UM10726 User manual for the PCA8538 evaluation board
Contents
1. applicable law even if any remedy fails of its essential purpose Translations A non English translated version of a document is for reference only The English version shall prevail in case of any discrepancy between the translated and English versions 6 3 Trademarks Notice All referenced brands product names service names and trademarks are property of their respective owners NXP B V 2013 All rights reserved User manual Rev 2 18 July 2013 8 of 10 NXP Semiconductors U M1 0726 User manual PCA8538 evaluation board 7 List of figures Fig 1 PCA8538 evaluation board eeeeeeeeeeeeee 4 Fig 2 PCA8538 evaluation board schematic 5 Fig 3 PCA8538 evaluation board layout 6 UM10726 All information provided in this document is subject to legal disclaimers NXP B V 2013 All rights reserved User manual Rev 2 18 July 2013 9 of 10 NXP Semiconductors U M1 0726 User manual PCA8538 evaluation board 8 Contents 1 Introduction 2 Board description and layOut cccsssseseeee 4 3 Board schematic and layout cscecseseeseseenes 4 3 1 Jumper settings eeeeeeeseeeeeesneeeeeeneetereneeeees 5 4 Software code example cesccseeeeeeeeeeeens 7 5 References ecssseeeseseeeeseeneee 6 Legal information 6 1 DeTINIT ONS eirese a onroerend oieri 6 2 Disclaimers 6 3 Trademarks 7 List Of figUreS ssusssseneesnnnne2. assistance with applications or customer product design It is customer s sole responsibility to determine whether the NXP Semiconductors product is suitable and fit for the customer s applications and products planned as well as for the planned UM10726 All information provided in this document is subject to legal disclaimers application and use of customer s third party customer s Customers should provide appropriate design and operating safeguards to minimize the risks associated with their applications and products NXP Semiconductors does not accept any liability related to any default damage costs or problem which is based on any weakness or default in the customer s applications or products or the application or use by customer s third party customer s Customer is responsible for doing all necessary testing for the customer s applications and products using NXP Semiconductors products in order to avoid a default of the applications and the products or of the application or use by customer s third party customer s NXP does not accept any liability in this respect Export control This document as well as the item s described herein may be subject to export control regulations Export might require a prior authorization from competent authorities Evaluation products This product is provided on an as is and with all faults basis for evaluation purposes only NXP Semiconductors its affiliates and thei
3. for evaluating the PCA8538 LCD driver e Features a vertical alignment VA COG display module with integrated backlight e Jumpers for interface selection I C or SPI e Jumper for selection of internal or external oscillator e Connector pins for easy connection to external microcontroller or application All information provided in this document is subject to legal disclaimers NXP B V 2013 All rights reserved User manual Rev 2 18 July 2013 3 of 10 NXP Semiconductors U M1 0726 User manual PCA8538 evaluation board 2 Board description and layout Fig 1 shows a picture of the board PCA8538 Evaluation Board Fig 1 PCA8538 evaluation board For best optical performance remove the protective foil from the display The jumpers are visible on the left the pins for connecting the module are at the bottom of the board 3 Board schematic and layout UM10726 The schematic of the board is given in Fig 2 The board contains the display module on the left with integrated backlight module indicated on the right as LED Backlight In addition it contains decoupling capacitors for Vpop C1 and for Vicp C2 The network R1 C3 pulls down the RESET pin when the module is powered up thus generating a reset active LOW Pin 1 can also be connected to a GPIO of a microcontroller allowing the microcontroller to generate a reset All information provided in this document is subject to legal
4. 2 18 July 2013 7 of 10 NXP Semiconductors UM10726 6 Legal information User manual PCA8538 evaluation board 6 1 Definitions Draft The document is a draft version only The content is still under internal review and subject to formal approval which may result in modifications or additions NXP Semiconductors does not give any representations or warranties as to the accuracy or completeness of information included herein and shall have no liability for the consequences of use of such information 6 2 Disclaimers Limited warranty and liability Information in this document is believed to be accurate and reliable However NXP Semiconductors does not give any representations or warranties expressed or implied as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such information In no event shall NXP Semiconductors be liable for any indirect incidental punitive special or consequential damages including without limitation lost profits lost savings business interruption costs related to the removal or replacement of any products or rework charges whether or not such damages are based on tort including negligence warranty breach of contract or any other legal theory Notwithstanding any damages that customer might incur for any reason whatsoever NXP Semiconductors aggregate and cumulative liability towards customer for the products de
