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 Dis-
play 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 charac-
ters.
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
DATA-
LOAD
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
微控制器 MCU
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