IDT7054S_15 Datasheet, PDF (1/11 Pages) Integrated Device Technology – HIGH-SPEED 4K x 8 FourPort STATIC RAM

HIGH-SPEED
4K x 8 FourPort^TM
STATIC RAM
IDT7054S/L
Features
◆ _{High-speed access}
– Commercial: 20/25/35ns (max.)
– Industrial: 25ns (max.)
◆ _{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
◆ _{TTL-compatible; single 5V (±10%) power supply}
◆ _{Available in 128 pin Thin Quad Flatpack package}
◆ _{Industrial temperature range (–40°C to +85°C) is available}
for selected speeds
◆ _{Green parts available, see ordering information}
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
externally arbitrated or withstand contention when all ports simulta-
neously access the same FourPort RAM location.
The IDT7054 provides four independent ports with separate control,
Functional Block Diagram
R/WP1
CEP1
R/WP4
CEP4
OEP1
I/O0P1-I/O7P1
COLUMN
I/O
COLUMN
I/O
OEP4
I/O0P4-I/O7P4
A0P1 - A11P1
A0P2 - A11P2
PORT 1
ADDRESS
DECODE
LOGIC
PORT 2
ADDRESS
DECODE
LOGIC
MEMORY
ARRAY
PORT 4
ADDRESS
DECODE
LOGIC
PORT 3
ADDRESS
DECODE
LOGIC
A0P4 - A11P4
A0P3 - A11P3
I/O0P2-I/O7P2
OEP2
CEP2
R/WP2
COLUMN
I/O
COLUMN
I/O
1
©2015 Integrated Device Technology, Inc.
I/O0P3-I/O7P3
OEP3
CEP3
R/WP3
3241 drw 01
FEBRUARY 2015
DSC 3241/13