DS1302时钟电路
C1
P0C101
P0C102
C2
P0C201
P0C202
C3
P0C301 P0C302
C4 P0C401
P0C402
C5
P0C501
P0C502
C6
P
0C
60
1
P0C602
D1
P0D101
P
0D
10
2
K1
P0K101 P0K102
P0K103 P0K104
K2
P0K201 P0K202 P0K203
P0K204 P0K205 P0K206
P1
P
0P
10
1
P0...
C1
P0C101
P0C102
C2
P0C201
P0C202
C3
P0C301 P0C302
C4 P0C401
P0C402
C5
P0C501
P0C502
C6
P
0C
60
1
P0C602
D1
P0D101
P
0D
10
2
K1
P0K101 P0K102
P0K103 P0K104
K2
P0K201 P0K202 P0K203
P0K204 P0K205 P0K206
P1
P
0P
10
1
P0P102
P2
P0P201
P0P202
P3
P0P301
P
0P
30
2
P0P303
P
0P
30
4
P0P305
P0P306
P
0P
30
7
P0P308
P0P309
P4
P0P401
P
0P
40
2
P0P403
P0P404
P
0P
40
5
P0P406
P0P407
P0P408
P0P409
P
0P
40
10
P0P4011
P0P4012
P
0P
40
13
P0P4014
P0P4015
P0P4016
P5
P0P501
P0P502
P6 P0P601
P0P602
P0P603
R1
P
0R
10
1
P0R102
R2
P
0R
20
1
P0R202
R3
P0R301 P0R302 P0R303
R4
P0R401 P0R402
R5
P0R501 P0R502
S1
P0S101 P0S102
P0S103 P0S104
S2
P0S201 P0S202
P0S203 P0S204
S3
P0S301 P0S302
P
0S
30
3
P0S304
U1
P0U100
P0U101
P
0U
10
2
P0U103
P
0U
10
4
U2
P0U201
P0U202
P
0U
20
3
P0U204
P0U205
P0U206
P0U207
P
0U
20
8
P0U209
P0U2010
P
0U
20
11
P0U2012
P
0U
20
13
P0U2014
P0U2015
P
0U
20
16
P0U2017
P0U2018
P0U2019
P0U2020 P0U2021
P0U2022
P0U2023
P0U2024
P0U2025
P0U2026
P0U2027
P0U2028
P0U2029
P0U2030
P0U2031
P0U2032
P0U2033
P0U2034
P0U2035
P0U2036
P0U2037
P0U2038
P0U2039
P0U2040
U3
P0U301
P0U302
P0U303
P0U304
P
0U
30
5 P0U306
P
0U
30
7 P0U308
Y1
P0Y101
P
0Y
10
2
Y2
P
0Y
20
1
P0Y202
P
0P
30
2
P0P407
P0U2039
P0P303
P0P408
P0U2038
P
0P
30
4
P0P409
P0U2037
P0P305
P
0P
40
10
P0U2036
P0P306
P0P4011
P0U2035
P
0P
30
7
P0P4012
P0U2034
P0P308
P
0P
40
13
P0U2033
P0P309
P0P4014
P0U2032
P0C102
P0C202
P0C401
P0C501 P0
C6
01
P
0D
10
2
P0P102
P0P202
P0P401
P0P4016
P
0R
20
1
P0R302
P0S103
P0S201
P0S301
P
0U
10
4
P0U2020
P0U304
P0P406
P0U2023
P0P602 P0U207
P0P601 P0U206
P0C101
P0U302
P0Y101
P0C201
P0U303 P
0Y
10
2
P0C302
P0R102 P0R202 P0U209
P0C402
P0U2018 P0Y202
P0C502
P0U2019
P
0Y
20
1
P0D101
P0R402
P0K104
P
0R
10
1
P0K204
P0R401
P0P201
P0U308
P0P403
P0R301 P0R303
P0P4015
P0R502
P0S102
P0U2012
P0S204
P
0U
