DS1553 Datasheet, PDF (19/20 Pages) Maxim Integrated Products – 64kB, Nonvolatile, Year-2000-Compliant Timekeeping RAM

PIN CONFIGURATIONS
TOP VIEW
RST
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
GND
1
28
2
27
3 ^DS1553 26
4
25
5
24
6
23
7
22
8
21
9
20
10
19
11
18
12
17
13
16
14
15
V_CC
WE
IRQ/FT
A8
A9
A11
OE
A10
CE
DQ7
DQ6
DQ5
DQ4
DQ3
28-Pin Encapsulated Package
(700-mil Extended)
DS1553 64kB, Nonvolatile, Year-2000-Compliant Timekeeping RAM
IRQ/FT 1
34
N.C.
N.C. 2
N.C. 3
DS1553
33
N.C.
32
N.C.
RST 4
V_CC
WE
5
6
31
N.C.
30
A12
29
A11
OE
CE
DQ7
DQ6
DQ5
DQ4
DQ3
DQ2
DQ1
DQ0
GND
7
28
8
27
9
26
10
25
11
24
12
23
13
22
14
21
15
20
16
17
X1 GND VBAT X2
19
18
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
34-Pin PowerCap Module Board
(Uses DS9034PCX PowerCap)
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
—
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