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PDF IS62C256AL Data sheet ( Hoja de datos )
| Número de pieza | IS62C256AL | |
| Descripción | 32K x 8 LOW POWER CMOS STATIC RAM | |
| Fabricantes | Integrated Silicon Solution | |
| Logotipo |  |
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IS65C256AL
IS62C256AL
32K x 8 LOW POWER CMOS STATIC RAM
ISSI®
www.DataSheet4U.com
MARCH 2006
FEATURES
• Access time: 25 ns, 45 ns
• Low active power: 200 mW (typical)
• Low standby power
— 150 µW (typical) CMOS standby
— 15 mW (typical) operating
• Fully static operation: no clock or refresh
required
• TTL compatible inputs and outputs
• Single 5V power supply
• Lead-free available
• Industrial and Automotive temperatures avail-
able
FUNCTIONAL BLOCK DIAGRAM
DESCRIPTION
The ISSI IS62C256AL/IS65C256AL is a low power,
32,768 word by 8-bit CMOS static RAM. It is fabricated
using ISSI's high-performance, low power CMOS tech-
nology.
When CE is HIGH (deselected), the device assumes a
standby mode at which the power dissipation can be
reduced down to 150 µW (typical) at CMOS input levels.
Easy memory expansion is provided by using an active
LOW Chip Select (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 IS62C256AL/IS65C256AL is pin compatible with
other 32Kx8 SRAMs in plastic SOP or TSOP (Type I)
package.
A0-A14
VDD
GND
I/O0-I/O7
DECODER
32K X 8
MEMORY ARRAY
I/O
DATA
CIRCUIT
COLUMN I/O
CE
OE
CONTROL
CIRCUIT
WE
Copyright © 2006 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. A
03/17/06
1
1 page  
IS65C256AL
IS62C256AL
ISSI ®
www.DataSheet4U.com
READ CYCLE SWITCHING CHARACTERISTICS(1) (Over Operating Range)
Symbol
tRC
tAA
tOHA
tACS
tDOE
tLZOE(2)
tHZOE(2)
tLZCS(2)
tHZCS(2)
tPU(3)
tPD(3)
Parameter
Read Cycle Time
Address Access Time
Output Hold Time
CE Access Time
OE Access Time
OE to Low-Z Output
OE to High-Z Output
CE to Low-Z Output
CE to High-Z Output
CE to Power-Up
CE to Power-Down
-25 ns
Min. Max.
25 —
— 25
2—
— 25
— 13
0—
0 12
3—
0 12
0—
— 20
-45 ns
Min. Max.
45 —
— 45
2—
— 45
— 25
0—
0 20
3—
0 20
0—
— 30
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Notes:
1. Test conditions assume signal transition times of 5 ns or less, timing reference levels of 1.5V, input pulse levels of 0 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. Not 100% tested.
3. Not 100% tested.
AC TEST CONDITIONS
Parameter
Input Pulse Level
Input Rise and Fall Times
Input and Output Timing
and Reference Levels
Output Load
Unit
0V to 3.0V
3 ns
1.5V
See Figures 1 and 2
AC TEST LOADS
5V
480 Ω
OUTPUT
100 pF
Including
jig and
scope
255 Ω
Figure 1.
480 Ω
5V
OUTPUT
5 pF
Including
jig and
scope
Figure 2.
255 Ω
Integrated Silicon Solution, Inc. — 1-800-379-4774
Rev. A
03/17/06
5
5 Page 
PACKAGING INFORMATION
Plastic TSOP - 28-pins
Package Code: T (Type I)
1
ISSI ®
www.DataSheet4U.com
EH
N
D
S
SEATING PLANE
A
L
e B A1
αC
Plastic TSOP (T—Type I)
Millimeters
Inches
Symbol Min Max
Min Max
Ref. Std.
No. Leads
28
A 1.00 1.20
0.037 0.047
A1 0.05 0.20
B 0.16 0.27
0.002 0.008
0.006 0.011
C 0.10 0.20
0.004 0.008
D 7.90 8.10
E 11.70 11.90
0.308 0.316
0.456 0.465
H 13.20 13.60
0.515 0.531
e 0.55 BSC
L 0.30 0.70
0.022 BSC
0.011 0.027
α 0° 5°
0° 5°
Notes:
1. Controlling dimension: millimeters, unless otherwise specified.
2. BSC = Basic lead spacing between centers.
3. Dimensions D and E do not include mold flash protrusions and
should be measured from the bottom of the package.
4. Formed leads shall be planar with respect to one another within
0.004 inches at the seating plane.
Integrated Silicon Solution, Inc.
PK13197T28 Rev. B 01/31/97
11 Page | ||
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| PDF Descargar | [ Datasheet IS62C256AL.PDF ] | |
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