20
13
P0S304
P0U2014
P
0U
20
3
P
0U
30
7
P0U204
P0U306
P0U205
P
0U
30
5
P0P404
P0U2021
P
0P
40
5
P0U2022
P0P501 P0U2010
P0P603
P
0U
20
8
P0P502
P
0U
20
11
P0C301
P0C602
P0K101
P0K201 P0K202 P0K203
P0K205 P0K206
P
0P
10
1
P0P301
P
0P
40
2
P0R501
P0U101
P0U2031
P0U2040 P0U301
1
1
2
2
3
3
4
4
D D
C C
B B
A A
Title
Number RevisionSize
A4
Date: 2009-4-24 Sheet of
File: D:\My Documents\..\DS1302.SchDoc Drawn By:
G
N
D
20
V
C
C
40
P1.01
P1.12
P1.23
P1.34
P1.45
P1.56
P1.67
P1.78
RST9
P3.0/RXT10
P3.1/TXD11
P3.2/INT012
P3.3/INT113
P3.4/T014
P3.5/T115
P3.6/WR16
P3.7/RD17
X
2
18
X
1
19
P2.0 21
P2.1 22
P2.2 23
P2.3 24
P2.4 25
P2.5 26
P2.6 27
P2.7 28
PSEN 29
ALE/P 30
EA/VP31
P0.7 32
P0.6 33
P0.5 34
P0.4 35
P0.3 36
P0.2 37
P0.1 38
P0.0 39
U2
AT89S52 12
3
4
5
6
7
8
9
10
11
12
13
14
15
16
P4
Header 16
1
2
3
4
5
6
7
8
9
10K
P3
X12
X23
VCC2 1
GND4
RST5
I/O 6
SCLK7 VCC1 8
U3
DS1302
VCC 12
P2 power GND
4
VCC1
D-2
D+3
U1
usb
1
2
P1
Header 2
1K
R1
10K
R2
VCC
10uF
C3
11
22
33
4 4
5 5
6 6
K2
KEYS
VCC
D1
LED11K
R4
1
2
Y1
XTAL
12
Y2
XTAL
30PF
C4
30PF
C5
20PF
C1
20PF
C2
10K
R3
VCC
VCC
VCC
VCC
VCC
RS
RS
RW
RW
LCDEN
LCDEN
D0
D1
D2
D3
D4
D5
D6
D7
D0
D1
D2
D3
D4
D5
D6
D7
10 R5VCC
VCC
1
2
P5
Header 2
RXT
RXT
TXD
TXD
1
2
3
P6
Header 3
MOSI
MOSI
MISO
MISO
SCK
SCK
104
C6
11
22
3 3
4 4
S1
KEY
11
22
3 3
4 4
S2
KEY
11
22
3 3
4 4
S3
KEY
11
22
3 3
4 4
K1
KEY
P0C101 P0C102
P0C201 P0C202
P0C301 P0C302
P
0C
40
1
P
0C
40
2
P
0C
50
1
P
0C
50
2
P
0C
60
1
P
0C
60
2
P0D101 P0D102
P0K101
P0K102
P0K103
P0K104
P0K201
P0K202
P0K203
P0K204
P0K205
P0K206
P0P101
P0P102
P0P201 P0P202
P0P301
P0P302
P0P303
P0P304
P0P305
P0P306
P0P307
P0P308
P0P309
P0P401
P0P402
P0P403
P0P404
P0P405
P0P406
P0P407
P0P408
P0P409
P0P4010
P0P4011
P0P4012
P0P4013
P0P4014
P0P4015
P0P4016
P0P501
P0P502
P0P601
P0P602
P0P603
P0R101 P0R102
P0R201 P0R202
P0R301 P0R302
P
0R
30
3
P0R401 P0R402
P0R501 P0R502
P0S101
P0S102
P0S103
P0S104
P0S201
P0S202
P0S203
P0S204
P0S301
P0S302
P0S303
P0S304
P0U101
P0U102
P0U103
P0U104
P0U201
P0U202
P0U203
P0U204
P0U205
P0U206
P0U207
