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M48Z02, M48Z12

SUMMARY DESCRIPTION

non-volatile static RAM which is pin and functional

compatible with the DS1220.

A special 24-pin, 600mil DIP CAPHAT™ package

houses the M48Z02/12 silicon with a long life lithi-

um button cell to form a highly integrated battery

backed-up memory solution.

The M48Z02/12 button cell has sufficient capacity

and storage life to maintain data functionality for

an accumulated time period of at least 10 years in

the absence of power over commercial operating

temperature range.

The M48Z02/12 is a non-volatile pin and function

equivalent to any JEDEC standard 2K 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.

Figure 2. Logic Diagram

Table 1. Signal Names

Figure 3. DIP Connections

AI01186

11

A0-A10

W

DQ0-DQ7

VCC

M48Z02

M48Z12

G

VSS

8

E

A0-A10

Address Inputs

DQ0-DQ7

Data Inputs / Outputs

E

Chip Enable

G

Output Enable

W

WRITE Enable

Supply Voltage

Ground

A1

A0

DQ0

A7

A4

A3

A2

A6

A5

A10

A8

A9

DQ7

W

G

E

DQ5

DQ1

DQ2

DQ3

VSS

DQ4

DQ6

VCC

AI01187

M48Z02

M48Z12

8

1

2

3

4

5

6

7

9

10

11

12

16

15

24

23

22

21

20

19

18

17

14

13