M48Z2M1Y(2003) Ver la hoja de datos (PDF) - STMicroelectronics
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M48Z2M1Y Datasheet PDF : 17 Pages
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M48Z2M1Y, M48Z2M1V
SUMMARY DESCRIPTION
The M48Z2M1Y/V ZEROPOWER® RAM is a non-
volatile 16,777,216-bit, Static RAM organized as
2,097,152 words by 8 bits. The device combines
two internal lithium batteries, CMOS SRAMs and a
control circuit in a plastic 36-pin DIP, long Module.
The ZEROPOWER RAM replaces industry stan-
dard SRAMs. It provides the nonvolatility of
PROMs without any requirement for special
WRITE timing or limitations on the number of
WRITEs that can be performed.
Figure 2. Logic Diagram
VCC
21
A0-A20
8
DQ0-DQ7
W
M48Z2M1Y
M48Z2M1V
E
G
VSS
AI02048
Figure 3. DIP Connections
NC
A20
A18
A16
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
VSS
1
36
2
35
3
34
4
33
5
32
6
31
7
30
8
29
M48Z2M1Y
9 M48Z2M1V 28
10
27
11
26
12
25
13
24
14
23
15
22
16
21
17
20
18
19
VCC
A19
NC
A15
A17
W
A13
A8
A9
A11
G
A10
E
DQ7
DQ6
DQ5
DQ4
DQ3
AI02049
Table 1. Signal Names
A0-A20
Address Inputs
DQ0-DQ7 Data Inputs / Outputs
E
Chip Enable
G
Output Enable
W
WRITE Enable
VCC
Supply Voltage
VSS
Ground
NC
Not Connected Internally
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