Student

Frequency counter 7seg TMR1
CN1

Brown
Purple

VDD

Green

GND

Orange

1

VPP/MCLR

PGD

2

White

3
4

PGC

Blue

RD[0:7]

5

kingbright Common Cathode

PGMRD0

7

RD2

U1

11

RD1

5V

4

1

R1
10k
D1

MCLRn/Vpp

RB7/PGD

40

RD3

2

2

MCLRn

RA0/AN0

RB6/PGC

39

RD4

1

3

RB5

38

RD5RA2/AN2/VREF-

RB4

37

RD6

5

5

RA3/AN3/VREF+

RB3/PGM

36

RD7

3

R2

1N4148
Stop high prog
voltscausing
contention. (use
shottkey herefor
more volts)

RA0/AN1

104
C1
10u
16V

kingbright Common Cathode

SEG1

6

6

RA4/TOCKI

RB2

SEG2
a

b

RD1

7

RD2

4

d

RD3

2

e

RD4

1

RD5

10

g

RD6

5

dpRD7

3

f

b

f

RA5/AN4/SSn

RB1

RE0

8

RE0/AN5/RDn

RB0/I

g

RE1

9

RE1/AN6/WRn

Vdd2

32

10

RE2/AN7/CSn

Vss2

Vdd1

RD7/PSP7

30

12Vss1

RD6/PSP6

29

RD6

4MHz

13

OSC1/CLKIN

RD5/PSP5

28

RD5

14

OSC2/CLKOUT

RD4/PSP4

27

RD4

15

RC0/T1OSO/T1CKI

RC7/RX/DT

26

16

RC1/T1OSI/CCP2RC6/TX/CK

25

17

RC2/CCP1

RC5/SDO

24

18

RC3/SCK/SCL

RC4/SDI/SDA

23

RD0

19

RD0/PSP0

RD3/PSP3

22

RD3

RE1

14

RD1

20

RD1/PSP1

RD2/PSP221

RD2

RE0

15

f

Use a fixed value
capacitor (27pF)
if you don't want
to tune the
operating
frequency.

e

c

e

c

e

g

c

e

5V

C4
65p

C2
27p

RC2IP2
Freq. in

RC0

SEL1

d

d

d

COM

d

COM

9

8

SEL2

SEL3

5V
16
Vdd
13

CP1

Q0

CP0

Q1

MR

Q2
Q3

Frequency input
Q4

RD[0:7]

Q5
Q6Q7

D2

Q8

RE[1..0]

Q9
DIV10
Vss
4017

8

3
2

SEL1

4

SEL2

7

SEL3

10

SEL4

1

SEL5

5

SEL6

6

SEL7

9

SEL8

11
12

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