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CLOCK
UP/DOWN
CARRY IN
(MSD)
PE
P8
P7
P6
P5
P4
P3
P2
P1
CARRY OUT
(MSD)
Q8
Q7
Q6
Q5
Q4
Q3
Q2
Q1
CARRY OUT
(LSD)
RESET
COUNT MSD
6
6
6
7
7
COUNT LSD
7
8
9
0
1
PRESET ENABLE
UP COUNT
MC14510B
6–254
TIMING DIAGRAM FOR THE PRESETTABLE
CASCADED 8–BIT UP/DOWN COUNTER
7
7
7
7
7
6
6
2
3
2
1
0
9
8
DOWN COUNT
6
6
9
9
9
9
9
7
6
6
6
7
8
9
PRESET
ENABLE
UP COUNT
MOTOROLA CMOS LOGIC DATA
0
0
0
0
0
0
0
0
1
2
1
0
1
0
RESET
DOWN
COUNT
UP COUNT
0
0
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