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LS7055 数据表(PDF) 5 Page - LSI Computer Systems

部件名 LS7055
功能描述  6 DECADE PREDETERMINING UP/DOWN COUNTER
PDF  6 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  LSI [LSI Computer Systems]
网页  http://www.lsicsi.com
标志 LSI - LSI Computer Systems

LS7055 数据表(HTML) 5 Page - LSI Computer Systems

  LS7055 Datasheet HTML 1Page - LSI Computer Systems LS7055 Datasheet HTML 2Page - LSI Computer Systems LS7055 Datasheet HTML 3Page - LSI Computer Systems LS7055 Datasheet HTML 4Page - LSI Computer Systems LS7055 Datasheet HTML 5Page - LSI Computer Systems LS7055 Datasheet HTML 6Page - LSI Computer Systems  
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 5 / 6 page
background image
7055-012703-5
6 DIGIT
SELECT
OUTPUT
4 BCD DATA
OUTPUTS
MAINSIGNAL OUTPUT
PRESIGNAL OUTPUT
ZERO DETECT OUTPUT
RESET INPUT
INHIBIT INTERNAL
RESET INPUT
INHIBIT INTERNAL
PRESET INPUT
PRESET ENABLE
INPUT
UP/DOWN INPUT
7 SEGMENT OUTPUTS
DIVIDE CONTROL INPUTS
COUNT INPUT
COUNT INHIBIT
LOAD
COMMAND
Vss
BLANKING OVERRIDE
OR LAMP TEST
DATA TRANSFER INPUT
Vss
100k
(typical)
LE
LATCH ENABLE
LE
LE
LE
LE
Vss
Vss
VDD
THUMBWHEEL SWITCHES
FIGURE 5. SYSTEM INTERCONNECTION DIAGRAM
BCD DATA INPUTS
BUFFER
BUFFER
LED DISPLAY
51K
VDD
SELECT STORAGE
INPUTS
LS7055/LS7056
SCAN INPUT
1µF
(typical)
10k
EXT.
LATCH



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