W24256AK-35 datasheet, PDF - EEWORLD Datasheet

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W24256AK-35: DescriptionStandard SRAM, 32KX8, 35ns, CMOS, PDIP28, 0.300 INCH, SKINNY, PLASTIC, DIP-28; Categorystorage storage; File Size152KB，10 Pages; ManufacturerWinbond Electronics Corporation; Websitehttp://www.winbond.com.tw

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W24256AK-35 Overview

Standard SRAM, 32KX8, 35ns, CMOS, PDIP28, 0.300 INCH, SKINNY, PLASTIC, DIP-28

W24256AK-35 Parametric

Parameter Name	Attribute value
Is it Rohs certified?	incompatible
Maker	Winbond Electronics Corporation
Parts packaging code	DIP
package instruction	0.300 INCH, SKINNY, PLASTIC, DIP-28
Contacts	28
Reach Compliance Code	not_compliant
ECCN code	EAR99
Maximum access time	35 ns
I/O type	COMMON
JESD-30 code	R-PDIP-T28
JESD-609 code	e0
length	35.26 mm
memory density	262144 bit
Memory IC Type	STANDARD SRAM
memory width	8
Number of functions	1
Number of terminals	28
word count	32768 words
character code	32000
Operating mode	ASYNCHRONOUS
Maximum operating temperature	70 °C
Minimum operating temperature
organize	32KX8
Output characteristics	3-STATE
Package body material	PLASTIC/EPOXY
encapsulated code	DIP
Encapsulate equivalent code	DIP28,.3
Package shape	RECTANGULAR
Package form	IN-LINE
Parallel/Serial	PARALLEL
Peak Reflow Temperature (Celsius)	NOT SPECIFIED
power supply	5 V
Certification status	Not Qualified
Maximum seat height	4.45 mm
Maximum standby current	0.002 A
Minimum standby current	4.5 V
Maximum slew rate	0.2 mA
Maximum supply voltage (Vsup)	5.5 V
Minimum supply voltage (Vsup)	4.5 V
Nominal supply voltage (Vsup)	5 V
surface mount	NO
technology	CMOS
Temperature level	COMMERCIAL
Terminal surface	Tin/Lead (Sn/Pb)
Terminal form	THROUGH-HOLE
Terminal pitch	2.54 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	NOT SPECIFIED
width	7.62 mm

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Preliminary W24256A

32K

8 HIGH SPEED CMOS STATIC RAM

GENERAL DESCRIPTION

The W24256A is a high speed, low power CMOS static RAM organized as 32768

8 bits that

operates on a single 5-volt power supply. This device is manufactured using Winbond's high

performance CMOS technology.

FEATURES

•

High speed access time: 15/35 nS (max.)

Low power consumption:

−

Active: 550 mW (max.)

Single

+5V

power supply

Fully static operation

•

All inputs and outputs directly TTL compatible

Three-state outputs

Available packages: 28-pin 300 mil SOJ, 330

mil SOP, skinny DIP and standard type one

TSOP (8 mm

13.4 mm)

