BeagleBone LCD7 Cape Reference Manual Download Page 1

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BeagleBone LCD7 Cape

System Reference Manual

Revision A3

Page 1 of 27

BeagleBone LCD7 Cape Rev A3

System Reference Manual

Revision A3

September 1st, 2012

Summary of Contents for LCD7 Cape

Page 1: ...BeagleBone LCD7 Cape System Reference Manual Revision A3 Page 1 of 27 BeagleBone LCD7 Cape Rev A3 System Reference Manual Revision A3 September 1st 2012...

Page 2: ...license results one license_code by sa For any questions concerns or issues submit them to support beagleboardtoys com BEAGLEBONE LCD7 CAPE DESIGN These design materials referred to in this document a...

Page 3: ...CULAR PURPOSE THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE DESIGN MATERIALS IS WITH YOU SHOULD THE DESIGN MATERIALS PROVE DEFECTIVE YOU ASSUME THE COST OF ALL NECESSARY SERVICING REPAIR OR...

Page 4: ...STATUTORY INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE The user assumes all responsibility and liability for proper and safe handling of the goods Further the user...

Page 5: ...roblems occurring as a result of improper use modifications exposure to water excessive voltages abuse or accidents All boards will be returned via standard mail if an issue is found If no issue is fo...

Page 6: ...CATIONS 15 4 2 LCD PANEL 16 4 3 INDICATORS 17 4 4 EXPANSION HEADER 17 4 5 BUTTONS 17 4 6 DC POWER CONNECTOR 17 4 7 MECHANICAL SPECIFICATIONS 18 4 8 ELECTRICAL SPECIFICATIONS 18 5 0 SYSTEM ARCHITECTURE...

Page 7: ...bottom side 16 Figure 5 BeagleBone LCD7 Cape High Level Block Diagram 19 Figure 5 LCD Signals at expansion connector J1 20 Figure 6 LCD Signals buffered through U1 21 Figure 7 BeagleBone LCD7 Power Ma...

Page 8: ...BeagleBone LCD7 Cape System Reference Manual Revision A3 Page 8 of 27 NOTES...

Page 9: ...ons in this document are Section 2 0 Change History Provides tracking for the changes made to the System Reference Manual Section 3 0 Overview This is a high level overview of the BeagleBone LCD7 Cape...

Page 10: ...been moved from GPIO3_19 to GPIO0_3 and LCD_DVDD_EN has moved from GPIO1_31 to GPIO0_2 These changes in GPIOs are to support awake interrupt in sleeping mode The PCB revision is also changed from BB B...

Page 11: ...ed to the topside of the board can display up to a resolution of 800x480 and is a 4 wire resistive touchscreen The board is equipped with seven buttons located at finger friendly positions These butto...

Page 12: ...Reference Manual Revision A3 Page 12 of 27 3 2 In The Box The final packaged BeagleBone LCD7 Cape Rev A2 product will contain the following items 1 BeagleBone LCD7 Cape with standoffs Figure 2 Beagle...

Page 13: ...o Calibration utility 5 Follow the instructions given by the Auto Calibration utility to calibrate the LCD7 touchscreen Note The Auto Calibration utility is automatically displayed when the card is us...

Page 14: ...CD7 Cape s features Table 2 BeagleBone LCD7 Cape Features Feature Display ThreeFive TFC S9700RTWV35TR 01 LCD Size 7 Panel Type a Si TFT active matrix Resolution 800 x 480 Colors 16 7M Interface RGB 16...

Page 15: ...System Reference Manual Revision A3 Page 15 of 27 4 1 Key Component Locations Figure 3 below shows the top side locations of key components on the PCB layout of the BeagleBone LCD7 Cape Figure 3 Key C...

Page 16: ...e 4 Key Components on bottom side 4 2 LCD Panel The LCD Panel is supplied by ThreeFive The Model number is TFC S9700RTWV35TR 01 This display uses amorphous silicon a Si as a switching device This mode...

Page 17: ...set button when pressed will reset the board The power button when pressed and held for 10 seconds will turn off the board In addition to those two buttons the BeagleBone LCD7 also features five diffe...

Page 18: ...ness 062 RoHS Compliant Yes Weight TBW 4 8 Electrical Specifications Table 3 is the electrical specification of the external interfaces to the BeagleBone LCD7 panel Table 3 BeagleBone LCD7 Electrical...

Page 19: ...N E C O N N J2 B E A G L E B O N E C O N N J5 E X P C O N N E C T O R J6 E X P C O N N E C T O R U1 32 BIT TRANSCEIVER 74AVC32T245 P2 L C D C O N N E C T O R 16 LCD_DATA 0 15 4 LCD_CONTROL 16 LCD_DAT...

Page 20: ...PCLK Figure 5 shows these LCD signals at expansion connector J1 Figure 5 LCD Signals at expansion connector J1 5 2 2 Non Inverting Bus Transceiver The LCD signals are buffered through U1 74AVC32T245 w...

Page 21: ...shows the LCD signals are buffered through U1 Figure 6 LCD Signals buffered through U1 5 2 3 Touchscreen Interface The TFC S9700RTWV35TR 01 touchscreen is resistive and composed of 4 different X or Y...

Page 22: ...e LCD backplane as well as a linear regulator controller to provide a 3 3V output for system powered by 5V only The enable EN input of the device is controlled by signal LCD_AVDD_EN which is exposed a...

Page 23: ...output is fixed at 3 3V This voltage is connected to power rail VDD_LCD and also powers the Power LED The main boost converter of TPS65105 as well as positive and negative charge pumps linear regulat...

Page 24: ...BeagleBone LCD7 Backlight Circuit 5 4 EEPROM The BeagleBone LCD7 Cape has an EEPROM containing information that will allow the SW to identify the board and to configure the expansion headers pins as...

Page 25: ...Address line A2 is always tied high This sets the allowable address range for the expansion cards to 0x54 to 0x57 All other I2C addresses can be used by the user in the design of their Capes But thes...

Page 26: ...Revision A3 Page 26 of 27 6 0 Mechanical Information This section provides information on the mechanical aspect of the BeagleBone LCD7 Cape Figure 14 is the dimensions of the BeagleBone LCD7 Cape Figu...

Page 27: ...d via resources at BeagleBoard org discuss THERE IS NO WARRANTY FOR THE DESIGN MATERIALS TO THE EXTENT PERMITTED BY APPLICABLE LAW EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND OR...

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