P0U208
P0U209
P0U2010
P0U2011
P0U2012
P0U2013
P0U2014
P0U2015
P0U2016
P0U2017
P
0U
20
18
P
0U
20
19
P
0U
20
20
P0U2021
P0U2022
P0U2023
P0U2024
P0U2025
P0U2026
P0U2027
P0U2028
P0U2029
P0U2030
P0U2031
P0U2032
P0U2033
P0U2034
P0U2035
P0U2036
P0U2037
P0U2038
P0U2039 P
0U
20
40
P0U301
P0U302
P0U303
P0U304
P0U305
P0U306
P0U307 P0U308
P
0Y
10
1
P
0Y
10
2
P0Y201 P0Y202
P0P302
P0P407
P0U2039 N0D0
N0D0
P0P303
P0P408
P0U2038 N0D1
N0D1
P0P304
P0P409
P0U2037 N0D2
N0D2
P0P305
P0P4010
P0U2036 N0D3
N0D3
P0P306
P0P4011
P0U2035 N0D4
N0D4
P0P307
P0P4012
P0U2034 N0D5
N0D5
P0P308
P0P4013
P0U2033 N0D6
N0D6
P0P309
P0P4014
P0U2032 N0D7
N0D7
P0C102
P0C202
P
0C
40
1
P
0C
50
1
P
0C
60
1
P0D102
P0P102
P0P202
P0P401
P0P4016
P0R201
P0R302
P0S101
P0S102
P0S201
P0S202
P0S301
P0S302
P0U104
P
0U
20
20
P0U304
P0P406
P0U2023 N0LCDEN
N0LCDEN
P0P602
P0U207 N0MISO
N0MISO
P0P601
P0U206 N0MOSI
N0MOSI
P0C101
P0U302
P
0Y
10
1
P0C201
P0U303
P
0Y
10
2
P0C302
P0R102
P0R202
P0U209
P
0C
40
2
P
0U
20
18
P0Y202
P
0C
50
2
P
0U
20
19
P0Y201
P0D101 P0R402
P0K103
P0K104
P0R101
P0K204
P0R401
P0P201
P0U308
P0P403 P0R301
P
0R
30
3
P0P4015 P0R502
P0S103
P0S104
P0U2012
P0S203
P0S204
P0U2013
P0S303
P0S304
P0U2014
P0U102
P0U103
P0U201
P0U202
P0U203 P0U307
P0U204
P0U306
P0U205
P0U305
P0U2015
P0U2016
P0U2017
P0U2024
P0U2025
P0U2026
P0U2027
P0U2028
P0U2029
P0U2030
P0P404
P0U2021 N0RS
N0RS
P0P405
P0U2022 N0RW
N0RW
P0P501
P0U2010 N0RXT
N0RXT
P0P603
P0U208 N0SCK
N0SCK
P0P502
P0U2011 N0TXD
N0TXD
P0C301
P
0C
60
2
P0K101
P0K102
P0K201
P0K202
P0K203
P0K205
P0K206
P0P101
P0P301
P0P402
P0R501
P0U101
P0U2031
P
0U
20
40
P0U301
N0D0
P0P302
P0P407
P0U2039
N0D1
P0P303
P0P408
P0U2038
N0D2
P0P304
P0P409
P0U2037
N0D3
P0P305
P0P4010
P0U2036
N0D4
P0P306
P0P4011
P0U2035
N0D5
P0P307
P0P4012
P0U2034
N0D6
P0P308
P0P4013
P0U2033
N0D7
P0P309
P0P4014
P0U2032
P0C102
P0C202
P
0C
40
1
P
0C
50
1
P
0C
60
1
P0D102
P0P102
P0P202
P0P401
P0P4016
P0R201
P0R302
P0S101
P0S102
P0S201
P0S202
P0S301
P0S302
P0U104
P
0U
20
20
P0U304
N0LCDEN
P0P406
P0U2023
N0MISO
P0P602
P0U207
N0MOSI
