M48T128YPM datasheet(4/22 Pages) STMICROELECTRONICS

4 / 22 page

M48T128Y, M48T128V*

4/22

SUMMARY DESCRIPTION

The M48T128Y/V TIMEKEEPER® RAM is a

128Kb x 8 non-volatile static RAM and real time

clock. The special DIP package provides a fully in-

tegrated battery back-up memory and real time

clock solution. The M48T128Y/V directly replaces

industry standard 128Kb x 8 SRAM.

It also provides the non-volatility of Flash without

any requirement for special WRITE timing or limi-

tations on the number of WRITEs that can be per-

formed. The 32-pin, 600mil DIP Hybrid houses a

controller chip, SRAM, quartz crystal, and a long

life lithium button cell in a single package.

Figure 2. Logic Diagram

Table 1. Signal Names

Figure 3. DIP Connections

AI02244

A0-A16

DQ0-DQ7

VCC

M48T128Y

M48T128V

VSS

A0-A16

Address Inputs

DQ0-DQ7

Data Inputs / Outputs

Chip Enable

Output Enable

WRITE Enable

VCC

Supply Voltage

VSS

Ground

Not Connected Internally

DQ0

A13

A10

DQ7

A15

A11

DQ5

DQ1

DQ2

DQ3

VSS

DQ4

DQ6

A16

VCC

AI02245

M48T128Y

M48T128V

A12

A14

M48T128YPM Datasheet(PDF) 4 Page - STMicroelectronics

M48T128YPM Datasheet(HTML) 4 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22

Datasheet Download

Link URL