MC14029B 데이터 시트보기 (PDF) - Motorola => Freescale
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MC14029B Datasheet PDF : 8 Pages
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TIMING DIAGRAM
CLOCK
CARRY IN
UP/DOWN
BINARY/DECADE
PE
P0
P1
P2
P3
Q0
Q1
Q2
Q3
CARRY OUT
COUNT 0 1 2 3 4 5 6 7 8 9 8 7 6 5 4 3 2 1 0 0 9 6 7 0
Cout
U/D
B/D
P3
Q3 Q2 Q1 Q0
MC14029B Cin
MSD
PE
P2 P1 P0 CLK
INPUT
CLOCK
“1” VDD
Cout
U/D
B/D
P3
Q3 Q2 Q1 Q0
Cin
MC14029B
PE
P2 P1 P0 CLK
“2” VDD
Cout
U/D
B/D
P3
Q3 Q2 Q1 Q0
MC14029B Cin
LSD
PE
P2 P1 P0 CLK
“3” VDDVDD
CLOCK
Cout 1 (LSD)
Cout 2
Cout 3 (MSD)
PE
COUNT
^ * tW 900 ns @ VDD = 5 V
Figure 3. Divide by N BCD Down Counter and Timing Diagram
(Shown for N = 123)
OUTPUT
MC14029B
124
MOTOROLA CMOS LOGIC DATA
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