P0P601
P0U206
P0C101
P0U302
P
0Y
10
1
P0C201
P0U303
P
0Y
10
2
P0C302
P0R102
P0R202
P0U209
P
0C
40
2
P
0U
20
18
P0Y202
P
0C
50
2
P
0U
20
19
P0Y201
P0D101 P0R402
P0K103
P0K104
P0R101
P0K204
P0R401
P0P201
P0U308
P0P403 P0R301
P
0R
30
3
P0P4015 P0R502
P0S103
P0S104
P0U2012
P0S203
P0S204
P0U2013
P0S303
P0S304
P0U2014
P0U102
P0U103
P0U201
P0U202
P0U203 P0U307
P0U204
P0U306
P0U205
P0U305
P0U2015
P0U2016
P0U2017
P0U2024
P0U2025
P0U2026
P0U2027
P0U2028
P0U2029
P0U2030
N0RS
P0P404
P0U2021
N0RW
P0P405
P0U2022
N0RXT
P0P501
P0U2010
N0SCK
P0P603
P0U208
N0TXD
P0P502
P0U2011
P0C301
P
0C
60
2
P0K101
P0K102
P0K201
P0K202
P0K203
P0K205
P0K206
P0P101
P0P301
P0P402
P0R501
P0U101
P0U2031
P
0U
20
40
P0U301
Schematics
DS1302.SchDoc (DS1302)
Components
C1
C1-1
C1-2
C2
C2-1
C2-2
C3
C3-1
C3-2
C4
C4-1
C4-2
C5
C5-1
C5-2
C6
C6-1
C6-2
D1
D1-1
D1-2
K1
K1-1
K1-2
K1-3
K1-4
K2
K2-1
K2-2
K2-3
K2-4
K2-5
K2-6
P1
P1-1
P1-2
P2
P2-1
P2-2
P3
P3-1
P3-2
P3-3
P3-4
P3-5
P3-6
P3-7
P3-8
P3-9
P4
P4-1
P4-2
P4-3
P4-4
P4-5
P4-6
P4-7
P4-8
P4-9
P4-10
P4-11
P4-12
P4-13
P4-14
P4-15
P4-16
P5
P5-1
P5-2
P6
P6-1
P6-2
P6-3
R1
R1-1
R1-2
R2
R2-1
R2-2
R3
R3-1
R3-2
R3-3
R4
R4-1
R4-2
R5
R5-1
R5-2
S1
S1-1
S1-2
S1-3
S1-4
S2
S2-1
S2-2
S2-3
S2-4
S3
S3-1
S3-2
S3-3
S3-4
U1
U1-1
U1-2
U1-3
U1-4
U2
U2-1
U2-2
U2-3
U2-4
U2-5
U2-6
U2-7
U2-8
U2-9
U2-10
U2-11
U2-12
U2-13
U2-14
U2-15
U2-16
U2-17
U2-18
U2-19
U2-20
U2-21
U2-22
U2-23
U2-24
U2-25
U2-26
U2-27
U2-28
U2-29
U2-30
U2-31
U2-32
U2-33
U2-34
U2-35
U2-36
U2-37
U2-38
U2-39
U2-40
U3
U3-1
U3-2
U3-3
U3-4
U3-5
U3-6
U3-7
U3-8
Y1
Y1-1
Y1-2
Y2
Y2-1
Y2-2
Nets
D0
Pins
P3-2
P4-7
U2-39
NetLabels
D0
D0
D1
Pins
P3-3
P4-8
U2-38
NetLabels
D1
D1
D2
Pins
P3-4
P4-9
U2-37
NetLabels
D2
D2
D3
Pins
P3-5
P4-10
U2-36
NetLabels
D3
D3
D4
Pins
P3-6
P4-11
U2-35
NetLabels
D4
D4
D5
Pins
P3-7
P4-12
U2-34
NetLabels
D5
D5
D6
Pins
P3-8
P4-13
U2-33
NetLabels
D6
D6
D7
Pins
P3-9
P4-14
U2-32
NetLabels
D7
D7
GND
C1-2
C2-2
C4-1
C5-1
C6-1
D1-2
P1-2
P2-2
P4-1
P4-16
R2-1
R3-2
S1-1
S1-2
S2-1
S2-2
S3-1
S3-2
U1-4
U2-20
U3-4
LCDEN
Pins
P4-6
U2-23
