MIC10939/10942/10943 Micrel MIC10939/10942/10943 V. F. Dot Matrix Display Controller Summary Information*—Not Recommended for New Designs General Description Features The MIC10939, MIC10942, and MIC10943 Dot Matrix Display Controller is a three-chip MOS/LSI general purpose display controller system designed to interface to dot matrix displays (vacuum fluorescent or LED). The three-chip set will drive displays with up to 46 anodes (dots) and up to 20 grids (characters) plus a cursor. The chips can be cascaded to drive larger displays of up to 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. • • • • • • • • 20-character display driver cascadable to 80 characters Standard 5 × 12 character font Separate cursor driver output Two 128 × 23 PLAs provides segment decoding for full 96-character ASCII set, plus 32 special characters Serial or parallel data input for 8-bit display mode controls Brightness, refresh rate, and display mode controls 40-pin DIP or 44-pin PLCC (MIC10939) 28-pin DIP (MIC10942 and MIC10943) Ordering Information Micrel has received the rights from Rockwell International to manufacture and market this product and reproduce the specifications, including references to Rockwell. Part Number Temperature Range Package MIC10939J-50 0°C to +70°C 44-Pin PLCC MIC10939P-50 MIC10939PE-50 MIC10942P-50 MIC10942PE-50 Block Diagram MIC10943P-50 MIC10943PE-50 0°C to +70°C 40-pin P-DIP –40°C to +85°C 40-pin P-DIP 0°C to +70°C 40-pin P-DIP –40°C to +85°C 40-pin P-DIP 0°C to +70°C 40-pin P-DIP –40°C to +85°C 40-pin P-DIP 20-CHARACTER 5 × 12 DOT MATRIX DISPLAY 23 SG01-SG23 23 ANODE DRIVERS AND LATCHES INVERSION LOGIC INVERSION LOGIC LEVEL DETECT 128 × 35 PLA 8-BIT SHIFT REGISTER 8 ANODE DRIVERS AND LATCHES DATALOAD LEVEL DETECT SG01-SG23 128 × 23 PLA LEVEL DETECT SCLK -DIS LEVEL DETECT 8-BIT SHIFT REGISTER MIC10942 MIC10943 20 × 8 RAM CONTROL LOGIC GRID DRIVERS CURSOR 20 STR00–STR19 MIC10939 HOST August 1998 8-23 * Contact Micrel for more information.