6.42

71V321L

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

Industrial and Commercial Temperature Ranges

2

71V321

PLG52(4)

52-Pin PLCC

Top View

4L

I/O

5L

I/O

6L

I/O

7L

I/O

NC

GND

I/O

I/O

I/O

I/O

I/O

I/O

I/O

0R

1R

2R

3R

4R

6R

5R

A0L

OEL

A10L

INTL

BUSYL

R/

WL

CEL

VCC

CER

R/

WR

BUSYR

INTR

A10R

1

2

3

4

5

6

7

47

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

Pin Configurations(1,2,3)

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).

71V321

PPG64(4)

PNG64(4)

64-Pin STQFP

64-Pin TQFP

Top View

89 10 11 12 13 14 15 16

12 3 456 7

46 45 44 43 42 41 40 39 38 37 36 35 34

47

48

33

17

18

19

20

32

31

30

29

28

27

26

25

24

23

22

21

49

50

51

52

63

62

61

60

59

58

57

56

55

54

53

64

GND

4L

I/O

5L

I/O

6L

I/O

7L

I/O

I/O0R

I/O1R

I/O2R

I/O3R

I/O4R

I/O5R

I/O3L

N/C

N/C

GND

N/C

N/C

A10R

VCC

BUSYL

R/

WL

CER

R/

WR

BUSYR

CEL

N/C

N/C

A10L

VCC

N/C

INTR

INTL

3026 drw 03

NOTES:

1. All VCC pins must be connected to power supply.

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.