参数资料
型号: IDT7054L20PRF8
厂商: IDT, Integrated Device Technology Inc
文件页数: 1/11页
文件大小: 0K
描述: IC SRAM 32KBIT 20NS 128TQFP
标准包装: 1,000
格式 - 存储器: RAM
存储器类型: SRAM - 四端口,异步
存储容量: 32K (4K x 8)
速度: 20ns
接口: 并联
电源电压: 4.5 V ~ 5.5 V
工作温度: 0°C ~ 70°C
封装/外壳: 128-LQFP
供应商设备封装: 128-TQFP(14x20)
包装: 带卷 (TR)
其它名称: 7054L20PRF8
HIGH-SPEED
4K x 8 FourPort TM
STATIC RAM
IDT7054S/L
High-speed access
Features
– Commercial: 20/25/35ns (max.)
– Industrial: 25ns (max.)
– Military: 25/35ns (max.)
TTL-compatible; single 5V (±10%) power supply
Available in 128 pin Thin Quad Flatpack and 108 pin PGA
packages
Industrial temperature range (–40°C to +85°C) is available
for selected speeds
Low-power operation
– IDT7054S
Active: 750mW (typ.)
Standby: 7.5mW (typ.)
– IDT7054L
Active: 750mW (typ.)
Standby: 1.5mW (typ.)
True FourPort memory cells which allow simultaneous
access of the same memory locations
Fully asynchronous operation from each of the four ports:
P1, P2, P3, and P4
Description
The IDT7054 is a high-speed 4K x 8 FourPort? Static RAM designed
to be used in systems where multiple access into a common RAM is
required. This FourPort Static RAM offers increased system performance
in multiprocessor systems that have a need to communicate in real time and
also offers added benefit for high-speed systems in which multiple access
is required in the same cycle.
The IDT7054 is also 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
Functional Block Diagram
R/ W P1
CE P1
OE P1
R/ W P4
CE P4
OE P4
I/O 0P1 -I/O 7P1
A 0P1 - A 11P1
COLUMN
I/O
PORT 1
ADDRESS
DECODE
LOGIC
MEMORY
COLUMN
I/O
PORT 4
ADDRESS
DECODE
LOGIC
I/O 0P4 -I/O 7P4
A 0P4 - A 11P4
ARRAY
PORT 2
PORT 3
A 0P2 - A 11P2
I/O 0P2 -I/O 7P2
OE P2
CE P2
R/ W P2
ADDRESS
DECODE
LOGIC
COLUMN
I/O
ADDRESS
DECODE
LOGIC
COLUMN
I/O
A 0P3 - A 11P3
I/O 0P3 -I/O 7P3
OE P3
CE P3
R/ W P3
3241 drw 01
JANUARY 2009
1
?2009 Integrated Device Technology, Inc.
DSC 3241/12
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