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DLX3416 Datasheet(PDF) 1 Page - OSRAM GmbH |
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DLX3416 Datasheet(HTML) 1 Page - OSRAM GmbH |
1 / 5 page 2000 Infineon Technologies Corp. • Optoelectronics Division • San Jose, CA www.infineon.com/opto • 1-888-Infineon (1-888-463-4636) OSRAM Opto Semiconductors GmbH & Co. OHG • Regensburg, Germany www.osram-os.com • +49-941-202-7178 1 May 31, 2000-12 An Intelligent Display also provides internal memory for the four digits. This approach allows the user to asynchronously address one of four digits, and load new data without regard to the LED multiplex timing. Figure 1 is a block diagram of the DLX3416. The unit consists of four (5x7) LED arrays and a single CMOS integrated chip. The IC chip contains the column and row drivers, 128 character ROM, four word x7 bit Random Access Memory, oscillator for multiplexing, multiplex counter/decoder, cursor memory, address decoder, and miscellaneous control logic. This application note is intended to serve as a design and appli- cation guide for users of the DLX3416 (referred to as 3416 hereafter) alphanumeric Intelligent Displays. This appnote also covers device electrical description and operation, consider- ations for general circuit design, and interfacing the 3416 to microprocessors. Refer to the specific data sheet and other Infineon / OSRAM Appnotes for more details. Electrical & Mechanical Description The internal electronics in these Intelligent Displays eliminates all the traditional difficulties of using multi-digit light emitting displays (segment decoding, drivers, and multiplexing). Figure 1. Block diagram—DLX3416 Rows 0 to 6 Display Columns 0 to 19 Display Output Logic Cue Ro w Co ntro l Lo g i c & Row Drivers Row Decoder ROM 128x35 Bit ASCII Character Decode 4480 Bits D6 D5 D4 D3 D2 D1 D0 Write Address Decoder RAM Memory Timing and Control Logic Cursor Memory Bits 0 to 3 Address Lines 4x7 Bit OSC ÷128 Counter ÷7 Counter Cursor Memory 4x1 Bit 7 Bit ASCII Code RAM Read Logic Column Data WR A0 A1 CE1 CE2 CE3 CE4 CU BL 3 2 1 0 Applying the DLX3416* Intelligent Display® Device Appnote 17 |
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Descripción similar - DLX3416 |
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