5. OG display module some decoupling capacitors for the power supply and some jumpers to configure the display driver The PCA8538 is a peripheral device which interfaces to almost any Liquid Crystal Display LCD with low multiplex rates It generates the drive signals for any static or multiplexed LCD containing up to nine backplanes 102 segments and up to 918 display elements The PCA8538 features an internal charge pump with internal capacitors for on chip generation of the LCD driving voltage To ensure an optimal and stable contrast over the full temperature range the PCA8538 offers a programmable temperature compensation of the LCD supply voltage The PCA8538 can be easily controlled by a microcontroller through either the two line C bus or a four line bidirectional SPl bus It is AEC Q100 grade 2 compliant for automotive applications Please refer to the PCA8538 datasheet as well while working with this board This board was developed in order to provide a low cost tool for engineers wishing to demonstrate and evaluate this LCD driver and to get hands on experience with writing code for it Code written using this board can serve as an example for the final application This enables rapid prototyping The board can be connected to any existing application with either I C bus or SPl bus interface This application then needs to provide also the power supply with the supply voltage ranging from 2 5 V to 5 5 V Features e Provides tool
6. UM10726 User manual for the PCA8538 evaluation board OM13501A Rev 2 18 July 2013 User manual Document information Info Content Keywords LCD driver segment driver COG Chip On Glass PCA8538 Vertical Alignment VA Abstract This evaluation board can be used to demonstrate and evaluate the PCA8538 segment driver This is a chip on glass LCD driver which can drive up to 918 segments in MUX 1 9 The board contains only the display module some decoupling capacitors and some jumpers The jumpers can be used for interface selection I C or SPI A pin strip has been provided as well which makes it easy to connect the board to any microcontroller and power supply and start developing an application NXP Semiconductors U M1 0726 User manual PCA8538 evaluation board Revision history Rev Date Description 2 20130718 2 revision Type number of board corrected from OM13502 to OM13501A 1 20130702 First version Contact information For more information please visit http www nxp com For sales office addresses please send an email to salesaddresses nxp com UM10726 All information provided in this document is subject to legal disclaimers NXP B V 2013 All rights reserved User manual Rev 2 18 July 2013 2 of 10 NXP Semiconductors U M1 0726 User manual PCA8538 evaluation board 1 Introduction UM10726 This user manual describes the PCA8538 evaluation board The board contains a C
7. disclaimers NXP B V 2013 All rights reserved User manual Rev 2 18 July 2013 4 of 10 NXP Semiconductors UM10726 User manual PCA8538 evaluation board Vicp can either be generated by the internal charge pump or it can be supplied with a second supply voltage pin 13 of connector P1 In that case the internal charge pump must be disabled Jumper JP6 should be removed when using an external Vico supply voltage GND GND GND GND Fig 2 PCA8538 evaluation board schematic GND GNDGND 3 1 Jumper settings The board contains seven jumpers Five are required for the interface selection There is one jumper for oscillator selection and one jumper related to Vicp Table 1 Interface selection jumpers Jumper SPI bus I C bus JP1 IFS Vss GND Vpop JP2 nCE active LOW chip enable unused connect to Vpp JP4 SAO Vss Vss for logic 0 Vono for logic 1 JP5 SA1 Vss Vss for logic 0 Voo for logic 1 JP7 SDAOUT unused connect to Vss Place serial data output Remove jumper The other jumpers are listed in Table 2 UM10726 All information provided in this document is subject to legal disclaimers NXP B V 2013 All rights reserved User manual Rev 2 18 July 2013 5 of 10 NXP Semiconductors U M1 0726 User manual PCA8538 evaluation board Table 2 Jumpers for oscillator and Vicp selection Jumpers settings JP3 OSC Vss internal oscil
8. e I2CWrite I2CWrite 5 References PCA8538_ADDR 0b10000000 0x34 0b10000000 OxD8 0b10000000 0x18 0b10000000 OxD4 0b10000000 OxC9 0b10000000 0x45 0b10000000 0x73 0b10000000 0x00 0b10000000 OxDO 0b10000000 0xB3 0b10000000 0x39 0b10000000 0x80 0b10000000 0x90 0b10000000 OxA0 0b00100000 ee Le hil Z4 bl control by Initialize control by OTP refres control by ce Ce N Ce Device Select 0 control by Ce CLKOUT disabled control by Charge pump enabled Vlcd control by set VLCD control by set VLCD te 3 Vdd2 te SB te SB VLCD 6 4 V control by Temp control Set 1 4 control Driving control Display control Set control Set control Set by by Sc by by by by comp Data pointer x LSB te and measurement disabled te bias te nem cS 3 lin Cy inversion enable Ce Data pointer x MSB 0 ce ll 5 Ce Data pointer y 0 Write to DDRAM The document listed below provides further useful information It is available at NXP s website www nxp com 1 PCA8538 Automotive 102 x 9 Chip On Glass LCD Segment driver Product data sheet UM10726 All information provided in this document is subject to legal disclaimers NXP B V 2013 All rights reserved User manual Rev
