV) Section.................... 24 Updated Outline Dimensions....................................................... 42 Changes to Ordering Guide.......................................................... 42 11/04—Rev. 0 to Rev. A Changes to Absolute Maximum Ratings .......................................6 Changes to Figure 4...........................................................................7 Changes to Table 4.............................................................................7 Changes to Grounding and Layout section ................................ 32 Changes to Figure 42...................................................................... 32 Changes to Ordering Guide.......................................................... 43 7/04—Revision 0: Initial Version Rev. E | Page 2 of 45 |
类似零件编号 - AD7877ACPZ-REEL |
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类似说明 - AD7877ACPZ-REEL |
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