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SD18U128L PDF даташит

Спецификация SD18U128L изготовлена ​​​​«Soft Device» и имеет функцию, называемую «Ultra Low Power 128K x 8 CMOS SRAM».

Детали детали

Номер произв SD18U128L
Описание Ultra Low Power 128K x 8 CMOS SRAM
Производители Soft Device
логотип Soft Device логотип 

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SD18U128L Даташит, Описание, Даташиты
SD18U128
SD18U128L
Ultra Low Power
128K x 8 CMOS SRAM
Features
• Low-power consumption
- Active: 20mA at 70ns
- Stand-by: 5 µA (CMOS input/output)
1 µA CMOS input/output, L version
• Single +1.8to 2.2V Power Supply
• Equal access and cycle time
• 70/85/100/150 ns access time
• Easy memory expansion with CE1, CE2
and OE inputs
• 1.0V data retention mode
• TTL compatible, Tri-state input/output
• Automatic power-down when deselected
Functional Description
The SD18U128 is a low power CMOS Static RAM orga-
nized as 131,072 words by 8 bits. Easy memory expansion
is provided by an active LOW CE1, an active HIGH CE2,
an active LOW OE, and Tri-state I/O’s. This device has
an automatic power-down mode feature when deselected.
Writing to the device is accomplished by taking Chip
Enable 1 (CE1) with Write Enable (WE) LOW, and Chip
Enable 2 (CE2) HIGH. Reading from the device is per-
formed by taking Chip Enable 1 (CE1) with Output
Enable (OE) LOW while Write Enable (WE) and Chip
Enable 2 (CE2) is HIGH. The I/O pins are placed in a
high-impedance state when the device is deselected: the
outputs are disabled during a write cycle.
The SD18U128L comes with a 1V data retention feature
and Lower Standby Power. The SD18U128 is available in
a 32-pin 8 x 20 mm TSOP1 / STSOP / 48-fpBGA pack-
ages.
Logic Block Diagram
32-Pin TSOP1 / STSOP (See next page)http://www.DataSheet4U.net/
INPUT BUFFFEERR
AA00
AAA211
AA32
AA43 11002244
AA54
AA65
10XX24
A7
AA86
1024
AA97
A8
COLUMN DECODER
COLUMN DECODER
A10 A11 A12 A13 A14 A15 A16
A9 A10 A11 A12 A13 A14 A15 A16
II//OO87
I/O1
I/O0
CONTROL
CCOIRNCTURIOTL
CIRCUIT
OE
WE
OCEE1
WCEE2
CE1
CE2
A11
A9
A8
A13
WE
CE2
A15
Vcc
NC
A16
A14
A12
A7
A6
A5
A4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32 OE
31 A10
30 CE1
29 I/O8
28 I/O7
27 I/O6
26 I/O5
25 I/O4
24 GND
23 I/O3
22 I/O2
21 I/O1
20 A0
19 A1
18 A2
17 A3
Revised 12/2/98
20410 TOWN CENTER LANE, STE 270 s CUPERTINO, CA 95014 s TEL (408) 255-1262 s FAX (408) 255-1359
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SD18U128L Даташит, Описание, Даташиты
SD18U128/SD18U128L
Soft Device, Inc. SD28U128B
6
5
4
3
2
1
A B CD EFGH
TOP VIEW
http://www.DataSheet4U.net/
Top View
48-CSP Ball-Grid Array package(shading indicates no ball)
123456
A A0 A1 CE2 A3 A6 A8
B I/O4 A2 WE A4
A7 I/O0
C I/O5 NC NC A5 NC I/O1
D VSS NC NC NC NC VDD
E VDD NC NC NC NC VSS
F I/O6 NC NC NC NC I/O2
G I/O7 OE CE1 A16 A15 I/O3
H A9 A10 A11 A12 A13 A14
2
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SD18U128L Даташит, Описание, Даташиты
SD18U128/SD18U128L
Absolute Maximum Ratings *
Parameter
Voltage on Any Pin Relative to Gnd
Power Dissipation
Storage Temperature (Plastic)
Temperature Under Bias
Symbol
Vt
PT
Tstg
Tbias
Minimum
-0.5
-55
-40
Maximum
4.6
1.0
+150
+85
Unit
V
W
0C
0C
* Note: Stresses greater than those listed above Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rat-
ing only and functional operation of the device at these or any conditions outside those indicated in the operational sections of this specifica-
tion is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.
Truth Table
CE1
H
X
L
L
L
CE2
X
L
H
H
H
WE
X
X
H
H
L
* Key: X = Don’t Care, L = Low, H = High
OE
X
X
L
http://www.DataSheet4U.net/
H
X
Data
High-Z
High-Z
Data Out
High-Z
Data In
Mode
Standby
Standby
Active, Read
Active, Output Disable
Active, Write
Recommended Operating Conditions (TA = 00C to +700C / -400C to 850C**)
Parameter
Supply Voltage
Input Voltage
Symbol Min
Typ
Max
VCC 1.8 2.0
Gnd 0.0 0.0
2.2
0.0
VIH 1.6 - VCC + 0.2
VIL -0.5* -
0.4
* VIL min = -1.0V for pulse width less than tRC/2.
** For Industrial Temperature.
Unit
V
V
V
V
3
datasheet pdf - http://www.DataSheet4U.net/










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Номер в каталогеОписаниеПроизводители
SD18U128Ultra Low Power 128K x 8 CMOS SRAMSoft Device
Soft Device
SD18U128LUltra Low Power 128K x 8 CMOS SRAMSoft Device
Soft Device

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