NetLabels
LCDEN
LCDEN
MISO
Pins
P6-2
U2-7
NetLabels
MISO
MISO
MOSI
Pins
P6-1
U2-6
NetLabels
MOSI
MOSI
NetC1_1
C1-1
U3-2
Y1-1
NetC2_1
C2-1
U3-3
Y1-2
NetC3_2
C3-2
R1-2
R2-2
U2-9
NetC4_2
C4-2
U2-18
Y2-2
NetC5_2
C5-2
U2-19
Y2-1
NetD1_1
D1-1
R4-2
NetK1_3
K1-3
K1-4
R1-1
NetK2_4
K2-4
R4-1
NetP2_1
P2-1
U3-8
NetP4_3
P4-3
R3-1
R3-3
NetP4_15
P4-15
R5-2
NetS1_3
S1-3
S1-4
U2-12
NetS2_3
S2-3
S2-4
U2-13
NetS3_3
S3-3
S3-4
U2-14
NetU1_2
U1-2
NetU1_3
U1-3
NetU2_1
U2-1
NetU2_2
U2-2
NetU2_3
U2-3
U3-7
NetU2_4
U2-4
U3-6
NetU2_5
U2-5
U3-5
NetU2_15
U2-15
NetU2_16
U2-16
NetU2_17
U2-17
NetU2_24
U2-24
NetU2_25
U2-25
NetU2_26
U2-26
NetU2_27
U2-27
NetU2_28
U2-28
NetU2_29
U2-29
NetU2_30
U2-30
RS
Pins
P4-4
U2-21
NetLabels
RS
RS
RW
Pins
P4-5
U2-22
NetLabels
RW
RW
RXT
Pins
P5-1
U2-10
NetLabels
RXT
RXT
SCK
Pins
P6-3
U2-8
NetLabels
SCK
SCK
TXD
Pins
P5-2
U2-11
NetLabels
TXD
TXD
VCC
C3-1
C6-2
K1-1
K1-2
K2-1
K2-2
K2-3
K2-5
K2-6
P1-1
P3-1
P4-2
R5-1
U1-1
U2-31
U2-40
U3-1
Nets
D0
NetLabels
D0
Pins
P3-2
P4-7
U2-39
D1
NetLabels
D1
Pins
P3-3
P4-8
U2-38
D2
NetLabels
D2
Pins
P3-4
P4-9
U2-37
D3
NetLabels
D3
Pins
P3-5
P4-10
U2-36
D4
NetLabels
D4
Pins
P3-6
P4-11
U2-35
D5
NetLabels
D5
Pins
P3-7
P4-12
U2-34
D6
NetLabels
D6
Pins
P3-8
P4-13
U2-33
D7
NetLabels
D7
Pins
P3-9
P4-14
U2-32
GND
C1-2
C2-2
C4-1
C5-1
C6-1
D1-2
P1-2
P2-2
P4-1
P4-16
R2-1
R3-2
S1-1
S1-2
S2-1
S2-2
S3-1
S3-2
U1-4
U2-20
U3-4
LCDEN
NetLabels
LCDEN
Pins
P4-6
U2-23
MISO
NetLabels
MISO
Pins
P6-2
U2-7
MOSI
NetLabels
MOSI
Pins
P6-1
U2-6
NetC1_1
C1-1
U3-2
Y1-1
NetC2_1
C2-1
U3-3
Y1-2
NetC3_2
C3-2
R1-2
R2-2
U2-9
NetC4_2
C4-2
U2-18
Y2-2
NetC5_2
C5-2
U2-19
Y2-1
NetD1_1
D1-1
R4-2
NetK1_3
K1-3
K1-4
R1-1
NetK2_4
K2-4
R4-1
NetP2_1
P2-1
U3-8
NetP4_3
P4-3
R3-1
R3-3
NetP4_15
P4-15
R5-2
NetS1_3
S1-3
S1-4
U2-12
NetS2_3
S2-3
S2-4
U2-13
NetS3_3
S3-3
S3-4
U2-14
NetU1_2
U1-2
NetU1_3
U1-3
NetU2_1
U2-1
NetU2_2
U2-2
NetU2_3
U2-3
U3-7
NetU2_4
U2-4
U3-6
NetU2_5
U2-5
U3-5
NetU2_15
U2-15
NetU2_16
U2-16
NetU2_17
U2-17
NetU2_24
U2-24
NetU2_25
U2-25
NetU2_26
U2-26
NetU2_27
U2-27
NetU2_28
U2-28
