MIC10941/10939
Micrel
8-24
August 1998
MIC10941/10939
V. F. Alphanumeric and Bargraph Display Controller
Summary Information*--Not Recommended for New Designs
Ordering Information
Part Number
Temperature Range
Package
MIC10941P-50
0
C to +70
C
24-pin P-DIP
MIC10941PE-50
40
C to +85
C
24-pin P-DIP
MIC10939J-50
0
C to +70
C
44-pin PLCC
MIC10939P-50
0
C to +70
C
40-pin P-DIP
MIC10939PE-50
40
C to +85
C
40-pin P-DIP
General Description
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).
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.
Micrel has received the rights from Rockwell International to
manufacture and market this product and reproduce the
specifications, including references to Rockwell.
Block Diagram
Features
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)
INVERSION
LOGIC
8-BIT SHIFT
REGISTER
SEGMENT DRIVERS AND LATCHES
128
18 PLA
LEVEL
DETECT
LOGIC
CONTROL
LOGIC
GRID DRIVERS
20
8
RAM
HOST
20-CHARACTER 16-SEGMENT ALPHANUMERIC OR BARGRAPH DISPLAY
MIC10941
MIC10939
SG01-SG16
CURSOR
STR00STR19
SCLK-DIS
DATA-LOAD
LEVEL
DETECT
LOGIC
PNT
TAIL
* Contact Micrel for more information.
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