5
4
4
3
3
2
2
1
1
RS RW E D0 D1 D2 D3 D4 D5 D6 D7 UP
UP RST
SCL SDA
XTAL1 XTAL2 SDA
D0 XTAL2
D1
XTAL1
D2 D3 D4
RST
D6 D5 D7
RS RW E
DN DN OK
SCL
RST VCC MISO SCK MOSI
SCK MISO MOSI SDA
0
0
5VCC
5VCC 5VCC
0
5VCC
0
0
0
5VCC
5VCC 5VCC
0
0
5VCC
0
0
0 5VCC
Title
<Title>
A4
Thursday, April 24, 2014
Title
<Title>
A4
Thursday, April 24, 2014
Title
<Title>
A4
Thursday, April 24, 2014
Title
<Title>
A4
Thursday, April 24, 2014
Title
<Title>
A4
Thursday, April 24, 2014
Title
<Title>
A4
Thursday, April 24, 2014
Y2 32.768H Y2 32.768H
SW 1
R2 8.2k R2 8.2k
R9 RESISTOR R9 RESISTOR
J2
CON2 J2
CON2 1 2
LCD
U3 LCD
LCD
U3 LCD
BT1
3V
BT1
3V
SW 2 1 2 C1
CAP C1 CAP
U2
DS1307 U2
DS1307
SQW /OUT
7
X1
1
X2
2
VBAT
3
VCC
SW 3 1 2
J1
CON6 J1
CON6
1 2 3 4 5 6
R3 RES R3 RES
2
SW 4 1 2
C2
33P C2
33P
1 2
R8
C3
33P C3
33P
1 2
U1
89s52
U1
89s52
p1.0 (T2)
1
p1.1 (T2 EX)
2
p1.2
3
p1.3
4
p1.4
5
p1.5 ( MOSI)
6
p1.6 (MISO)
7
p1.7 (SCK)
8
RST
9
P3.0
10
P3.1
11
P3.2
12
P3.3
13
P3.4
14
P3.5
15
P3.6
16
P3.7
17
XTAL1
18
XTAL2
19
GND
20
Y1 12M Y1 12M