9. lator Vpop external oscillator JP6 Vicp placed internal Vicp removed external Vicp If pin OSC is tied to Vss CLK is the output pin of the internal oscillator If pin OSC is tied to Voo CLK is the input pin for the external oscillator Fig 3 below shows the board layout DISPLAY angloch 3 5mm x 0 7mm PCAB538 Evaluation Board ma T meN BL s i T age i RoHS P13MO8K11 Fig 3 PCA8538 evaluation board layout UM10726 All information provided in this document is subject to legal disclaimers NXP B V 2013 All rights reserved User manual Rev 2 18 July 2013 6 of 10 NXP Semiconductors UM10726 4 Software code example User manual PCA8538 evaluation board Section 8 of the PCA8538 data sheet contains all the commands and their description In order to write software for this driver it will be necessary to read the datasheet Below an example for the configuration of this module is listed Exact details of how to write the functions are left to the programmer This example shows the data to be sent to the PCA8538 to configure it for use with the module on this board I2CWrite I2CWrite I2CWrite I2CWrite I2CWrite I2CWrite I2CWrite I2CWrite I2CWrite I2CWrite I2CWrite I2CWrite I2CWrite I2CWrite I2CWrite I2CWrite I2CWrite I2CWrite I2CWrite I2CWrite I2CWrite I2CWrite I2CWrite I2CWrite I2CWrite I2CWrite I2CWrite I2CWrit
10. nnnnnnnnnnnnnnnnnnnnnennnnnnnnn 9 8 Contents Please be aware that important notices concerning this document and the product s described herein have been included in the section Legal information NXP B V 2013 All rights reserved For more information please visit http www nxp com For sales office addresses please send an email to salesaddresses nxp com Date of release 18 July 2013 Document identifier UM10726
11. r suppliers expressly disclaim all warranties whether express implied or statutory including but not limited to the implied warranties of non infringement merchantability and fitness for a particular purpose The entire risk as to the quality or arising out of the use or performance of this product remains with customer In no event shall NXP Semiconductors its affiliates or their suppliers be liable to customer for any special indirect consequential punitive or incidental damages including without limitation damages for loss of business business interruption loss of use loss of data or information and the like arising out the use of or inability to use the product whether or not based on tort including negligence strict liability breach of contract breach of warranty or any other theory even if advised of the possibility of such damages Notwithstanding any damages that customer might incur for any reason whatsoever including without limitation all damages referenced above and all direct or general damages the entire liability of NXP Semiconductors its affiliates and their suppliers and customer s exclusive remedy for all of the foregoing shall be limited to actual damages incurred by customer based on reasonable reliance up to the greater of the amount actually paid by customer for the product or five dollars US 5 00 The foregoing limitations exclusions and disclaimers shall apply to the maximum extent permitted by
12. scribed herein shall be limited in accordance with the Terms and conditions of commercial sale of NXP Semiconductors Right to make changes NXP Semiconductors reserves the right to make changes to information published in this document including without limitation specifications and product descriptions at any time and without notice This document supersedes and replaces all information supplied prior to the publication hereof Suitability for use NXP Semiconductors products are not designed authorized or warranted to be suitable for use in life support life critical or safety critical systems or equipment nor in applications where failure or malfunction of an NXP Semiconductors product can reasonably be expected to result in personal injury death or severe property or environmental damage NXP Semiconductors accepts no liability for inclusion and or use of NXP Semiconductors products in such equipment or applications and therefore such inclusion and or use is at the customer s own risk Applications Applications that are described herein for any of these products are for illustrative purposes only NXP Semiconductors makes no representation or warranty that such applications will be suitable for the specified use without further testing or modification Customers are responsible for the design and operation of their applications and products using NXP Semiconductors products and NXP Semiconductors accepts no liability for any
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