CY62256(2004) 查看數據表（PDF） - Cypress Semiconductor

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CY62256
(Rev.:2004)

256K (32K x 8) Static RAM

Cypress Semiconductor 

CY62256

Product Portfolio

Product

CY62256

Commercial

CY62256L

Com’l / Ind’l

CY62256LL Commercial

CY62256LL Industrial

CY62256LL Automotive

Pin Configurations

Min.

4.5

VCC Range (V)

Typ.[2]

5.0

Max.

5.5

Speed

(ns)

70

55/70

70

55/70

55

Power Dissipation

Operating, ICC

(mA)

Typ.[2] Max.

Standby, ISB2

(µA)

Typ.[2] Max.

28

55

1

5

25

50

2

50

25

50

0.1

5

25

50

0.1

10

25

50

0.1

15

Narrow SOIC

Top View

A5 1

A6 2

A7 3

A8 4

A9 5

A10 6

A11 7

A12 8

A13 9

A14 10

I/O0 11

I/O1 12

I/O2 13

GND 14

28 VCC

27 WE

26 A4

25 A3

24 A2

23 A1

22 OE

21 A0

20 CE

19 I/O7

18 I/O6

17 I/O5

16 I/O4

15 I/O3

Pin Definitions

DIP

Top View

A5 1

A6 2

A7 3

A8 4

A9 5

A10 6

A11 7

A12 8

A13 9

A14 10

I/O0 11

I/O1 12

I/O2 13

GND 14

28 VCC

27 WE

26 A4

25 A3

24 A2

23 A1

22 OE

21 A0

20 CE

19 I/O7

18 I/O6

17 I/O5

16 I/O4

15 I/O3

OE 22

A1 23

A2 24

A3 25

A4 26

WE 27

VCC

28

A5

1

A6

2

A7

3

A8

4

A9

5

A10

6

A11

7

A11

7

A10

6

A9

5

A8

4

A7

3

A6

2

A5

1

VCC

28

WE

27

A4

26

A3

25

A2

24

A1

23

OE 22

TSOP I

Top View

(not to scale)

TSOP I

Reverse Pinout

Top View

(not to scale)

21 A0

20 CE

19 I/O7

18 I/O6

17 I/O5

16 I/O4

15 I/O3

14 GND

13 I/O2

12 I/O1

11 I/O0

10 A14

9 A13

8 A12

8 A12

9 A13

10 A14

11 I/O0

12 I/O1

13 I/O2

14 GND

15 I/O3

16 I/O4

17 I/O5

18 I/O6

19 I/O7

20 CE

21 A0

Pin Number

Type

Description

1-10, 21, 23-26

11-13, 15-19,

27

Input

Input/Output

Input/Control

A0-A14. Address Inputs

I/O0-I/O7. Data lines. Used as input or output lines depending on operation

WE. When selected LOW, a WRITE is conducted. When selected HIGH, a READ is

conducted

20

Input/Control CE. When LOW, selects the chip. When HIGH, deselects the chip

22

Input/Control OE. Output Enable. Controls the direction of the I/O pins. When LOW, the I/O pins

behave as outputs. When deasserted HIGH, I/O pins are three-stated, and act as

input data pins

14

Ground

GND. Ground for the device

28

Power Supply Vcc. Power supply for the device

Notes:

2. Typical specifications are the mean values measured over a large sample size across normal production process variations and are taken at nominal conditions

(TA = 25°C, VCC). Parameters are guaranteed by design and characterization, and not 100% tested.

Document #: 38-05248 Rev. *C

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