NetU2_29
U2-29
NetU2_30
U2-30
RS
NetLabels
RS
Pins
P4-4
U2-21
RW
NetLabels
RW
Pins
P4-5
U2-22
RXT
NetLabels
RXT
Pins
P5-1
U2-10
SCK
NetLabels
SCK
Pins
P6-3
U2-8
TXD
NetLabels
TXD
Pins
P5-2
U2-11
VCC
C3-1
C6-2
K1-1
K1-2
K2-1
K2-2
K2-3
K2-5
K2-6
P1-1
P3-1
P4-2
R5-1
U1-1
U2-31
U2-40
U3-1
PCBs
DS1302.pcb
Multilayer Composite Print
Components
C1
C1-1
C1-2
C2
C2-1
C2-2
C3
C3-1
C3-2
C4
C4-1
C4-2
C5
C5-1
C5-2
C6
C6-1
C6-2
D1
D1-1
D1-2
K1
K1-1
K1-2
K1-3
K1-4
K2
K2-1
K2-2
K2-3
K2-4
K2-5
K2-6
P1
P1-1
P1-2
P2
P2-1
P2-2
P3
P3-1
P3-2
P3-3
P3-4
P3-5
P3-6
P3-7
P3-8
P3-9
P4
P4-1
P4-2
P4-3
P4-4
P4-5
P4-6
P4-7
P4-8
P4-9
P4-10
P4-11
P4-12
P4-13
P4-14
P4-15
P4-16
P5
P5-1
P5-2
P6
P6-1
P6-2
P6-3
R1
R1-1
R1-2
R2
R2-1
R2-2
R3
R3-1
R3-2
R3-3
R4
R4-1
R4-2
R5
R5-1
R5-2
S1
S1-1
S1-2
S1-3
S1-4
S2
S2-1
S2-2
S2-3
S2-4
S3
S3-1
S3-2
S3-3
S3-4
U1
U1-0
U1-1
U1-2
U1-3
U1-4
U2
U2-1
U2-2
U2-3
U2-4
U2-5
U2-6
U2-7
U2-8
U2-9
U2-10
U2-11
U2-12
U2-13
U2-14
U2-15
U2-16
U2-17
U2-18
U2-19
U2-20
U2-21
U2-22
U2-23
U2-24
U2-25
U2-26
U2-27
U2-28
U2-29
U2-30
U2-31
U2-32
U2-33
U2-34
U2-35
U2-36
U2-37
U2-38
U2-39
U2-40
U3
U3-1
U3-2
U3-3
U3-4
U3-5
U3-6
U3-7
U3-8
Y1
Y1-1
Y1-2
Y2
Y2-1
Y2-2
Nets
D0
P3_2
P4_7
U2_39
D1
P3_3
P4_8
U2_38
D2
P3_4
P4_9
U2_37
D3
P3_5
P4_10
U2_36
D4
P3_6
P4_11
U2_35
D5
P3_7
P4_12
U2_34
D6
P3_8
P4_13
U2_33
D7
P3_9
P4_14
U2_32
GND
C1_2
C2_2
C4_1
C5_1
C6_1
D1_2
P1_2
P2_2
P4_1
P4_16
R2_1
R3_2
S1_3
S2_1
S3_1
U1_4
U2_20
U3_4
LCDEN
P4_6
U2_23
MISO
P6_2
U2_7
MOSI
P6_1
U2_6
NetC1_1
C1_1
U3_2
Y1_1
NetC2_1
C2_1
U3_3
Y1_2
NetC3_2
C3_2
R1_2
R2_2
U2_9
NetC4_2
C4_2
U2_18
Y2_2
NetC5_2
C5_2
U2_19
Y2_1
NetD1_1
D1_1
R4_2
NetK1_2
K1_4
R1_1
NetK2_4
K2_4
R4_1
NetP2_1
P2_1
U3_8
NetP4_3
P4_3
R3_1
R3_3
NetP4_15
P4_15
R5_2
NetS1_2
S1_2
U2_12
NetS2_2
S2_4
U2_13
NetS3_2
S3_4
U2_14
NetU2_3
U2_3
U3_7
NetU2_4
U2_4
U3_6
NetU2_5
U2_5
U3_5
RS
P4_4
U2_21
RW
P4_5
U2_22
RXT
P5_1
U2_10
SCK
P6_3
U2_8
TXD
P5_2
U2_11
VCC
C3_1
C6_2
K1_1
K2_1
K2_2
K2_3
K2_5
K2_6
P1_1
P3_1
P4_2
R5_1
U1_1
U2_31
U2_40
U3_1
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