This document contains diagrams and descriptions of an electronic circuit. The circuit includes a microcontroller, LCD display, relay, power supply components, and buttons/switches. The circuit controls the LCD display and relay based on input from the buttons/switches. Power is supplied from both an external power source and batteries.

1. ~~~~ nnnntttthhhhoooonnnnggggkkkkttttvvvv@@@@ggggmmmmaaaaiiiillll....ccccoooommmm ~~~~
1/4 Mạch Điện 28/05/14
DATN 05/2014
Pin in
HI
0
5 VDC
10K
Button
HI
1
2

2. ~~~~ nnnntttthhhhoooonnnnggggkkkkttttvvvv@@@@ggggmmmmaaaaiiiillll....ccccoooommmm ~~~~
2/4 Mạch Điện 28/05/14
TXT
SIM_CLKK
13
26
24
22
20
18
16
1
3
5
7
9
11
6
2
4
8
10
12
25
27
21
23
29
31
33
35
37
39
41
43
45
47
49
51
53
55
57
59
14
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60
15
17
19
TEMB_BAT
KBC4
KBC3
KBC2
KBC1
KBC0
NETLIGHT
VBAT
VBAT
VBAT
VBAT
VBAT
VCHG
GND
GND
GND
GND
GND
ADC0
SIM_VDD
SIM_RST
GPIOO
BUZZER
SIM_DATA
SIM_CLK
SIM_PRESENT
GPIO1
DCD
DTR
RXD
TXD
RTS
CTS
RI
AGND
SPK1P
SPK1N
SPK2P
SPK2N
VRTC
KBR0
KBR1
KBR2
KBR3
KBR4
DISP_CS
DISP_CLK
DISP_DATA
DISP_D/C
DISP_RST
DBG_RXD
DBG_TXD
AGND
MIC1P
MIC1N
MIC2P
MIC2N
VDD_EXT
PWR_KEY
STATUS
SIM_RST
SIM_DATA
SIM_VDD
STATUS
PWR_KEY
RXT
VBAT
NETLIGHT
C1
0
LED
5 VDC
12
C3
+
R2
Button
CRYSTAL
PVN1
PIC16F877A
2
3
4
5
6
7
33
34
35
36
37
38
39
40
15
16
17
18
23
24
25
26
19
20
21
22
27
28
29
30
13
14
32
11
31
12
1
8
9
10
RA0/AN0
RA1/AN1
RA2/AN2/VREF-/CVREF
RA3/AN3/VREF+
RA4/T0CKI/C1OUT
RA5/AN4/SS*/C2OUT
RB0/INT
RB1
RB2
RB3/PGM
RB4
RB5
RB6/PGC
RB7/PGD
RC0/T1OSO/T1CKI
RC1/T1OSI/CCP2
RC2/CCP1
RC3/SCK/SCL
RC4/SDI/SDA
RC5/SDO
RC6/TX/CK
RC7/RX/DT
RD0/PSP0
RD1/PSP1
RD2/PSP2
RD3/PSP3
RD4/PSP4
RD5/PSP5
RD6/PSP6
RD7/PSP7
OSC1/CLKIN
OSC2/CLKOUT
VDD
VDD
VSS
VSS
MCLR*/VPP
RE0/RD*/AN5
RE1/WR*/AN6
RE2/CS*/AN7
-
R1
C2
3
4

3. ~~~~ nnnntttthhhhoooonnnnggggkkkkttttvvvv@@@@ggggmmmmaaaaiiiillll....ccccoooommmm ~~~~
3/4 Mạch Điện 28/05/14
10uF
VEXT
10uF
1
7
16
12
11
15
6
3
4
5
14
10
9
13
8
2
C1+
T2OUT
VCC
R1OUT
T1IN
GND
VS-
C1-
C2+
C2-
T1OUT
T2IN
R2OUT
R1IN
R2IN
VS+10uF
10uF
1
2
4
5
3
22uF
VBAT
4,7K
2.2K
VEXT
PWR_KEY
BC547
NETLIGHT
STATUS
VBAT
NETLIGHT
330
VEXT
100uF
4K7
47K
4K7
VEXT
47K
STATUS
330
BC547
10K
0
220 VAC
C3
0
+-
~
~
C1 C4
0
Vout
12
U2 78XX/SIP
1 3
2
VIN VOUT
GND
1
2
3
4
C2
5
6
7
8

4. ~~~~ nnnntttthhhhoooonnnnggggkkkkttttvvvv@@@@ggggmmmmaaaaiiiillll....ccccoooommmm ~~~~
4/4 Mạch Điện 28/05/14
12 VDC
0
1K
1N4148
PC817
12
43
HI
LED
0
LS1
Relay
3
5
4
1
2
C1815
NPN BCE
4K7
VAC out
12
HI
AC
330VDC in
R1
POT
LCD
LCD16*2
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Vss
Vdd
V0
RS
R/W
E
D0
D1
D2
D3
D4
D5
D6
D7
A
K
DB4 ...... DB7
1
2
3
4
VCC
RS - E
1
2
0
HI
9
10
11