Datasheet
DS12885/DS12887/DS12887A/DS12C887/DS12C887A
Real-Time Clocks
20 ____________________________________________________________________
24
23
22
21
20
19
18
17
1
2
3
4
5
6
7
8
V
CC
SQW
N.C.
RCLRAD0
X2
X1
MOT
TOP VIEW
V
BAT
IRQ
RESET
DSAD4
AD3
AD2
AD1
16
15
14
13
9
10
11
12
GND
R/W
AS
CSGND
AD7
AD6
AD5
SO, PDIP
PLCC
DS12885
DS12885S
DS12885Q
V
CC
SQW
N.C.
N.C.
(RCLR)
AD0
N.C.
N.C.
MOT
N.C.
IRQ
RESET
DSAD4
AD3
AD2
AD1
N.C.
R/W
AS
CS
( ) FOR THE DS12887A/DS12C887A.
NOTE: THE DS12887A AND DS12C887A CANNOT BE STORED OR SHIPPED IN CONDUCTIVE MATERIAL
THAT WILL GIVE A CONTINUITY PATH BETWEEN THE RAM CLEAR PIN AND GROUND.
GND
AD7
AD6
AD5
EDIP
DS12887
DS12887A
DS12C887
DS12C887A
12
13
14
15
16
17
18
1N.C.
V
CC
SQW
N.C.
MOT
X1
X2
GND
CS
AS
N.C.
AD7
N.C.
AD6
2
3
4
26
27
28
19
20
21
22
23
24
25
5
6
7
8
9
10
11
AD0
AD1
AD2
AD3
AD4
AD5
N.C.
RCLR
V
BAT
IRQ
RESET
DS
GND
R/W
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
Pin Configurations