PIN CONFIGURATIONS

BLOCK DIAGRAM

A14

A12

I/O1

I/O2

I/O3

28-pin

DIP

A13

A11

A10

I/O8

I/O7

I/O6

I/O5

I/O4

A14

DECODER

CORE

ARRAY

CONTROL

DATA I/O

I/O1

I/O8

PIN DESCRIPTION

SYMBOL

DESCRIPTION

Address Inputs

Data Inputs/Outputs

Chip Select Input

Write Enable Input

Output Enable Input

Power Supply

Ground

A0−A14

I/O1−I/O8

A11

A13

A14

A12

28-pin

TSOP

A10

I/O8

I/O7

I/O6

I/O5

I/O4

I/O3

I/O2

I/O1

-1-

Publication Release Date: October 1999

Revision A1

W24256AK-35 Related Products

	W24256AK-35	W24256AS-15	W24256AQ-15	W24256AS-35	W24256AK-15	W24256AQ-35	W24256AJ-35	W24256AJ-15
Description	Standard SRAM, 32KX8, 35ns, CMOS, PDIP28, 0.300 INCH, SKINNY, PLASTIC, DIP-28	Standard SRAM, 32KX8, 15ns, CMOS, PDSO28, 0.330 INCH, SOP-28	Standard SRAM, 32KX8, 15ns, CMOS, PDSO28, 8 X 13.40 MM, TSOP1-28	Standard SRAM, 32KX8, 35ns, CMOS, PDSO28, 0.330 INCH, SOP-28	Standard SRAM, 32KX8, 15ns, CMOS, PDIP28, 0.300 INCH, SKINNY, PLASTIC, DIP-28	Standard SRAM, 32KX8, 35ns, CMOS, PDSO28, 8 X 13.40 MM, TSOP1-28	Standard SRAM, 32KX8, 35ns, CMOS, PDSO28, 0.300 INCH, SOJ-28	Standard SRAM, 32KX8, 15ns, CMOS, PDSO28, 0.300 INCH, SOJ-28
Maker	Winbond Electronics Corporation	Winbond Electronics Corporation	Winbond Electronics Corporation	Winbond Electronics Corporation	Winbond Electronics Corporation	Winbond Electronics Corporation	Winbond Electronics Corporation	Winbond Electronics Corporation
Parts packaging code	DIP	SOIC	TSOP	SOIC	DIP	TSOP	SOJ	SOJ
package instruction	0.300 INCH, SKINNY, PLASTIC, DIP-28	SOP,	TSOP1,	SOP,	DIP,	TSOP1,	0.300 INCH, SOJ-28	SOJ,
Contacts	28	28	28	28	28	28	28	28
Reach Compliance Code	not_compliant	unknown	unknown	unknown	unknown	unknown	not_compliant	unknown
ECCN code	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99
Maximum access time	35 ns	15 ns	15 ns	35 ns	15 ns	35 ns	35 ns	15 ns
JESD-30 code	R-PDIP-T28	R-PDSO-G28	R-PDSO-G28	R-PDSO-G28	R-PDIP-T28	R-PDSO-G28	R-PDSO-J28	R-PDSO-J28
length	35.26 mm	18.11 mm	11.8 mm	18.11 mm	35.26 mm	11.8 mm	18.03 mm	18.03 mm
memory density	262144 bit	262144 bit	262144 bit	262144 bit	262144 bit	262144 bit	262144 bit	262144 bit
Memory IC Type	STANDARD SRAM	STANDARD SRAM	STANDARD SRAM	STANDARD SRAM	STANDARD SRAM	STANDARD SRAM	STANDARD SRAM	STANDARD SRAM
memory width	8	8	8	8	8	8	8	8
Number of functions	1	1	1	1	1	1	1	1
Number of terminals	28	28	28	28	28	28	28	28
word count	32768 words	32768 words	32768 words	32768 words	32768 words	32768 words	32768 words	32768 words
character code	32000	32000	32000	32000	32000	32000	32000	32000
Operating mode	ASYNCHRONOUS	ASYNCHRONOUS	ASYNCHRONOUS	ASYNCHRONOUS	ASYNCHRONOUS	ASYNCHRONOUS	ASYNCHRONOUS	ASYNCHRONOUS
Maximum operating temperature	70 °C	70 °C	70 °C	70 °C	70 °C	70 °C	70 °C	70 °C
organize	32KX8	32KX8	32KX8	32KX8	32KX8	32KX8	32KX8	32KX8
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	DIP	SOP	TSOP1	SOP	DIP	TSOP1	SOJ	SOJ
Package shape	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	IN-LINE	SMALL OUTLINE	SMALL OUTLINE, THIN PROFILE	SMALL OUTLINE	IN-LINE	SMALL OUTLINE, THIN PROFILE	SMALL OUTLINE	SMALL OUTLINE
Parallel/Serial	PARALLEL	PARALLEL	PARALLEL	PARALLEL	PARALLEL	PARALLEL	PARALLEL	PARALLEL
Certification status	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	4.45 mm	2.85 mm	1.2 mm	2.85 mm	4.45 mm	1.2 mm	3.56 mm	3.56 mm
Maximum supply voltage (Vsup)	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V	5.5 V
Minimum supply voltage (Vsup)	4.5 V	4.5 V	4.5 V	4.5 V	4.5 V	4.5 V	4.5 V	4.5 V
Nominal supply voltage (Vsup)	5 V	5 V	5 V	5 V	5 V	5 V	5 V	5 V
surface mount	NO	YES	YES	YES	NO	YES	YES	YES
technology	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS	CMOS
Temperature level	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL	COMMERCIAL
Terminal form	THROUGH-HOLE	GULL WING	GULL WING	GULL WING	THROUGH-HOLE	GULL WING	J BEND	J BEND
Terminal pitch	2.54 mm	1.27 mm	0.55 mm	1.27 mm	2.54 mm	0.55 mm	1.27 mm	1.27 mm
Terminal location	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL	DUAL
width	7.62 mm	8.41 mm	8 mm	8.41 mm	7.62 mm	8 mm	7.62 mm	7.62 mm
JESD-609 code	e0	e3	e3	e3	-	e3	e0	-
Terminal surface	Tin/Lead (Sn/Pb)	MATTE TIN	MATTE TIN	MATTE TIN	-	MATTE TIN	Tin/Lead (Sn/Pb)	-

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