CY62256LL-70PXC Cypress Semiconductor Corp, CY62256LL-70PXC Datasheet

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CY62256LL-70PXC

Manufacturer Part Number
CY62256LL-70PXC
Description
IC SRAM 256KBIT 70NS 28DIP
Manufacturer
Cypress Semiconductor Corp
Datasheet

Specifications of CY62256LL-70PXC

Format - Memory
RAM
Memory Type
SRAM
Memory Size
256K (32K x 8)
Speed
70ns
Interface
Parallel
Voltage - Supply
4.5 V ~ 5.5 V
Operating Temperature
0°C ~ 70°C
Package / Case
28-DIP (0.600", 15.24mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
428-1748-5
CY62256LL-70PXC

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
CY62256LL-70PXC
Manufacturer:
CY
Quantity:
3 506
Cypress Semiconductor Corporation
Document #: 38-05248 Rev. *E
Features
Note:
1. For best practice recommendations, please refer to the Cypress application note “System Design Guidelines” on http://www.cypress.com.
• Temperature Ranges
• High speed: 55 ns and 70 ns
• Voltage range: 4.5V–5.5V operation
• Low active power (70 ns, LL version, Com’l and Ind’l)
• Low standby power (70 ns, LL version, Com’l and Ind’l)
• Easy memory expansion with CE and OE features
• TTL-compatible inputs and outputs
• Automatic power-down when deselected
• CMOS for optimum speed/power
• Package available in a standard 450-mil-wide (300-mil
• Also available in Lead-free packages
Logic Block Diagram
— Commercial: 0°C to 70°C
— Industrial: –40°C to 85°C
— Automotive: –40°C to 125°C
— 275 mW (max.)
— 28 µW (max.)
body width) 28-lead narrow SOIC, 28-lead TSOP-1,
28-lead reverse TSOP-1, and 600-mil 28-lead PDIP
packages
CE
WE
OE
A
A
A
A
A
A
A
A
A
10
9
8
7
6
5
4
3
2
• 198 Champion Court
INPUTBUFFER
512 x 512
DECODER
COLUMN
ARRA Y
Functional Description
The CY62256 is a high-performance CMOS static RAM
organized as 32K words by 8 bits. Easy memory expansion is
provided by an active LOW chip enable (CE) and active LOW
output enable (OE) and three-state drivers. This device has an
automatic
consumption by 99.9% when deselected.
An active LOW write enable signal (WE) controls the
writing/reading operation of the memory. When CE and WE
inputs are both LOW, data on the eight data input/output pins
(I/O
addressed by the address present on the address pins (A
through A
the device and enabling the outputs, CE and OE active LOW,
while WE remains inactive or HIGH. Under these conditions,
the contents of the location addressed by the information on
address pins are present on the eight data input/output pins.
The input/output pins remain in a high-impedance state unless
the chip is selected, outputs are enabled, and write enable
(WE) is HIGH.
POWER
DOWN
0
through I/O
256K (32K x 8) Static RAM
14
San Jose
). Reading the device is accomplished by selecting
power-down
7
) is written into the memory location
,
CA 95134
feature,
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
[1]
0
1
2
3
4
5
6
7
Revised July 14, 2005
reducing
408-943-2600
CY62256
the
power
0

Related parts for CY62256LL-70PXC

CY62256LL-70PXC Summary of contents

Page 1

... Note: 1. For best practice recommendations, please refer to the Cypress application note “System Design Guidelines” on http://www.cypress.com. Cypress Semiconductor Corporation Document #: 38-05248 Rev. *E 256K (32K x 8) Static RAM Functional Description The CY62256 is a high-performance CMOS static RAM organized as 32K words by 8 bits. Easy memory expansion is provided by an active LOW chip enable (CE) and active LOW output enable (OE) and three-state drivers ...

Page 2

... Product Portfolio Product CY62256 Commercial CY62256L Com’l / Ind’l CY62256LL Commercial CY62256LL Industrial CY62256LL Automotive Pin Configurations Narrow SOIC Top View I I I I/O 3 GND 15 14 Pin Definitions Pin Number Type 1–10, 21, 23–26 Input 11–13, 15–19, Input/Output ...

Page 3

Maximum Ratings (Above which the useful life may be impaired. For user guide- lines, not tested.) Storage Temperature ................................. –65°C to +150°C Ambient Temperature with Power Applied..............................................-55°C to +125°C Supply Voltage to Ground Potential (Pin 28 to Pin 14) ........................................... ...

Page 4

AC Test Loads and Waveforms R1 1800Ω 5V OUTPUT OUTPUT R2 100 pF 990Ω INCLUDING JIG AND SCOPE (a) Data Retention Characteristics Parameter Description V V for Data Retention Data Retention Current CCDR [5] t Chip Deselect ...

Page 5

... HZWE 10. The internal Write time of the memory is defined by the overlap of CE LOW and WE LOW. Both signals must be LOW to initiate a Write and either signal can terminate a Write by going HIGH. The data input set-up and hold timing should be referenced to the rising edge of the signal that terminates the Write. ...

Page 6

Switching Waveforms (continued) [13, 14] Read Cycle No HIGH IMPEDANCE DATA OUT t LZCE SUPPLY CURRENT Write Cycle No. 1 (WE Controlled) ADDRESS DATA I/O NOTE t ...

Page 7

Switching Waveforms (continued) Write Cycle No. 3 (WE Controlled, OE LOW) ADDRESS DATA I/O NOTE 17 Document #: 38-05248 Rev. *E [11, 16 DATA t HZWE ...

Page 8

Typical DC and AC Characteristics NORMALIZED SUPPLY CURRENT vs. SUPPLY VOLTAGE 1.4 1 1.0 0 25°C A 0.4 0 0.0 4.0 4.5 5.0 5.5 SUPPLY VOLTAGE (V) NORMALIZED ACCESS ...

Page 9

Typical DC and AC Characteristics TYPICAL POWER-ON CURRENT vs. SUPPLY VOLTAGE 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0.0 1.0 2.0 3.0 4.0 SUPPLY VOLTAGE (V) Truth Table Inputs/Outputs High Data ...

Page 10

... CY62256−70SNC CY62256L−70SNC CY62256L−70SNXC CY62256LL−70SNC CY62256LL−70SNXC CY62256L–70SNI CY62256L–70SNXI CY62256LL−70SNI CY62256LL−70SNXI CY62256LL−70ZC CY62256LL−70ZXC CY62256LL−70ZI CY62256LL−70ZXI CY62256−70PC CY62256L−70PC CY62256L−70PXC CY62256LL−70PC CY62256LL−70PXC CY62256LL−70ZRI CY62256LL−70ZRXI Document #: 38-05248 Rev. *E ...

Page 11

Package Diagrams Document #: 38-05248 Rev. *E 28-lead (600-mil) Molded DIP P15 28-lead (300-mil) SNC (Narrow Body) SN28 CY62256 51-85017-*A 51-85092-*B Page ...

Page 12

... Document #: 38-05248 Rev. *E © Cypress Semiconductor Corporation, 2005. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a Cypress product. Nor does it convey or imply any license under patent or other rights. Cypress products are not warranted nor intended to be used for medical, life support, life saving, critical control or safety applications, unless pursuant to an express written agreement with Cypress ...

Page 13

... Corrected package description in Ordering Information table AJU Added Automotive product information SYT Added Pb-Free packages on page# 10 SYT Changed address of Cypress Semiconductor Corporation on Page# 1 from “3901 North First Street” to “198 Champion Court” Added CY62256L–70SNXI package in the Ordering Information on Page # 10 CY62256 Description of Change Page ...

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