austriamicrosystems AG is now ams AG The technical content of this austriamicrosystems document 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 AS1121 - Demo Board Manual al id Demo Board Manual AS1121 am lc s on A te G nt st il lv 16-Channel LED Driver with Dot Correction and Greyscale PWM Te ch ni ca www.austriamicrosystems.com/LED-Driver-ICs www.austriamicrosystems.com Revision 2.03 1-8 AS1121 - Demo Board Manual General Description al id Board Description am lc s on A te G nt st il lv Figure 2: Input Line “D” Figure 3: Output Line “E” Figure 1: Board Description Supply Description Label Name A B VDD GND C VLED Description Info Supply Voltage Ground Supply voltage ranging from 3.1V to 3.6V Supply Voltage for the LED’s The output current drivers of the AS1121 can handle up to +30V. I/O - Interface Connector Description Name D IN E OUT F LED Description Info Line In Connector Line Out Connector ca Label Serial Data Output Greyscale Clock Serial Data Load Serial Data Shift Clock Serial Data Input Reference clock for greyscale PWM control Data transferred at the rising edge ch ni SDO GSCLK LD CLK SDI in Connector to LED board XERR Error Output SDI out Serial Data Output OEN Output Enable MODE Mode Select Input Te G www.austriamicrosystems.com Can be connected to OUT “E” of the previous board. Can be connected to IN “D” of the next board. Can be connected to the RGB LED board, single color LED board or customer board. 0: LED open detection or over temperature condition is detected 1: normal operation 0: Output drivers enabled 1: Output drivers disabled 0: greyscale mode 1: dot correction mode Revision 2.03 2-8 AS1121 - Demo Board Manual Jumper Description Label Name Description H Chain Connect more devices in series Info YES: more AS1121 are connected together NO: only one AS1121 is used PD-OFF: Normal Operation Mode I PD Power Down PD-ON: Power Down Mode RIref User Resistor Connector for resistor to set the load current. K Open LED Open Detection Remove Jumper to simulate an open circuit. L VCC->VLED LED Supply Voltage Remove Jumper to use external LED supply voltage via connector VLED “C”. Te ch ni ca am lc s on A te G nt st il lv al id J www.austriamicrosystems.com Revision 2.03 3-8 AS1121 - Demo Board Manual Quickstart Hardware am lc s on A te G nt st il lv al id Connect the demo board via the adapter board with the austriamicrosystems USB box, like shown in the picture below. Software Te ch ni ca Before starting the software make sure that the austriamicrosystems USB box is connected to the AS1121 demo board and a supply (3.1V to 3.6V) is connected to the AS1121 demoboard. To quickly turn on all LEDs activate the Direct Mode and All On/Off check boxes (marked red in the figure below). In the box Source Selection the Dot correction and the PWM need to be set to a value unlike 0. www.austriamicrosystems.com Revision 2.03 4-8 AS1121 - Demo Board Manual Operational sequence This demo board comes with the AS1121. Drive the IC on the demo board only with the recommended settings and values as described in the datasheet. If not present get the datasheet for the AS1121 from http://www.austriamicrosystems.com. 2. Place an external resistor in RIref “J” to set the LED current. 3. Connect a +3.1V to +3.6V power supply (VDD “A” and GND “B”). 4. The LEDs are supplied via VDD. If necessary remove jumper VCC->VLED “L” and connect a voltage supply to connector VLED “C”. The output drivers sustain a maximum voltage of +30V 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. am lc s on A te G nt st il lv If there are questions do not hesitate to contact us. See contact information at the end of this manual. Available LED boards Te ch ni ca The following two boards are included to the demo board and can be connected to the AS1121 board. Figure 4: single color LED board www.austriamicrosystems.com Figure 5: RGB LED board Revision 2.03 5-8 AS1121 - Demo Board Manual Layout of Demo Board am lc s on A te G nt st il lv al id Board schematics ca Figure 6: Schematic – AS1121 board Figure 8: Schematic – single color LED board Te ch ni Figure 7: Schematic – RGB LED board www.austriamicrosystems.com Revision 2.03 6-8 AS1121 - Demo Board Manual am lc s on A te G nt st il lv al id Board layout Figure 9: Top and Bottom Layer – AS1121 board Figure 11: Top and Bottom Layer – single color LED board Te ch ni ca Figure 10: Top and Bottom Layer – RGB LED board www.austriamicrosystems.com Revision 2.03 7-8 AS1121 - Demo Board Manual Copyright Copyright © 1997-2011, austriamicrosystems AG, Tobelbaderstraße 30, 8141 Unterpremstätten - Graz, Austria Europe. 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. All products and companies mentioned are trademarks or registered trademarks of their respective companies. Disclaimer ca am lc s on A te G nt st il lv al id 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 life-sustaining 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. ni Contact Information Te ch Headquarters austriamicrosystems AG Tobelbaderstraße 30 A-8141 Unterpremstätten - Graz, 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 2.03 8-8