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LS7055 Datasheet(PDF) 4 Page - LSI Computer Systems

No. de pieza LS7055
Descripción Electrónicos  6 DECADE PREDETERMINING UP/DOWN COUNTER
PDF  6 Pages
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Fabricante Electrónico  LSI [LSI Computer Systems]
Página de inicio  http://www.lsicsi.com
Logo LSI - LSI Computer Systems

LS7055 Datasheet(HTML) 4 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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COUNTER AT
MAINSIGNAL VALUE
COUNTER AT
PRESIGNAL VALUE
COUNTER AT
ZERO
MAINSIGNAL OUTPUT
PRESIGNAL OUTPUT
ZERO DETECT OUTPUT
MANUAL
RESET
FIGURE 2. AUTOMATIC OR MANUAL OPERATION IN UP MODE
AUTOMATIC
RESET
COUNTER AT
PRESET NUMBER
COUNTER AT
PRESIGNAL VALUE
COUNTER AT
ZERO
MAINSIGNAL OUTPUT
PRESIGNAL OUTPUT
ZERO DETECT OUTPUT
MANUAL
PRESET
FIGURE 3. AUTOMATIC OR MANUAL OPERATION IN DOWN MODE
COUNTER AT
MAINSIGNAL
NUMBER
AUTOMATIC
PRESET
TUDH
Tudh
Tds
Tdh
Tcs
Tch
Trpw
Tppw
Tdo
Tdo
Tgb
Tgb
Tdth
Tiph
COUNT INPUT
UP/DOWN
DIVIDE CONTROL
COUNT INHIBIT
RESET
INHIBIT
INTERNAL RESET
PRESET ENABLE
INHIBIT
INTERNAL PRESET
MAINSIGNAL, PRESIGNAL,
ZERO DETECT OUTPUT
DATA TRANSFER
INPUT
SCAN CLOCK
INPUT
MSD OUTPUT
LSD +4 OUTPUT
7 SEGMENTS
OUTPUTS
BCD OUTPUTS
STORAGE SELECT
INPUTS
BCD DATA
INPUT
*
FIGURE 4. TIMING DIAGRAM
* BCD data input assumed to be applied from a set of thumbwheel switches as shown in Figure 5.
Tirh
7055-012703-4



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