M48T512Y_10 Datasheet, PDF (5/23 Pages) STMicroelectronics – 5.0 or 3.3 V, 4 Mbit (512 Kbit x 8) TIMEKEEPER® SRAM

M48T512Y, M48T512V
1
Description
Description
The M48T512Y/V TIMEKEEPER^® RAM is a 512 Kb 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-backed memory and real-time clock solution.
The M48T512Y/V directly replaces industry standard 512 Kb x 8 SRAMs. It also provides
the non-volatility of Flash without any requirement for special WRITE timing or limitations on
the number of WRITEs that can be performed.
Figure 1. Logic diagram
VCC
19
A0-A18
W
E
G
M48T512Y
M48T512V
8
DQ0-DQ7
Table 1. Signal names
A0-A18
DQ0-DQ7
E
G
W
V_CC
V_SS
V_SS
Address inputs
Data inputs / outputs
Chip enable input
Output enable input
WRITE enable input
Supply voltage
Ground
AI02262
Doc ID 5747 Rev 6
5/23