MIC10938/10939
Micrel
8-22
August 1998
MIC10938/10939
V. F. Dot Matrix Display Controller
Summary Information*--Not Recommended for New Designs
Ordering Information
Part Number
Temperature Range
Package
MIC10938J-50
0
C to +70
C
44-pin PLCC
MIC10938P-50
0
C to +70
C
40-pin P-DIP
MIC10938PE-50
40
C to +85
C
40-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
Dual-marked devices replace both 40V and 50V versions
General Description
The MIC10938 and MIC10939 Dot Matrix Display Controller
is a two-chip MOS/LSI general purpose display controller
system designed to interface to dot matrix displays (vacuum
fluorescent or LED).
The two-chip set will drive displays with up to 35 anodes
(dots) and up to 20 grids (characters) plus a cursor. The chips
can be cascaded to drive larger displays of as many as 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.
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
Standard 5
7 character font
Separate cursor driver output
Direct drive capability for vacuum-fluorescent displays
128
35 PLA provides segment decoding for full 96-
character ASCII set, plus 32 special characters
Serial or parallel data input for 8-bit display and control
characters
40-pin DIP or 44-pin PLCC
INVERSION
LOGIC
8-BIT SHIFT
REGISTER
ANODE DRIVERS AND LATCHES
128
35 PLA
LEVEL
DETECT
LOGIC
CONTROL
LOGIC
GRID DRIVERS
20
8
RAM
HOST
20-CHARACTER 5
7 DOT MATRIX DISPLAY
MIC10938
MIC10939
SG01-SG35
CURSOR
STR00STR19
DATA-LOAD
SCLK-DIS
LEVEL
DETECT
LOGIC
* Contact Micrel for more information.
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