MIC10937/10957
Micrel
MIC10937
V. F. Alphanumeric Display Controller
General Description
The MIC10937 Alphanumeric Display Controllers is a MOS/
LSI general purpose display controllers designed to interface
to segmented displays (vacuum fluorescent or LED).
The MIC10937 will drive displays with up to 16 characters
with 14 or 16 segments. Segment decoding within each
device provides for the ASCII character set (upper case only).
No external driver circuitry is required for displays that oper-
ate on 20mA of drive current up to 50V. A 16
×
64-bit segment
decoder provides internal ASCII character set decoding for
the display.
Features
•
•
•
•
•
•
16-character display with decimal point and comma tail
14 or 16-segment drivers
Up to 66kHz data rate
Direct digit drive and 20mA at 50V
Supports vacuum fluorescent or LED displays
64
×
16-bit PLA provides segment decoding for ASCII
character set (all caps only)
• Serial data input for 8-bit display and control data words
• 40-pin DIP or 44-pin PLCC
Ordering Information
Part Number
MIC10937J-40
MIC10937P-40/
MIC10937P-50
†
MIC10937PE-40/
MIC10937PE-50
†
†
Micrel has received the rights from Rockwell International to
manufacture and market this product and reproduce the
specifications, including references to Rockwell.
Drive
40V
50V
50V
Temp. Range
0°C to +70°C
0°C to +70°C
–40°C to +85°C
Package
44-pin PLCC
40-pin P-DIP
40-pin P-DIP
Dual-marked devices replace both 40V and 50V versions
Block Diagram
DATA
SCLK
TIMING
AND
CONTROL
6
×
16
DISPLAY
DATA
BUFFER
2
×
16
DECIMAL POINT
COMMA TAIL
BUFFER
64
×
16 PLA
SEGMENT
DECODER
POR
VSS
VDD
A
DIGIT DRIVERS
(GRID)
SEGMENT
DRIVERS
(ANODE)
SGA
SGB
SGC
SGD
SGE
SGF
SGG
SGH
SGI
SGJ
SGK
SGL
SGM
SGN
SGO
SGP
PNT
TAIL
October 1998
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MIC10937/10957
模拟电子
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