developed through a partnership with unicorn, this advanced display showcases the chip- on-glass (cog) lcd driver pca8538 and the capacitive sensor pca8885. it can be used to drive a segmented vertical alignment (va) display with integrated touch buttons, and supports a wide range of automotive, industrial, and consumer applications. nxp display demo with cog lcd driver pca8538 & capacitive sensor pca8885 touch-sensitive segmented 9 x 102 display demo boar d key features ` va display with 1:8 multiplex drive mode and 8 touch buttons ` on-cell ito touch layer ` lcd driver pca8538 - maximum resolution: 9 x 102 - bare die with bumps for chip-on-glass (cog) applications ` capacitive sensor pca8885 - tssop28 package - 8 sensor channels - each channel drives one touch button ` display supplied by unicorn a pplications ` automotive - climate control - car entertainment - car radios ` industrial and consumer - entertainment devices - small appliances - white goods - medical and healthcare - measuring equipment - information boards - general-purpose display modules
? 2013 nxp semiconductors n.v. all rights reserved. reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. the information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. no liability will be accepted by the publisher for any consequence of its use. publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights. date of release: june 2013 document order number: 9397 750 17455 printed in the netherlands pca 8538 u key features ` 102 segments and 9 backplane outputs - graphics with up to 918 display elements - up to 114 seven-segment alphanumeric characters - up to 57 fourteen-segment numeric characters ` multiplex rates selectable from static up to 1:9 ` on-chip generation of v lcd up to 12 v ` software-programmable temperature compensation of v lcd for high, stable contrast over full temperature range: 6 programmable temperature ranges and 8 programmable slopes ` software-programmable and factory-calibrated frame frequency from 45 to 300 hz ` integrated temperature sensor with temperature readout ` up to four ics can be cascaded to drive displays up to 4 x 918 elements ` wide power supply range: 2.5 to 5.5 v ` selectable i 2 c (400 khz) or spi (3 mhz) interface ` extended operating temperature range: -40 to +105 c ` aec-q100 compliant for automotive applications ` bare die with bumps for cost-saving chip-on-glass (cog) applications pca 8885 ts key features ` capacitive 8-channel touch and proximity sensor with auto- calibration ` adjustable sensitivity and response time ` three sensing modes: one-key, two-keys, n-keys - up to 8 sensors in one-key mode - up to 28 sensors in two-keys mode ` two event handling modes: push-button and toggle ` i 2 c fast-mode plus interface, up to 1 mhz ` one sub-address for cascading two ics (up to 64 sensors) ` power supply range: 2.5 to 5.5 v ` low power consumption - 10 a in operating mode - 100 na in sleep mode (activated via i 2 c or external input) ` operating temperature range: -40 to +85 c ` tssop28 package: 9.7 x 4.4 x 0.9 mm ` aec-q100 compliant for automotive applications s ample displays glass it o touch layer polarizer it o layer (electrode) liquid crystal o n-cell ito touch layer type pacage and description deliery format ic ersion pca8538ug/2da/q1 bare die; 247 bumps; 5.88 x 1.20 x 0.4 mm chip in tray 1 pca8885ts/q900/1 tssop28: plastic small outline package; 28 leads; body size: 9.7 mm x 4.4 mm x 0.9 mm tape and reel, 13 inch 1 o rdering information compared to the normal structure, where the ito touch glass is implemented outside the lcd structure, the on-cell technology offers the following advantages: - simpler structure: two glass layers instead of three - thinner thickness - easier assembly - lower cost touch-sensitive display for climate control with fan, air-conditioning, clock, and ventilation controls. each touch-sensitive icon is implemented as an outline icon and a solid icon. outline icons indicate where to touch; solid icons display after the outline icon is touched. www.nxp.com
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