IS61LV25616AL-10B Integrated Silicon Solution Inc, IS61LV25616AL-10B Datasheet

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IS61LV25616AL-10B

Manufacturer Part Number
IS61LV25616AL-10B
Description
256K x 16 HIGH SPEED ASYNCHRONOUS CMOS STATIC RAM WITH 3.3V SUPPLY
Manufacturer
Integrated Silicon Solution Inc
Datasheet

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Integrated Silicon Solution, Inc. — www.issi.com —
Rev. A
02/21/03
IS61LV25616AL
Copyright © 2003 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.
FUNCTIONAL BLOCK DIAGRAM
256K x 16 HIGH SPEED ASYNCHRONOUS
CMOS STATIC RAM WITH 3.3V SUPPLY
FEATURES
• High-speed access time:
• CMOS low power operation
• Low stand-by power:
• TTL compatible interface levels
• Single 3.3V power supply
• Fully static operation: no clock or refresh
• Three state outputs
• Data control for upper and lower bytes
• Industrial temperature available
— 10, 12 ns
— Less than 5 m
required
A
(typ.) CMOS stand-by
Lower Byte
Upper Byte
I/O8-I/O15
I/O0-I/O7
A0-A17
VDD
GND
WE
CE
OE
UB
LB
DECODER
CIRCUIT
CONTROL
CIRCUIT
DATA
I/O
1-800-379-4774
DESCRIPTION
The
static RAM organized as 262,144 words by 16 bits. It is
fabricated using
ogy. This highly reliable process coupled with innovative
circuit design techniques, yields high-performance and low
power consumption devices.
When CE is HIGH (deselected), the device assumes a
standby mode at which the power dissipation can be
reduced down with CMOS input levels.
Easy memory expansion is provided by using Chip Enable
and Output Enable inputs, CE and OE. The active LOW
Write Enable (WE) controls both writing and reading of the
memory. A data byte allows Upper Byte (UB) and Lower
Byte (LB) access.
The IS61LV25616AL is packaged in the JEDEC standard
44-pin 400-mil SOJ, 44-pin TSOP Type II, 44-pin LQFP and
48-pin Mini BGA (8mm x 10mm).
ISSI
MEMORY ARRAY
COLUMN I/O
IS61LV25616AL is a high-speed, 4,194,304-bit
256K x 16
ISSI
's high-performance CMOS technol-
ISSI
FEBRUARY 2003
®
1

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IS61LV25616AL-10B Summary of contents

Page 1

... Output Enable inputs, CE and OE. The active LOW Write Enable (WE) controls both writing and reading of the memory. A data byte allows Upper Byte (UB) and Lower Byte (LB) access. The IS61LV25616AL is packaged in the JEDEC standard 44-pin 400-mil SOJ, 44-pin TSOP Type II, 44-pin LQFP and 48-pin Mini BGA (8mm x 10mm). 256K x 16 ...

Page 2

... IS61LV25616AL TRUTH TABLE Mode Not Selected X H Output Disabled Read Write PIN CONFIGURATIONS 44-Pin TSOP (Type II) and SOJ I/O0 7 I/O1 8 I/O2 9 I/O3 10 VDD 11 GND ...

Page 3

... IS61LV25616AL PIN CONFIGURATIONS 44-Pin LQFP I/ I/O1 4 I/O2 5 I/O3 TOP VIEW 6 VDD 7 GND 8 I/O4 9 I/O5 10 I/ PIN DESCRIPTIONS A0-A17 Address Inputs I/O0-I/O15 Data Inputs/Outputs CE Chip Enable Input OE Output Enable Input WE Write Enable Input ...

Page 4

... IS61LV25616AL ABSOLUTE MAXIMUM RATINGS Symbol Parameter V Terminal Voltage with Respect to GND TERM T Storage Temperature STG P Power Dissipation T Note: 1. Stress greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied ...

Page 5

... IS61LV25616AL POWER SUPPLY CHARACTERISTICS Symbol Parameter Test Conditions I V Dynamic Operating Supply Current I OUT I TTL Standby Current (TTL Inputs TTL Standby Current (TTL Inputs CMOS Standby Current (CMOS Inputs) ...

Page 6

... IS61LV25616AL READ CYCLE SWITCHING CHARACTERISTICS Symbol Parameter t Read Cycle Time RC t Address Access Time AA t Output Hold Time OHA CE Access Time t ACE OE Access Time t DOE OE to High-Z Output t (2) HZOE OE to Low-Z Output t (2) LZOE CE to High-Z Output t (2 HZCE CE to Low-Z Output ...

Page 7

... IS61LV25616AL AC WAVEFORMS (1,2) (Address Controlled) ( READ CYCLE NO. 1 ADDRESS D OUT PREVIOUS DATA VALID (1,3) READ CYCLE NO. 2 ADDRESS LZCE LB LZB HIGH-Z D OUT V DD Supply Current Notes HIGH for a Read Cycle. 2. The device is continuously selected. OE, CE, UB Address is valid prior to or coincident with CE LOW transition. ...

Page 8

... IS61LV25616AL (1,3) READ CYCLE NO. 2 ADDRESS LZCE LB LZB HIGH-Z D OUT V DD Supply Current Notes HIGH for a Read Cycle. 2. The device is continuously selected. OE, CE, UB Address is valid prior to or coincident with CE LOW transition. WRITE CYCLE SWITCHING CHARACTERISTICS Symbol Parameter ...

Page 9

... IS61LV25616AL AC WAVEFORMS (CE Controlled HIGH or LOW) WRITE CYCLE NO. 1 ADDRESS UB DATA UNDEFINED OUT D IN Notes: 1. WRITE is an internally generated signal asserted during an overlap of the LOW states on the CE and WE inputs and at least one of the LB and UB inputs being in the LOW state. ...

Page 10

... IS61LV25616AL AC WAVEFORMS (WE Controlled LOW During Write Cycle) WRITE CYCLE NO. 3 ADDRESS LOW OE CE LOW UB DATA UNDEFINED OUT D IN WRITE CYCLE NO. 4 (LB, UB Controlled, Back-to-Back Write) ADDRESS OE CE LOW WE UB HZWE D OUT DATA UNDEFINED D IN Notes: 1 ...

Page 11

... IS61LV25616AL DATA RETENTION SWITCHING CHARACTERISTICS Symbol Parameter V V for Data Retention Data Retention Current DR t Data Retention Setup Time SDR t Recovery Time RDR Note 1: Typical values are measured DATA RETENTION WAVEFORM V DD 1.65V 1. GND Integrated Silicon Solution, Inc. — www.issi.com — ...

Page 12

... IS61LV25616AL-10K IS61LV25616AL-10LQ IS61LV25616AL-10B 12 IS61LV25616AL-12T IS61LV25616AL-12K IS61LV25616AL-12B Industrial Range: –40°C to +85°C Speed (ns) Order Part No. 10 IS61LV25616AL-10TI IS61LV25616AL-10KI IS61LV25616AL-10LQI IS61LV25616AL-10BI 12 IS61LV25616AL-12TI IS61LV25616AL-12KI 12 Package TSOP (Type II) 400-mil SOJ LQFP Mini BGA (8mm x 10mm) TSOP (Type II) 400-mil SOJ Mini BGA (8mm x 10mm) Package ...

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