1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
D D
C C
B B
A A
Title
Number RevisionSize
A3
Date: 2021/12/15 Sheet of
File: I:\办公2021下\病房呼叫器12.15\原理图\Sheet1.SchDocDrawn By:
P1.0
1
P1.1
2
P1.2
3
P1.3
4
P1.4
5
P1.5
6
P1.6
7
P1.7
8
RST
9
P3.0/RXD
10
P3.1/TXD
11
P3.2/INT0
12
P3.3/INT1
13
P3.4/T0
14
P3.5/T1
15
P3.6/WR
16
P3.7/RD
17
XTAL2
18
XTAL1
19
GND
20
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/PROG
30
EA
31
P0.7
32
P0.6
33
P0.5
34
P0.4
35
P0.3
36
P0.2
37
P0.1
38
P0.0
39
VCC
40
U?
80511 2
Y1
XTAL
30pF
C2
Cap
10uF
C1
Cap Pol1
30pF
C3
Cap
10K
R1
Res2
GND
VCC
1
2
3
4
5
6
7
8
9
RP1
RESP
S1
SW-PB
Q1
PNP
LS1
Speaker
VCC
GND
10K
R3
Res2
S2
SW-PB
S3
SW-PB
S4
SW-PB
S5
SW-PB
S6
SW-PB
S7
SW-PB
S8
SW-PB
S9
SW-PB
S10
SW-PB
S11
SW-PB
S12
SW-PB
S13
SW-PB
S14
SW-PB
S15
SW-PB
S16
SW-PB
S17
SW-PB
P30
P31
P32
P33
P34
P35
P36
P37
P10
P11
P12
P13
P14
P15
P16
P17
Vin Vout
GND
7805
Volt Reg
0.1uF
C5
Cap
100uF
C4
Cap Pol1
0.1uF
C7
Cap
100uF
C6
Cap Pol1
1
2
P1
电源接口
GND
VCC
A
B
C
D
E
F
G
DP
1
2
DS1
S18
SW-PB
GND
S35
SW-PB
S36
SW-PB
S37
SW-PB
S38
SW-PB
S39
SW-PB
S40
SW-PB
S41
SW-PB
S42
SW-PB
S43
SW-PB
S44
SW-PB
S45
SW-PB
S46
SW-PB
S47
SW-PB
S48
SW-PB
S49
SW-PB
S50
SW-PB
S19
SW-PB
S20
SW-PB
S21
SW-PB
S22
SW-PB
S23
SW-PB
S24
SW-PB
S25
SW-PB
S26
SW-PB
S27
SW-PB
S28
SW-PB
S29
SW-PB
S30
SW-PB
S31
SW-PB
S32
SW-PB
S33
SW-PB
S34
SW-PB
S51
SW-PB
S52
SW-PB
S53
SW-PB
S54
SW-PB
S55
SW-PB
S56
SW-PB
S57
SW-PB
S58
SW-PB
S59
SW-PB
S60
SW-PB
S61
SW-PB
S62
SW-PB
S63
SW-PB
S64
SW-PB
S65
SW-PB
S66
SW-PB
P30
P31
P32
P33
P34
P35
P36
P37
P10
P11
P12
P13
P14
P15
P16
P17