IS61LV256-15TL ISSI, Integrated Silicon Solution Inc, IS61LV256-15TL Datasheet

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IS61LV256-15TL

Manufacturer Part Number
IS61LV256-15TL
Description
IC SRAM 256KBIT 15NS 28TSOP
Manufacturer
ISSI, Integrated Silicon Solution Inc
Datasheet

Specifications of IS61LV256-15TL

Format - Memory
RAM
Memory Type
SRAM - Asynchronous
Memory Size
256K (32K x 8)
Speed
15ns
Interface
Parallel
Voltage - Supply
3 V ~ 3.6 V
Operating Temperature
0°C ~ 70°C
Package / Case
28-TSOP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
IS62LV256
FEATURES
• Access time: 45, 70 ns
• Low active power: 70 mW
• Low standby power
• Fully static operation: no clock or refresh
• TTL compatible inputs and outputs
• Single 3.3V power supply
FUNCTIONAL BLOCK DIAGRAM
Integrated Silicon Solution, Inc. — www.issi.com —
Rev. K
12/11/02
Copyright © 2002 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any time
without notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein. Customers are advised to
obtain the latest version of this device specification before relying on any published information and before placing orders for products.
32K x 8 LOW VOLTAGE STATIC RAM
— 45 µW CMOS standby
required
I/O0-I/O7
A0-A14
VCC
GND
WE
OE
CE
DECODER
CIRCUIT
CONTROL
CIRCUIT
DATA
I/O
1-800-379-4774
DESCRIPTION
The
32,768-word by 8-bit static RAM. It is fabricated using
high-performance CMOS double-metal technology.
When CE is HIGH (deselected), the device assumes a
standby mode at which the power dissipation is reduced to
10 µW (typical) with CMOS input levels.
Easy memory expansion is provided by using an active LOW
Chip Enable (CE) input and an active LOW Output Enable
(OE) input. The active LOW Write Enable (WE) controls both
writing and reading of the memory.
The IS62LV256 is pin compatible with other 32K x 8 SRAMs
in 300-mil SOJ, 330-mil plastic SOP, and TSOP (Type I Normal
and Reverse Bent) packages.
ISSI
IS62LV256 is a very high-speed, low power,
MEMORY ARRAY
COLUMN I/O
256 X 1024
ISSI
DECEMBER 2002
ISSI
®
's
1

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IS61LV256-15TL Summary of contents

Page 1

... When CE is HIGH (deselected), the device assumes a standby mode at which the power dissipation is reduced to 10 µW (typical) with CMOS input levels. Easy memory expansion is provided by using an active LOW Chip Enable (CE) input and an active LOW Output Enable (OE) input. The active LOW Write Enable (WE) controls both writing and reading of the memory ...

Page 2

IS62LV256 PIN CONFIGURATION 28-Pin SOJ and SOP A14 1 28 A12 I/ ...

Page 3

IS62LV256 ABSOLUTE MAXIMUM RATINGS Symbol Parameter V Terminal Voltage with Respect to GND TERM T Temperature Under Bias BIAS T Storage Temperature STG P Power Dissipation Output Current (LOW) OUT Notes: 1. Stress greater than those listed ...

Page 4

IS62LV256 POWER SUPPLY CHARACTERISTICS Symbol Parameter I Vcc Operating 1 CC Supply Current I Vcc Dynamic Operating 2 CC Supply Current I TTL Standby Current 1 SB (TTL Inputs) I CMOS Standby 2 SB Current (CMOS Inputs) Notes ...

Page 5

IS62LV256 AC TEST CONDITIONS Parameter Input Pulse Level Input Rise and Fall Times Input and Output Timing and Reference Levels Output Load 1213 3.3V OUTPUT 100 pF Including jig and scope Figures 1a READ CYCLE SWITCHING CHARACTERISTICS Symbol Parameter t ...

Page 6

IS62LV256 AC WAVEFORMS (1,2) READ CYCLE NO. 1 ADDRESS D OUT (1,3) READ CYCLE NO. 2 ADDRESS OUT t SUPPLY CURRENT Notes HIGH for a Read Cycle. 2. The device is continuously selected. OE, ...

Page 7

IS62LV256 WRITE CYCLE SWITCHING CHARACTERISTICS Symbol Parameter t Write Cycle Time Write End t SCE t Address Setup Time to Write End AW t Address Hold from Write End HA t Address Setup Time SA WE Pulse ...

Page 8

IS62LV256 AC WAVEFORMS Controlled) WE WRITE CYCLE NO. 1 (WE ADDRESS OUT DATA UNDEFINED Controlled WRITE CYCLE NO. 2 (CE ADDRESS OUT ...

Page 9

IS62LV256 ORDERING INFORMATION Commercial Range: 0°C to +70°C Speed (ns) Order Part No. Package 45 IS62LV256-45J 300- 45 IS62LV256-45U 330- 45 IS62LV256-45T TSOP (T 70 IS62LV256-70U 330- 70 IS62LV256-70T TSOP (T 70 IS62LV256-70RT TSOP (T Industrial Range: –40°C to +85°C ...

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