XM20C64

1

©Xicor, Inc. 1991, 1995, 1996 Patents Pending

Characteristics subject to change without notice

3874-1.6 6/20/96 T0/C2/D0 NS

64K

XM20C64

8K x 8

FEATURES

upon Power-fail Detection

—Provides Interrupt or Status Information

—Linkable to System Reset Circuitry

Power-on

— –55

—Endurance: 1,000,000 Nonvolatile Store Cycles

—Data Retention: 100 Years

—

DESCRIPTION

The XM20C64 is a high speed nonvolatile RAM Module.

It is comprised of four Xicor X20C16 high speed

NOVRAMs, a high speed decoder and decoupling

capacitors mounted on a co-fired multilayered Ceramic

substrate. The XM20C64 is configured 8K x 8 and is fully

decoded. The module is a 28-lead DIP conforming to the

industry standard pinout for SRAMs.

The XM20C64 fully supports the AUTOSTORE feature,

providing hands-off automatic storing of RAM data

threshold.

The XM20C64 is a highly reliable memory component,

supporting unlimited writes to RAM, a minimum 1,000,000

store cycles and a minimum 100 year data retention.

3874 FHD F01

NE

OE

WE

CE

A0–A10

I/O

NE

OE

WE

CE

A0–A10

I/O

NE

OE

WE

CE

A0–A10

I/O

NE

OE

WE

CE

A0–A10

I/O

Y0

Y1

Y2

Y3

1

A1

A0

2

3

A12

A11

CE

7

AUTOSTORE

WE

OE

NE

A0–A10

I/O0–I/O7

6

5

4

23

31

25

2

30

23

31

25

2

30

23

31

25

2

30

23

31

25

2

30

AUTOSTORE™ NOVRAM is a trademark of Xicor, Inc.

FUNCTIONAL DIAGRAM

PIN CONFIGURATION

3874 FHD F02.1

NE

A12

A7

A6

A5

A4

A3

A2

A1

A0

I/O0

I/O1

I/O2

VSS

1

2

3

4

5

6

7

8

9

10

11

12

13

14

28

27

26

25

24

23

22

21

20

19

18

17

16

15

VCC

WE

AS

A8

A9

A11

OE

A10

CE

I/O7

I/O6

I/O5

I/04

I/O3