M48T512V Ver la hoja de datos (PDF) - STMicroelectronics
Número de pieza
componentes Descripción
Fabricante
M48T512V Datasheet PDF : 21 Pages
| |||
M48T512Y, M48T512V*
SUMMARY DESCRIPTION
The M48T512Y/V TIMEKEEPER® RAM is a
512Kb x 8 non-volatile static RAM and real time
clock organized as 524,288 words by 8 bits. The
special DIP package provides a fully integrated
battery back-up memory and real time clock solu-
tion.
The M48T512Y/V directly replaces industry stan-
dard 512Kb x 8 SRAMs. It also provides the non-
volatility of Flash without any requirement for spe-
cial WRITE timing or limitations on the number of
WRITEs that can be performed.
Figure 2. Logic Diagram
VCC
19
A0-A18
W
E
G
M48T512Y
M48T512V
8
DQ0-DQ7
Table 1. Signal Names
A0-A18
Address Inputs
DQ0-DQ7
Data Inputs / Outputs
E
Chip Enable Input
G
Output Enable Input
W
WRITE Enable Input
VCC
Supply Voltage
VSS
Ground
VSS
AI02262
Figure 3. 32-pin DIP Connections
A18
A16
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
DQ0
DQ1
DQ2
VSS
1
32
2
31
3
30
4
29
5
28
6
27
7
26
8 M48T512Y 25
9 M48T512V 24
10
23
11
22
12
21
13
20
14
19
15
18
16
17
VCC
A15
A17
W
A13
A8
A9
A11
G
A10
E
DQ7
DQ6
DQ5
DQ4
DQ3
AI02263
4/21
Share Link: 