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PDF IS61LV25616L Data sheet ( Hoja de datos )
| Número de pieza | IS61LV25616L | |
| Descripción | 256K x 16 HIGH SPEED ASYNCHRONOUS CMOS STATIC RAM | |
| Fabricantes | ISSI | |
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IS61LV25616L
ISSI®
256K x 16 HIGH SPEED ASYNCHRONOUS
CMOS STATIC RAM WITH 3.3V SUPPLY
JUNE 2002
FEATURES
• High-speed access time:
— 10, 12, and 15 ns
• Low Active Power
— Less than 90mA (typ.) Active Current
• Low standby power:
— Less than 1 mA (typ.) CMOS standby
• TTL compatible interface levels
• Single 3.3V power supply
• Fully static operation: no clock or refresh
required
• Three state outputs
• Data control for upper and lower bytes
• Industrial temperature available
FUNCTIONAL BLOCK DIAGRAM
DESCRIPTION
The ISSI IS61LV25616L is a high-speed, 4,194,304-bit
static RAM organized as 262,144 words by 16 bits. It is
fabricated using ISSI's high-performance CMOS technol-
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 IS61LV25616L 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).
A0-A17
DECODER
VCC
GND
I/O0-I/O7
Lower Byte
I/O8-I/O15
Upper Byte
CE
OE
WE
UB
LB
I/O
DATA
CIRCUIT
CONTROL
CIRCUIT
256K x 16
MEMORY ARRAY
COLUMN I/O
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.
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. B
06/28/02
1
1 page  
IS61LV25616L
ISSI®
READ CYCLE SWITCHING CHARACTERISTICS(1) (Over Operating Range)
Symbol
tRC
tAA
tOHA
tACE
tDOE
tHZOE(2)
tLZOE(2)
tHZCE(2
tLZCE(2)
tBA
tHZB(2)
tLZB(2)
tPU
tPD
Parameter
Read Cycle Time
Address Access Time
Output Hold Time
CE Access Time
OE Access Time
OE to High-Z Output
OE to Low-Z Output
CE to High-Z Output
CE to Low-Z Output
LB, UB Access Time
LB, UB to High-Z Output
LB, UB to Low-Z Output
Power Up Time
Power Down Time
-10
Min. Max.
10 —
— 10
3—
— 10
—4
—4
0—
04
3—
—4
03
0—
0—
— 10
-12
Min. Max.
12 —
— 12
3—
— 12
—5
—5
0—
06
3—
—5
04
0—
0—
— 12
-15
Min. Max.
15 —
— 15
3—
— 15
—7
06
0—
08
3—
—7
05
0—
0—
— 15
Notes:
1. Test conditions assume signal transition times of 3 ns or less, timing reference levels of 1.5V,
input pulse levels of 0V to 3.0V and output loading specified in Figure 1.
2. Tested with the load in Figure 2. Transition is measured ±500 mV from steady-state voltage.
Shaded area product in development
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
AC TEST CONDITIONS
Parameter
Input Pulse Level
Input Rise and Fall Times
Input and Output Timing
and Reference Level
Output Load
Unit
0V to 3.0V
3 ns
1.5V
See Figures 1 and 2
AC TEST LOADS
3.3V
319 Ω
3.3V
319 Ω
OUTPUT
OUTPUT
30 pF
Including
jig and
scope
353 Ω
5 pF
Including
jig and
scope
Figure 1
Figure 2
Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. B
06/28/02
353 Ω
1
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5
5 Page 
IS61LV25616L
ISSI®
ORDERING INFORMATION
Commercial Range: 0°C to +70°C
Speed
(ns)
10
12
15
Order Part No.
Package
IS61LV25616L-10T TSOP (Type II)
IS61LV25616L-10K 400-mil SOJ
IS61LV25616L-10LQ LQFP
IS61LV25616L-10B Mini BGA (8mm x 10mm)
IS61LV25616L-12T TSOP (Type II)
IS61LV25616L-12K 400-mil SOJ
IS61LV25616L-12LQ LQFP
IS61LV25616L-12B Mini BGA (8mm x 10mm)
IS61LV25616L-15T TSOP (Type II)
IS61LV25616L-15K 400-mil SOJ
Industrial Range: –40°C to +85°C
1
Speed
(ns)
10
12
15
Order Part No.
Package
IS61LV25616L-10TI TSOP (Type II)
IS61LV25616L-10KI 400-mil SOJ
IS61LV25616L-10LQI LQFP
IS61LV25616L-10BI Mini BGA (8mm x 10mm)
IS61LV25616L-12TI TSOP (Type II)
IS61LV25616L-12KI 400-mil SOJ
IS61LV25616L-12LQI LQFP
IS61LV25616L-12BI Mini BGA (8mm x 10mm)
IS61LV25616L-15TI TSOP (Type II)
IS61LV25616L-15KI 400-mil SOJ
2
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Integrated Silicon Solution, Inc. — www.issi.com — 1-800-379-4774
Rev. B
06/28/02
11
11 Page | ||
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| PDF Descargar | [ Datasheet IS61LV25616L.PDF ] | |
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