6.42

IDT71V321S/L

High Speed 3.3V 2K x 8 Dual-Port Static RAM with Interrupts

Industrial and Commercial Temperature Ranges

2

IDT71V321J

52-Pin PLCC

INDEX

I/O

A

A

A

A

A

A

A

A

A

I/O

I/O

I/O

1L

2L

3L

4L

5L

6L

7L

8L

9L

0L

1L

3L

2L

A

A

A

A

A

A

A

A

A

A

NC

I/O

0R

1R

2R

3R

4R

5R

6R

7R

8R

9R

7R

1

2

3

4

5

6

747

48

49

50

51

52

9

8

10

11

12

13

14

15

16

17

18

19

20

27

26

25

24

23

22

21

33

32

31

30

29

28

35

34

36

37

38

39

40

41

42

43

44

45

46

3026 drw 02

Description

The IDT71V321 is a high-speed 2K x 8 Dual-Port Static RAMs with

internal interrupt logic for interprocessor communications. The

IDT71V321 is designed to be used as a stand-alone 8-bit Dual-Port

RAM.

The device provides two independent ports with separate control,

address, and I/O pins that permit independent, asynchronous access

for reads or writes to any location in memory. An automatic power

down feature, controlled by CE, permits the on chip circuitry of each

port to enter a very low standby power mode.

Fabricated using CMOS high-performance technology, these de-

vices typically operate on only 325mW of power. Low-power (L) ver-

sions offer battery backup data retention capability, with each Dual-Port

typically consuming 200µW from a 2V battery.

The IDT71V321 devices are packaged in a 52-pin PLCC, a 64-pin

TQFP (thin quad flatpack), and a 64-pin STQFP (super thin quad

flatpack).

INDEX

IDT71V321PF or TF

&

64-Pin STQFP

64-Pin TQFP

8

9

10

11

12

13

14

15

16

1

2

3

4

5

6

7

46

45

44

43

42

41

40

39

38

37

36

35

34

47

48

33

N/C

N/C

N/C

N/C

N/C

3026 drw 03

NOTES:

2. All GND pins must be connected to ground supply.

3. J52-1 package body is approximately .75 in x .75 in x .17 in.

PP64-1 package body is approximately 10mm x 10mm x 1.4mm.

PN64-1 package body is approximately 14mm x 14mm x 1.4mm.

4. This package code is used to reference the package diagram.

5. This text does not indicate orientation of the actual part-marking.