基于单片机的电子秤设计原理图

PIU6706
R7
PIR701
PIR702
PIU704 2
PIU702
-
4
Res2 10K
-5V
Res2 20K
+5V
7
PIU407 PIU3403 +
PIU40 2
PIU402
-
4
CUOU44 OP07 PIU6406
-5V
PIR802
RCOR88
Res2
PIR801 20K
GND
UCOU22
P10 PIU2101
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Drawn By:
1
2
3
4
5
6
7
8
PIS1701
PIS1702
SW-PB
PIR1202
R16 R17 R18 R19
Res2 Res2 Res2 Res2
PIR12011 K PIR12011K PIR12011 K PIR12011K
SCO1S818
KNLEKYEY11
PIS?01
PIS?02
SW-PB SCO/S101
KNLEKYEY22
CROR44
Res2
Rc
Rb
PIR401 1.1K
PIR203
PIR602
CROR66
Res Adj2
PIR601 4K
CRO-R533V
PIR301 PIR302
Res2 20K
CROR55
PIR501
PIR502
Res2
20K +5V
GND
PIU70 PIU3703 +
7
CUOU77
COR7 OP07
PI2U12021
22
PIU2022
PI2U32023 PI2U42024 PI2U52025
26
PIU2026
PI2U72027 PI2U82028
来自百度文库
RNLSRS RNLWRW
SCLK LCDRST
KEY1 KEY2 KEY3 KEY4
VCC GND (RXD)P3.0 (TXD)P3.1 ALE/PROG PSEN
PIC602
1C0a0ppPFol2PIC701
Cap 100pF
CDOD33 Bridge1
PIC902 CCOC99
PIC801 CCOC88
PIVR20
PIC901
Cap 100pF
PIC802
Cap Pol2 100pF
PIC102
PIC101 PIC102
CCO1C111
Cap
Pol2PIC10 1
GND
Volt Reg
Speaker
D
D
Title 吴NL鉴Îâ鹰¼ø基Ó¥于»ùÓ单Úµ片¥Æ机¬»的úµ电ĵ子ç×秤Ó³的Óµ设ÄÉ计è¼原ÆÔ理-À图íͼ
Size
Number
A3
2N0L210414.202.20255
Revision
吴NLÎ鉴â¼鹰øÓ¥
Date:
2014/2/27
Sheet of
Optoisolator1
GND
CLOSLS11
PILS202 PILS201
VCC R22
PIU804
PIR1701
PIR1702
Res2
PIU803
1K
RCO2R244
PIR2201
PIR2202
Res2
1K
PID201
D6
PID202 LED0
KNLEKYEY44
PIS?01
PIS?02
SW-PB
PIC1701
CCOC1177 Cap 100pF
PIC1601 PIC1602
CCOC1166 Cap Pol2 100pF
PIVR403
VouN7tL9791122Vin
PIVR401
PIC1901 PIC1902
PIC1802
CCO1C199 Cap
Pol2PIC1801
100pF
CCOC1188 Cap 100pF
CCOC1100 Cap 100pF
PIVR203 VouN7tL9790055Vin PIVR201 100pF
VCORVR22
Volt Reg
PID101 PID102
LED1 CDOD22
CRO1R155
PIR1101
PIR1102
Res2
1K
GND
GND GND
PID201 PID202
LED1
PIR1002 PIR1001
CROR114
1K
GND
Res2 10K
GND
Res2
PIR12011K
SCO2S2
SCO3S3
Res2
PIR13011K SCO4S4
Res2
PIR14011K SCO5S5
Res2
PIR15011K
DCOD11
VCC
C
RPot
~22P0IVF101CFOF11
Fuse 1 PIF102
PI3U92039NPL0P000 PPPPIIII3333UUUU87652222000033335687NNNPPPPLLL0000PPP0001234234 PPPIII333UUU432222000333243NNPPPLL000PP0056767
NLLCDRST (A8)P2.0
(A9)P2.1 (A10)P2.2 (A11)P2.3 (A12)P2.4 (A13)P2.5 (A14)P2.6 (A15)P2.7
VCC
PIU152012 PIU156016
PIU256026 PIU257027 PIU258028
1
PIU501
PIU2502 PIU3503
4
PIU504
11
PIU5011
6
PIU506
22
PIU5022
START ALE
GND
13
PIU5013
B
74LS02
9
PIU509
7
PIU507
OE EOC
PIU166016 PIU169019
1
PIU601
PI1U16011
OE LE 74LS373
74LS373
GND
UCO8UA8A
PIU2802 1
3
PIU803
PIU1801
74LS02
UCO8UB8B
5
PIU805
1 PIU6806
4
PIU804
P1IU05010 CLOCK
REF(+)
23
PIU5023
CCOC1122 Cap 100pF
PIC1301 PIC1302
CCOC1133 Cap Pol2 100pF
GND
PIVR302
Volt Reg
PIC1401 CCO1C144
PIC1502 CCOC1155
PIC1402
1C0a0ppPFol2PIC1501
Cap 100pF
PIVR402 PIC1702
SSCOW7S7 -PB
SSCOW8S8 -PB
PIS601
PIS602 PIS701
PIS702 PIS801
PIS802
SSCOW1S100-PB
SSCOW1S111-PB
SSCOW1S212-PB
PIS1001
PIS1002 PIS1101
PIS1102 PIS1201
