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componentes Descripción
Lista de partido
DS1215
Phantom time chip
Dallas Semiconductor -> Maxim Integrated
DS1215 Datasheet PDF : 15 Pages
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RAM/TIME CHIP INTERFACE
Figure 3
CMOS STATIC RAM
A0 – AN
ADD
DATA I/O
WE
D0 – D7
OE
CE
V
CC
CE
RST
+
BAT
1
DS1215
10
15
CEO V
CCO
12
6
OE
D
3
7
WE
Q
11
CEI
V
CCI
13
ROM/ 9
RST
4
RAM
14
BAT
1
BAT
2
X
1
X
2
1
2
32.768 KHz
+5 VDC
+
BAT
2
OR TIE TO GND FOR
ONE–BATTERY
OPERATION
DS1215
ROM/TIME CHIP INTERFACE
Figure 4
ROM
A0 – AN
ADD
V
CC
DATA I/O
A2
OE
OE
A0
CE
D0 – D7
CE
RST
+
BAT
1
DS1215
6
D
12
OE
3
WE
10
CEO
7
Q
16
V
CCI
11
CEI
V
CCO
15
13
ROM/ 9
RST
4
RAM
14
BAT
1
BAT
2
X
1
X
2
1
2
32.768 KHz
+5 VDC
+
BAT
2
OR TIE TO GND FOR
ONE–BATTERY
OPERATION
032697 5/15
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