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IS65WV2568EALLのメーカーはISSIです、この部品の機能は「ULTRA LOW POWER CMOS STATIC RAM」です。 |
部品番号 | IS65WV2568EALL |
| |
部品説明 | ULTRA LOW POWER CMOS STATIC RAM | ||
メーカ | ISSI | ||
ロゴ | |||
このページの下部にプレビューとIS65WV2568EALLダウンロード(pdfファイル)リンクがあります。 Total 16 pages
IS62/65WV2568EALL
IS62/65WV2568EBLL
256Kx8 LOW VOLTAGE,
ULTRA LOW POWER CMOS STATIC RAM
PRELIMINARY INFORMATION
OCTOBER 2014
KEY FEATURES
High-speed access time: 45ns, 55ns
CMOS low power operation
– 36 mW (typical) operating
– 9 µW (typical) CMOS standby
TTL compatible interface levels
Single power supply
–1.65V-2.2V VDD (IS62/65WV2568EALL)
– 2.2V-3.6V VDD (IS62/65WV2568EBLL)
Three state outputs
Industrial and Automotive temperature support
Lead-free available
DESCRIPTION
The ISSI IS62/65WV2568EALL/EBLL are high-speed,
2M bit static RAMs organized as 256K words by 8 bits.
It is fabricated using ISSI's high-performance CMOS
technology. This highly reliable process coupled with
innovative circuit design techniques, yields high-
performance and low power consumption devices.
When
is HIGH (deselected) or when CS2 is
LOW (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. The active LOW
Write Enable
controls both writing and reading
of the memory.
The IS62/65WV2568EALL/EBLL are packaged in the
JEDEC standard 32-pin TSOP (TYPE I), sTSOP
(TYPE I), and 36-pin mini BGA..
FUNCTIONAL BLOCK DIAGRAM
A0 – A17
VDD
GND
I/O0 – I/O7
DECODER
256K x 8
MEMORY
ARRAY
I/O
DATA
CIRCUIT
COLUMN I/O
CS2
CS1#
OE#
WE#
CONTROL
CIRCUIT
Copyright © 2014 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. does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can
reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such
applications unless Integrated Silicon Solution, Inc. receives written assurance to its satisfaction, that:
a.) the risk of injury or damage has been minimized;
b.) the user assume all such risks; and
c.) potential liability of Integrated Silicon Solution, Inc is adequately protected under the circumstances
Integrated Silicon Solution, Inc.- www.issi.com
Rev. 0A
09/26/2014
1
1 Page IS62/65WV2568EALL
IS62/65WV2568EBLL
FUNCTION DESCRIPTION
SRAM is one of random access memories. SRAM has three different modes supported. Each function is described
below with Truth Table.
STANDBY MODE
Device enters standby mode when deselected (
HIGH or CS2 LOW ). The input and output pins (I/O0-7) are
placed in a high impedance state. CMOS input in this mode will maximize saving power.
WRITE MODE
Write operation issues with Chip selected (
LOW and CS2 HIGH) and Write Enable ( ) input LOW. The input
and output pins(I/O0-7) are in data input mode. Output buffers are closed during this time even if is LOW.
READ MODE
Read operation issues with Chip selected (
LOW and CS2 HIGH) and Write Enable ( ) input HIGH. When
is LOW, output buffer turns on to make data output. Any input to I/O pins during READ mode is not permitted.
In the READ mode, output buffers can be turned off by pulling HIGH. In this mode, internal device operates as
READ but I/Os are in a high impedance state. Since device is in READ mode, active current is used.
TRUTH TABLE
Mode
CS2
Not Selected
H
X
X
XLX
Output Disabled L H H
Write
L HH
Read
LHL
I/O0-I/O7 VDD Current
X
High-Z
ISB1,ISB2
X High-Z
H High-Z
ICC
L DIN
X DOUT
ICC
ICC
Integrated Silicon Solution, Inc.- www.issi.com
Rev. 0A
09/26/2014
3
3Pages IS62/65WV2568EALL
IS62/65WV2568EBLL
IS62(5)WV2568EALL DC ELECTRICAL CHARACTERISTICS-II FOR POWER
(OVER THE OPERATING RANGE)
Symbol Parameter
Test Conditions
Grade
Typ. Max.
ICC VDD Dynamic
Operating
VDD=VDD(max), IOUT=0mA, f=fMAX
Com.
Ind.
12 15
- 18
Supply Current
Auto.
- 25
ICC1 VDD Static
Operating
VDD=VDD(max), IOUT = 0mA, f=0Hz
Com.
Ind.
13
-3
Supply Current
Auto.
-4
ISB2
CMOS Standby
Current (CMOS
Inputs)
VDD=VDD(max),
(1) 0V ≤ CS2 ≤ 0.2V
or
(2) ≥ VDD - 0.2V, CS2 ≥ VDD - 0.2V
, f= 0Hz
Com.
Ind.
Auto.
25
- 12
- 25
Note:
Typical values are included for reference only and are not guaranteed or tested. Typical values are measured at VDD = VDD(typ), TA = 25C
Unit
mA
mA
µA
µA
µA
IS62(5)WV2568EBLL DC ELECTRICAL CHARACTERISTICS-II FOR POWER
(OVER THE OPERATING RANGE)
Symbol Parameter
Test Conditions
Grade
Typ. Max.
ICC VDD Dynamic
Operating
VDD=VDD(max), IOUT=0mA, f=fMAX
Com.
Ind.
12 15
- 18
Supply Current
Auto.
- 25
ICC1 VDD Static
Operating
VDD=VDD(max), IOUT = 0mA, f=0Hz
Com.
Ind.
13
-3
Supply Current
Auto.
-4
ISB2
CMOS Standby
Current (CMOS
Inputs)
VDD=VDD(max),
(1) 0V ≤ CS2 ≤ 0.2V
or
(2) ≥ VDD - 0.2V, CS2 ≥ VDD - 0.2V
, f= 0Hz
Com.
Ind.
Auto.
25
- 12
- 25
Note:
Typical values are included for reference only and are not guaranteed or tested. Typical values are measured at VDD = VDD(typ), TA = 25℃
Unit
mA
mA
µA
µA
µA
Integrated Silicon Solution, Inc.- www.issi.com
Rev. 0A
09/26/2014
6
6 Page | |||
ページ | 合計 : 16 ページ | ||
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PDF ダウンロード | [ IS65WV2568EALL データシート.PDF ] |
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部品番号 | 部品説明 | メーカ |
IS65WV2568EALL | ULTRA LOW POWER CMOS STATIC RAM | ISSI |