PIS1202
SSCOW1S144-PB
PIS001
PIS002
SSCOW1S919-PB
KNLEKYEY33
PIS?01
PIS?02
SSCOW2S020-PB
C
GND GND
N~L2~22200VV
PID304
PID302
PID30
VCORVR33
PIC1202
PIVR301 VinN7L878112V2 out PIVR303
PIC1201
18
PIU2018
XTAL1 XTAL2
PIU2909 RST
17
PIU2017
PIU216016
P3.7(RD) P3.6(WR)
(AD0)P0.0
NLP01 (AD1)P0.1
(AD2)P0.2 (AD3)P0.3 (AD4)P0.4
NLP05 (AD5)P0.5
(AD6)P0.6 (AD7)P0.7
VCORVR44
PID401 PID402
LED1 CDOD55
CRO2R211
PIR1701
PIR1702
Res2
1K
GND
GND GND
PID501 PID502
LED1
RCO2R233
PIR1801
PIR1802
Res2
1K
NPL1P100
+12V
GND GND
-12V
UCO1U08
SPK
PIU801 PIU802
40
PIU2040
PI2U02020 PI1U02010
11
PIU2011
30
PIU2030
PI2U92029
CUOU99
12864 N液LÒ晶º¾显§ÏÔ示ʾ模Ä£块¿é（£¨´串®¿口Ú£）©
AT89S52
VSS VDD V0/NC RS RW EC DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 CS1/PSB CS2/NC RST VEE/NC LED+ LED-
RCO2R200
PIR1601
PIR1602
Res2
1K
DCOD44
NPL1P177
+5V
NPL1P166
NPL1P155
GND GND
NPL1P144 NPL1P133 -5V NPL1P122 NPL1P111
PIS201
PIS202 PIS301
PIS302 PIS401
PIS402
SSCOW6S6 -PB
P2IU45024 P2IU55025
ADDC ADDB ADDA
REF(-)
IN1 IN2
IN3
P2IU15021 P2IU05020
19
PIU5019
18
PIU5018
PIU8508 P1IU55015 14
PIU5014
17
PIU5017
D7 D6 D5 D4 D3 D2 D1 D0
IN4 IN5 IN6 IN7 ADC0809
GND
NLSCLK
VCC
GND
Cap Pol2
10uf
SCO1S1
PIS101
PIS102
SW-PB
VCC
ADC0809
PIR1202
PIR1302
PIR1402
PIR1502
VCC PIR103
CROR99
RCO1R100
RCO1R111
RCO1R212
RCO1R133
PIR901
PIR902
GND
VCC
CCOC33
PIC301 PIC302
VCC A
1 CLR PRE 8
PIU308
UCO3U3
PIU2302 D
Q PIU630674LS74
PIU3303 CLK
Q PIU5305
UCOU55
PIU7307 GND Vcc PIU134014
GND PIU301
UCOU66
PIU3603 4
PID301
VCORVR11
PIC402
PIVR101 VinN7L878005V5 out PIVR103
PIC401
CCOC44 Cap 100pF
PIC501 PIC502
CCOC55 Cap Pol2 100pF
GND
PIVR102
Volt Reg
PIC601 CCOC66
PIC702 CCOC77
PIU604
PIU7607 PIU8608
13
PIU6013
14
PIU6014
PI1U76017 PI1U86018
D0 D1 D2 D3 D4 D5 D6 D7
Q0 Q1 Q2 Q3 Q4 Q5 Q6 Q7
PIU2602 5
PIU605
PIU6606 PIU9609
12
PIU6012
15
PIU6015
1 2 3 4 RS 5 RW 6 SCLK 7 8 9 10 11 12 13 14 15 16 17 LCDRST18 19 20
PIU901 PIU902 PIU903 PIU904 PIU905 PIU906 PIU907 PIU908 PIU90 PIU901 PIU901 PIU9012 PIU9013 PIU9014 PIU9015 PIU9016 PIU9017 PIU9018 PIU9019 PIU902
SSCOW1S515-PB
SSCOW1S616-PB
PIS1401
PIS1402 PIS1501
PIS1502 PIS1601
PIS1602
SW-PB
SW-PB
SW-PB
PIS501
PIS502
SSCOW9S9 -PB
PIS901
PIS902
SSCOW1S133-PB
PIS1301
PIS1302
SSCOW1S177-PB
33pF YCOY11
PIY10 CCOC22
1
XTAL
PIC201 PIC202
PIU213013 12
PIU2012
P3.3(INT1) P3.2(INT0)
SPPKIU215015 PIU214014
P3.5(T1) P3.4(T0)
PIU231031 EA/VPP
Cap 33pF
19
PIU2019
P11 PIU2202
P12 PIU2303
P13
4
PIU204
P14 PIU2505
P15 PIU2606
P16 PIU2707
P17
8
PIU208
P1.0(T2) P1.1(T2EX) P1.2 P1.3 P1.4 P1.5(MOSI) P1.6(MISO) P1.7(SCK)
CCOC11
2
PIY102 PIC101 PIC102 Cap
1
2
3
4
5
6
7
8
+5V
A
7
PIU107 CUOU11
PIU3103 +
OP07 PIU6106
RCOR11
PIR101 PIR102
B
VCC
PIU104 PIU2102 -
4
PIR201 CROR22
N压LÑ力¹Á传¦´«感¸Ð器Æ÷ Rd Ra Res PBIR402ridge
PIR204
1K
PIR202