M48Z128 查看數據表（PDF） - STMicroelectronics
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M48Z128 Datasheet PDF : 20 Pages
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M48Z128, M48Z128Y, M48Z128V
1
Description
Description
The M48Z128/Y/V ZEROPOWER® RAM is a 128 Kbit x 8 non-volatile static RAM organized
as131,072 words by 8 bits. The device combines an internal lithium battery, a CMOS SRAM
and a control circuit in a plastic, 32-pin DIP module to provide a highly integrated battery-
backed memory solution.
The M48Z128/Y/V is a non-volatile pin and function equivalent to any JEDEC standard
128 K x 8 SRAM. It also easily fits into many ROM, EPROM, and EEPROM sockets,
providing the non-volatility of PROMs without any requirement for special WRITE timing or
limitations on the number of WRITEs that can be performed. The 32-pin, 600 mil DIP
module houses the M48Z128/Y/V silicon with a long-life lithium button cell in a single
package.
Figure 1. Logic diagram
VCC
17
A0-A16
W
E
G
M48Z128
M48Z128Y
M48Z128V
8
DQ0-DQ7
Table 1.
Signal names
A0-A16
DQ0-DQ7
E
G
W
VCC
VSS
NC
VSS
Address inputs
Data inputs / outputs
Chip enable input
Output enable input
WRITE enable input
Supply voltage
Ground
Not connected internally
AI01194
Doc ID 2426 Rev 5
5/20
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