MC14516B ON Semiconductor, MC14516B Datasheet - Page 10

• Manufacturer Part Number: MC14516B
• Description: Binary Up/Down Counter
• Manufacturer: ON Semiconductor

NOTE: The programmable frequency divider can be set by applying the desired divide ratio, in binary, to the preset inputs. For example,
+V
CLOCK (f
DD
RESET
the maximum divide ratio of 255 may be obtained by applying a 1111 1111 to the preset inputs P0 to P7. For this divide operation,
both counters should be configured in the count down mode. The divide ratio of zero is an undefined state and should be avoided.
OPEN = COUNT
in
)
PE
C
CLOCK
U/D
R
Q0
Q0
in
P0
P0
THUMBWHEEL SWITCHES
Q1
Q1
P1
P1
(OPEN FOR “0”)
Figure 4. Programmable Cascaded Frequency Divider
MC14516B
L.S.D.
+V
DD
Q2
Q2
P2
P2
Q3
Q3
P3
P3
C
out
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MC14516B
10
PE
C
CLOCK
U/D
R
Q4
Q0
in
P0
P4
RESISTORS = 10 k
f
out
=
f
n
in
Q5
Q1
P1
P5
MC14516B
M.S.D.
+V
DD
W
Q6
Q2
P2
P6
Q7
Q3
P3
P7
C
out
BUFFER
f
out