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| MIC10938/10939 Micrel MIC10938/10939 V. F. Dot Matrix Display Controller Summary Information*--Not Recommended for New Designs General Description The MIC10938 and MIC10939 Dot Matrix Display Controller is a two-chip MOS/LSI general purpose display controller system designed to interface to dot matrix displays (vacuum fluorescent or LED). The two-chip set will drive displays with up to 35 anodes (dots) and up to 20 grids (characters) plus a cursor. The chips can be cascaded to drive larger displays of as many as 80 characters. An internal PLA-type decoder provides character decoding and dot pattern generation for the full 96-character ASCII set and an additional 32 special characters. Features * * * * * 20-character display driver cascadable to 80 characters Standard 5 x 7 character font Separate cursor driver output Direct drive capability for vacuum-fluorescent displays 128 x 35 PLA provides segment decoding for full 96character ASCII set, plus 32 special characters * Serial or parallel data input for 8-bit display and control characters * 40-pin DIP or 44-pin PLCC Ordering Information Part Number Temperature Range 0C to +70C 0C to +70C -40C to +85C 0C to +70C 0C to +70C -40C to +85C Package 44-pin PLCC 40-pin P-DIP 40-pin P-DIP 44-pin PLCC 40-pin P-DIP 40-pin P-DIP MIC10938J-50 MIC10938P-50 MIC10938PE-50 MIC10939J-50 MIC10939P-50 MIC10939PE-50 Micrel has received the rights from Rockwell International to manufacture and market this product and reproduce the specifications, including references to Rockwell. Dual-marked devices replace both 40V and 50V versions Block Diagram 20-CHARACTER 5 x 7 DOT MATRIX DISPLAY SG01-SG35 CURSOR STR00-STR19 ANODE DRIVERS AND LATCHES GRID DRIVERS INVERSION LOGIC LEVEL DETECT LOGIC 128 x 35 PLA DATA-LOAD CONTROL LOGIC LEVEL DETECT LOGIC SCLK-DIS 20 x 8 RAM 8-BIT SHIFT REGISTER MIC10938 MIC10939 HOST * Contact Micrel for more information. 8-22 August 1998 |
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