austriamicrosystems AG is now ams AG The technical content of this austriamicrosystems application note is still valid. Contact information: Headquarters: ams AG Tobelbaderstrasse 30 8141 Unterpremstaetten, Austria Tel: +43 (0) 3136 500 0 e-Mail: [email protected] Please visit our website at www.ams.com AS1112 - Evaluation Board Application Note AS1112 Te am s ch AG ni ca lc on te nt st ill v al id Evaluation Board Application Note www.austriamicrosystems.com Revision 1.00 1-5 AS1112 - Evaluation Board Application Note General Description Board Description ill v al id Figure 2: Input Line (D) Figure 3: Output Line (E) Figure 1: Evalboard Description Name Description A B C VCC GND VLED Power Supply Connectors for VDD and Ground. Supply Voltage for the LED’s Info Name Description D E F IN OUT Line In Connector Line Out Connector Measurement Points XERR GSCK Error Output Greyscale Clock LD Data Latch SDI GND SDO Serial Data Input Ground Serial Data Output OEN Output Enable CLK Serial Data Clock MODE Mode Select Info Can be directly connected to OUT (E) of the previous board. Can be directly connected to IN (D) of the next board. Description follows below. am s ch AG ni ca lc on Label The output current drivers of the AS1112 can handle up to +15V. te Connector Description +3.0V to +5.5V nt Label st Supply Description 0: Open or Temp. Error Detected 1: Normal Operation Reference clock for grayscale PWM control. (MODE = GND): the greyscale register receives new data. (MODE = VCC): the dot correction register receives new data. 0 = OUTn outputs are controlled by the greyscale PWM control. 1 = OUTn outputs are forced off; the greyscale counter is reset. Input with internal pulldown MODE = GND: Selects greyscale mode MODE = VCC: Selects dot correction mode Components Connectors Description Name Description Info Te Label G SDO Termin. H Power Down I Rext External Resistor J OUTN0-15 Output Current Drivers K CLED Decoupling Capacity of LEDs www.austriamicrosystems.com This jumper must be set if only a single board is in use, or on the last board in a daisy chain. Input with internal pulldown 0 = normal operation mode 1 = powerdown mode Place resistor here to set the load current. Connector for LED’s. Upper side interfaces with the output drivers of the AS1112 while the bottom line connects to VLED. Jumper to (dis)connect the onboard capacity. Revision 1.00 2-5 AS1112 - Evaluation Board Application Note Operational sequence If not present get the datasheet for the AS1112 from www.austriamicrosystems.com. Use the IC on the evaluation board only with the recommended settings and values as described in the datasheet. 2. Place an external resistor in Rext “I” to set the LED current. If another capacitance then 330µF 35V is needed it is possible to disconnect the onboard capacity through the Jumper CLED “K”. Connect the LEDs with the output current drivers “J”. 3. Connect a +3.0V to +5.5V power supply (VDD “A” and GND “B” or via Line IN “D”). 4. Connect a voltage supply to VLED “C”. The output drivers sustain a maximum voltage of +15V at the pin. 5. Connect the Serial Data Interface via Line IN “D”. For the data format of the serial interface please see the datasheet of the AS1112. al id 1. ill v Have fun using the evaluation board. If there are questions do not hesitate to contact us. See contact information at the end of the application note. st Layout of demoboard Board schematics and layout Te am s ch AG ni ca lc on te nt Figure 3: Schematics www.austriamicrosystems.com Revision 1.00 3-5 AS1112 - Evaluation Board Application Note Figure 5: Bottom view al id Figure 4: Top view Type GRM31CR71C106KAC7 GRM21BR71H104KA01 Manufacturer Murata Murata st Info 10µF, ±10%, 16V, X7R 0.1µF , ±10%, 50V, X7R 330u, 35V, Electrolytic Condensator Te am s ch AG ni ca lc on te nt Label C1 C2, C4 C3 ill v Recommended parts www.austriamicrosystems.com Revision 1.00 4-5 AS1112 - Evaluation Board Application Note Copyright Copyright © 1997-2007, austriamicrosystems AG, Schloss Premstaetten, 8141 Unterpremstaetten, AustriaEurope. Trademarks Registered ®. All rights reserved. The material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. al id All products and companies mentioned are trademarks or registered trademarks of their respective companies. Disclaimer am s ch AG ni ca lc on te nt st ill v Devices sold by austriamicrosystems AG are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. austriamicrosystems AG makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. Austriamicrosystems AG reserves the right to change specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with austriamicrosystems AG for current information. This product is intended for use in normal commercial applications. Applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life-support or lifesustaining equipment are specifically not recommended without additional processing by austriamicrosystems AG for each application. For shipments of less than 100 parts the manufacturing flow might show deviations from the standard production flow, such as test flow or test location. The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However, austriamicrosystems AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of austriamicrosystems AG rendering of technical or other services. Contact Information Te Headquarters austriamicrosystems AG A-8141 Schloss Premstätten, Austria T. +43 (0) 3136 500 0 F. +43 (0) 3136 5692 For Sales Offices, Distributors and Representatives, please visit: http://www.austriamicrosystems.com/contact www.austriamicrosystems.com Revision 1.00 5-5