Datasheet

DS1553 64kB, Nonvolatile, Year-2000-Compliant Timekeeping RAM
19 of 20
PIN CONFIGURATIONS
PACKAGE INFORMATION
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-”
in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
PACKAGE TYPE PACKAGE CODE OUTLINE NO. LAND PATTERN NO.
28 EDIP MDP28+2
21-0241
—
34 PWRCP PC1+2
21-0246
—
1
I
RQ
/
FT
2
3
N.C.
N.C.
R
ST
V
CC
W
E
O
E
C
E
DQ7
DQ6
DQ5
DQ4
DQ3
DQ2
DQ1
DQ0
GND
4
5
6
7
8
9
10
11
12
13
14
15
16
17
N.C.
N.C.
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
N.C.
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
34
N.C.
X1
GND
V
BAT
X2
34-Pin PowerCap Module Board
(Uses DS9034PCX PowerCap)
DS1553
28-Pin Encapsulated Package
(700-mil Extended)
V
CC
WE
IRQ/FT
A8
A9
A11
OE
A10
CE
DQ7
DQ6
DQ5
DQ4
DQ3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
RST
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
GND
28
27
26
25
24
23
22
21
20
19
18
17
16
15
DS1553
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