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參數(shù)資料
| 型號： | AS7C34098A |
| 廠商： | Alliance Semiconductor Corporation |
| 英文描述： | Octal Buffers/Drivers With 3-State Outputs 20-SOIC -40 to 85 |
| 中文描述： | 3.3伏256畝× 16 CMOS SRAM的 |
| 文件頁數(shù)： | 2/10頁 |
| 文件大?。?/td> | 151K |
| 代理商： | AS7C34098A |
AS7C34098A
8/17/04,v. 2.1
Alliance Semiconductor
P. 2 of 10
Functional description
The AS7C34098A is a high-performance CMOS 4,194,304-bit Static Random Access Memory (SRAM) device organized as
262,144 words × 16 bits. It is designed for memory applications where fast data access, low power, and simple interfacing are
desired.
Equal address access and cycle times (t
AA
, t
RC
, t
WC
) of 10/12/15/20 ns with output enable access times (t
OE
) of 4/5/6/7 ns are
ideal for high-performance applications. The chip enable input CE permits easy memory expansion with multiple-bank
memory systems.
When CE is high the device enters standby mode. The device is guaranteed not to exceed 28.8mW power consumption in
CMOS standby mode. A write cycle is accomplished by asserting write enable (WE) and chip enable (CE). Data on the input
pins I/O1–I/O16 is written on the rising edge of WE (write cycle 1) or CE (write cycle 2). To avoid bus contention, external
devices should drive I/O pins only after outputs have been disabled with output enable (OE) or write enable (WE).
A read cycle is accomplished by asserting output enable (OE) and chip enable (CE), with write enable (WE) high. The chip
drives I/O pins with the data word referenced by the input address. When either chip enable or output enable is inactive, or
write enable is active, output drivers stay in high-impedance mode.
The device provides multiple center power and ground pins, and separate byte enable controls, allowing individual bytes to be
written and read. LB controls the lower bits, I/O1–I/O8, and UB controls the higher bits, I/O9–I/O16.
All chip inputs and outputs are TTL- and CMOS-compatible, and operation is for 3.3V (AS7C34098A) supply. The device is
available in the JEDEC standard 400-mL, 44-pin SOJ, TSOP 2.
Note: Stresses 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 outside those indicated in the operational sections of this specification is not implied.
Exposure to absolute maximum rating conditions for extended periods may affect reliability.
Absolute maximum ratings
Parameter
Symbol
Min
Max
Unit
Voltage on V
CC
relative to GND
Voltage on any pin relative to GND
V
t1
V
t2
P
D
T
stg
T
bias
I
OUT
–0.50
+5.0
V
–0.50
V
CC
+0.50
1.5
V
Power dissipation
–
W
°
C
°
C
Storage temperature (plastic)
–65
+150
Ambient temperature with V
CC
applied
DC current into outputs (low)
–55
+125
–
±20
mA
Truth table
CE
WE
OE
LB
UB
I/O1–I/O8
I/O9–I/O16
Mode
H
X
X
X
X
High Z
High Z
Standby (I
SB
, I
SB1
)
L
H
H
X
X
High Z
High Z
Output disable (I
CC
)
L
X
X
H
H
L
H
L
L
H
D
OUT
High Z
Read (I
CC
)
H
L
High Z
D
OUT
L
L
D
OUT
D
OUT
L
L
X
L
H
D
IN
High Z
Write (I
CC
)
H
L
High Z
D
IN
L
L
D
IN
D
IN
Key: X = Don’t care, L = Low, H = High.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AS7C34098A-10JC | Octal Buffers/Drivers With 3-State Outputs 20-SOIC -40 to 85 |
| AS7C34098A-10JCN | 3.3 V 256 K x 16 CMOS SRAM |
| AS7C34098A-10JI | Octal Buffers/Drivers With 3-State Outputs 20-SO -40 to 85 |
| AS7C34098A-10JIN | Octal Buffers/Drivers With 3-State Outputs 20-SO -40 to 85 |
| AS7C34098A-10TC | 3.3 V 256 K x 16 CMOS SRAM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AS7C34098A-10BIN | 功能描述:靜態(tài)隨機存取存儲器 4M, 3.3V, 10ns, FAST 256K x 16 Asyn 靜態(tài)隨機存取存儲器 RoHS:否 制造商:Cypress Semiconductor 存儲容量:16 Mbit 組織:1 M x 16 訪問時間:55 ns 電源電壓-最大:3.6 V 電源電壓-最小:2.2 V 最大工作電流:22 uA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:TSOP-48 封裝:Tray |
| AS7C34098A-10BINTR | 功能描述:靜態(tài)隨機存取存儲器 4M, 3.3V, 10ns, FAST 256K x 16 Asyn 靜態(tài)隨機存取存儲器 RoHS:否 制造商:Cypress Semiconductor 存儲容量:16 Mbit 組織:1 M x 16 訪問時間:55 ns 電源電壓-最大:3.6 V 電源電壓-最小:2.2 V 最大工作電流:22 uA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:TSOP-48 封裝:Tray |
| AS7C34098A-10JCN | 功能描述:靜態(tài)隨機存取存儲器 4M, 3.3V, 10ns, FAST 256K x 16 Asyn 靜態(tài)隨機存取存儲器 RoHS:否 制造商:Cypress Semiconductor 存儲容量:16 Mbit 組織:1 M x 16 訪問時間:55 ns 電源電壓-最大:3.6 V 電源電壓-最小:2.2 V 最大工作電流:22 uA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:TSOP-48 封裝:Tray |
| AS7C34098A-10JCNTR | 功能描述:靜態(tài)隨機存取存儲器 4M, 3.3V, 10ns, FAST 256K x 16 Asyn 靜態(tài)隨機存取存儲器 RoHS:否 制造商:Cypress Semiconductor 存儲容量:16 Mbit 組織:1 M x 16 訪問時間:55 ns 電源電壓-最大:3.6 V 電源電壓-最小:2.2 V 最大工作電流:22 uA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:TSOP-48 封裝:Tray |
| AS7C34098A-10JIN | 功能描述:靜態(tài)隨機存取存儲器 4M, 3.3V, 10ns, FAST 256K x 16 Asyn 靜態(tài)隨機存取存儲器 RoHS:否 制造商:Cypress Semiconductor 存儲容量:16 Mbit 組織:1 M x 16 訪問時間:55 ns 電源電壓-最大:3.6 V 電源電壓-最小:2.2 V 最大工作電流:22 uA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:TSOP-48 封裝:Tray |
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