LCD StopWatch with MIcrocontroller PIC16F628A

LCD 1/1000 Stopwatch
with
PIC16F628A microcontroller
and
LCD Module Epson mod. EA-D16015 PR-1
©2014 by Valter Narcisi – San Benedetto del Tronto (AP) - ITALY
http://www.narcisivalter.it/progetti/cronometro-LCD.html
[email protected]
VCC
C1
0.1u
D
R7
10k
R6
10k
R5
10k
D
R4
10k
M1
+V
1N4148
M2
12 Vcc
Power Supply
9 Vcc
Battery
R8
22k
D2
+
IN
1N4001
+
RX* 1k
C5
47u - 25V
U4
78L05
4
VCC
OUT
3
+
COM
D3
M3
C6
10u - 16V
+
10
4,95 Vcc
(Only with
12v Power Supply)
11
1N4001
C
1
2
3 ICSP
4
5
14
D1
8
RA5/MCLR
RA4
RB4
U1
PIC16F628A
RB5
13
RB7
12
RB6
16
RA7
15
RA6
2
RA3
1
RA2
18
RA1
17
RA0
RB2
C
RX* only if use a 9V rechargeable battery
Stop/
Interm.
RB3
Reset
6
VCC
RB1
7
T1
10k
Contr.
5
C2
RB0/INT
9
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Start
S3
GND
VCC
ADJ
RS
RW
EN
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
LED+ (A)
LED- (K)
R9
15k
S2
GND
S1
0.1u
R2
47
Epson EA-D16015 PR-1
16
24MHz
VCC
9
B
XTAL
24 MHz
Q4
Q5
U2
M74HC4060B1 Q6
Q7
10
Rext
Q8
Q9
Q10
Q12
11
Rs
Q13
Q14
R3
4M7
C4
47p
CV
15-70p
Cext
GND
Reset
8
12
7
5
4 375 kHz
6
14
13
15
1
1
2
2
3
12
VCC
C3
LCD
LCD Module 16x1
0.1u
1000 Hz
24
R1
VCC
Input
Output
U3
CD4059B
EL
23
Q1
BC237
10k
B
Ka
14
Kb
13
Kc
11
GND
J1 J2 J3 J4 J5 J6 J7 J8 J9 J10 J11 J12 J13 J14 J15 J16
3
4
5
6 22 21 20 19 18 17 16 15 10
9
8
7
Author:
Valter Narcisi - San Benedetto del Tronto (AP)
Project:
Cronometro Millesimale LCD a Microcontrollore
Year:
2014
A
A
Size:
Note:
—
DWG no.
1
Rev.:
1
Scale:
1:1
Sheet:
http://www.narcisivalter.it/progetti/cronometro-LCD.html
1 of 1
EXTERNAL SWITCHES
PCB Stopwatch
+Vcc
2x
1N4148
470
470
2x
1N4148
1/1000 LCD Stopwatch with MCU - ©2014 by Valter Narcisi [email protected]
- http://www.narcisivalter.it/progetti/cronometro-LCD.html
WIRING
Power Supply
12 Vcc
ON-OFF
Double Switch
1
16
1
Ni-Cd
Ni-MH
TP
24 MHz
T1
LCD Contrast
CV
24 Mhz adj.
START
RESET
1/1000 LCD Stopwatch with MCU - ©2014 by Valter Narcisi [email protected]
STOP / Intermediate
- http://www.narcisivalter.it/progetti/cronometro-LCD.html
LCD Stopwatch Component list
Designator
Component
C1
C2
C3
C4
C5
C6
R1
R2
R3
R4
R5
R6
R7
R8
R9
RX*
T1
CV
D1
D2
D3
XTAL
Q1
U1
U2
U3
U4
LCD
S1
S2
S3
M1
M2
M3
0.1u
0.1u
0.1u
47p
47u - 25V
10u - 16V
10k
47
4M7
10k
10k
10k
10k
22k
15k
1k
10k Trimmer
15-70p
1N4148 or equivalent
1N4001 or equivalent
1N4001 or equivalent
24 MHz Xtal
BC237
PIC16F628A
M74HC4060B1
HEF4059BP (CD4059)
78L05 (100mA)
LCD Module Epson EA-D16015 PR-1
N.A. switch
N.A. switch
N.A. switch
5 way (for ICSP)
2 way terminal
2 way terminal
http://www.narcisivalter.it/progetti/cronometro-LCD.html

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