Document
MIC10939/10942/10943
Micrel
MIC10939/10942/10943
V. F. Dot Matrix Display Controller Summary Information*—Not Recommended for New Designs
General Description
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.
Features
• • • • • • • • 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
Part Number Temperature Range 0°C to +70°C 0°C to +70°C –40°C to +85°C 0°C to +70°C –40°C to +85°C 0°C to +70°C –40°C to +85°C Package 44-Pin PLCC 40-pin P-DIP 40-pin P-DIP 40-pin P-DIP 40-pin P-DIP 40-pin P-DIP 40-pin P-DIP MIC10939J-50 MIC10939P-50 MIC10939PE-50 MIC10942P-50 MIC10942PE-50 MIC10943P-50 MIC10943PE-50
Micrel has received the rights from Rockwell International to manufacture and market this product and reproduce the specifications, including references to Rockwell.
Block Diagram
20-CHARACTER 5 × 12 DOT MATRIX DISPLAY 23 SG01-SG23 23 SG01-SG23
ANODE DRIVERS AND LATCHES
ANODE DRIVERS AND LATCHES
8
INVERSION LOGIC LEVEL DETECT 128 × 35 PLA
DATALOAD
INVERSION LOGIC LEVEL DETECT 128 × 23 PLA
8-BIT SHIFT REGISTER MIC10942
LEVEL DETECT
SCLK -DIS
LEVEL DETECT
8-BIT SHIFT REGISTER MIC10943
20 × 8 RAM MIC10939
CONTROL LOGIC
GRID DRIVERS
CURSOR 20 STR00–STR19
HOST
* Contact Micrel for more information.
August 1998
8-23
.