MIC10941PE-50BN [MICREL]
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MICREL SEMICONDUCTOR 
MIC10941/10939
V. F. Alphanumeric and Bargraph Display Controller
Summary Information*—Not Recommended for New Designs
General Description
Features
The MIC10941 and MIC10939 Alphanumeric and Bargraph
Display Controller is a two-chip MOS/LSI general purpose
display controller system designed to interface with bargraph
and segmented displays (vacuum fluorescent or LED).
• 20-character display driver cascadable to 80 characters
• Direct drive capability for vacuum-fluorescent displays
• 128 × 18 PLA provides segment decoding for ASCII
characters (all caps only) and bargraph patterns
• Serial or parallel data input for 8-bit display and control
characters
• Brightness, refresh rate, and display mode controls
• Separate cursor driver output
• 40-pin DIP or 44-pin PLCC (MIC10939)
• 24-pin DIP package (MIC10941)
The two-chip set will drive displays with up to 16 segments
(plus decimal point and comma tail) and up to 20 grids
(characters) plus a cursor. The chips can be cascaded to
drive larger displays of 80 characters. Segment decoding for
ASCII characters and bargraph patterns is accomplished
through an internal PLA.
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
0°C to +70°C
Package
MIC10941P-50
MIC10941PE-50
MIC10939J-50
MIC10939P-50
MIC10939PE-50
24-pin P-DIP
24-pin P-DIP
44-pin PLCC
40-pin P-DIP
40-pin P-DIP
–40°C to +85°C
0°C to +70°C
0°C to +70°C
–40°C to +85°C
Block Diagram
20-CHARACTER 16-SEGMENT ALPHANUMERIC OR BARGRAPH DISPLAY
TAIL
PNT
SG01-SG16
CURSOR
STR00–STR19
SEGMENT DRIVERS AND LATCHES
GRID DRIVERS
INVERSION
LOGIC
LEVEL
DETECT
LOGIC
SCLK-DIS
128 × 18 PLA
CONTROL
LOGIC
20 × 8
RAM
8-BIT SHIFT
REGISTER
LEVEL
DETECT
LOGIC
DATA-LOAD
MIC10941
MIC10939
HOST
* Contact Micrel for more information.
8-24
August 1998
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