參數(shù)資料
型號(hào): IDT7134LA20L48I
廠商: Integrated Device Technology, Inc.
英文描述: HIGH-SPEED 4K x 8 DUAL-PORT STATIC SRAM
中文描述: 高速4K的× 8雙端口靜態(tài)隨機(jī)存取存儲(chǔ)器
文件頁數(shù): 1/11頁
文件大小: 160K
代理商: IDT7134LA20L48I
1
JUNE 1999
DSC-2720/9
IDT7134SA/LA
HIGH-SPEED
4K x 8 DUAL-PORT
STATIC SRAM
Features
N
High-speed access
Military: 25/35/45/55/70ns (max.)
Industrial: 55ns (max.)
Commercial: 20/25/35/45/55/70ns (max.)
N
Low-power operation
IDT7134SA
Active: 700mW (typ.)
Standby: 5mW (typ.)
IDT7134LA
Active: 700mW (typ.)
Standby: 1mW (typ.)
N
Fully asynchronous operation from either port
N
Battery backup operation2V data retention
N
TTL-compatible; single 5V (±10%) power supply
N
Available in 48-pin DIP, LCC, Flatpack and 52-pin PLCC
N
Military product compliant to MIL-PRF-38535 QML
N
Industrial temperature range (40°C to +85°C) is available for
selected speeds
Functional Block Diagram
COLUMN
I/O
COLUMN
I/O
MEMORY
ARRAY
LEFT SIDE
ADDRESS
DECODE
LOGIC
RIGHT SIDE
ADDRESS
DECODE
LOGIC
R/
W
L
CE
L
OE
L
A
0L
- A
11L
I/O
0L
- I/O
7L
2720 drw 01
A
0R
- A
11R
I/O
0R
- I/O
7R
OE
R
CE
R
R/
W
R
Description
The IDT7134 is a high-speed 4K x 8 Dual-Port Static RAM
designed to be used in systems where on-chip hardware port arbitration
is not needed. This part lends itself to those systems which cannot
tolerate wait states or are designed to be able to externally arbitrate or
withstand contention when both sides simultaneously access the
same Dual-Port RAM location.
The IDT7134 provides two independent ports with separate control,
address, and I/O pins that permit independent, asynchronous access
for reads or writes to any location in memory. It is the users responsibility
to ensure data integrity when simultaneously accessing the same
memory location from both ports. An automatic power down feature,
controlled by
CE
, permits the on-chip circuitry of each port to enter a
very low standby power mode.
Fabricated using IDTs CMOS high-performance technology, these
Dual-Port typically operate on only 700mW of power. Low-power (LA)
versions offer battery backup data retention capability, with each port
typically consuming 200μW from a 2V battery.
The IDT7134 is packaged on either a sidebraze or plastic 48-pin
DIP, 48-pin LCC, 52-pin PLCC and 48-pin Flatpack. Military grade
product is manufactured in compliance with the latest revision of MIL-
PRF-38535 QML, making it ideally suited to military temperature
applications demanding the highest level of performance and reliability.
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