HIGH-SPEED 3.3V
8K x 8 DUAL-PORT
STATIC RAM
Integrated Device Technology, Inc.
IDT70V05S/L
FEATURES:
• True Dual-Ported memory cells which allow simulta-
neous access of the same memory location
• High-speed access
— Commercial: 25/35/55ns (max.)
• Low-power operation
— IDT70V05S
Active: 350mW (typ.)
Standby: 3.5mW (typ.)
— IDT70V05L
Active: 350mW (typ.)
Standby: 1mW (typ.)
• IDT70V05 easily expands data bus width to 16 bits or
more using the Master/Slave select when cascading
more than one device
• M/
S
= H for
BUSY
output flag on Master
M/
S
= L for
BUSY
input on Slave
• Busy and Interrupt Flags
• On-chip port arbitration logic
• Full on-chip hardware support of semaphore signaling
between ports
• Fully asynchronous operation from either port
• Devices are capable of withstanding greater than 2001V
electrostatic discharge
• Battery backup operation—2V data retention
• LVTTL-compatible, single 3.3V (±0.3V) power supply
• Available in 68-pin PGA, 68-pin PLCC, and a 64-pin
TQFP
DESCRIPTION:
The IDT70V05 is a high-speed 8K x 8 Dual-Port Static
RAM. The IDT70V05 is designed to be used as a stand-alone
Dual-Port RAM or as a combination MASTER/SLAVE Dual-
Port RAM for 16-bit-or-more word systems. Using the IDT
MASTER/SLAVE Dual-Port RAM approach in 16-bit or wider
memory system applications results in full-speed, error-free
FUNCTIONAL BLOCK DIAGRAM
OE
L
R/
OE
R
R/
CE
L
W
L
CE
R
W
R
I/O
0L
- I/O
7L
I/O
Control
I/O
Control
I/O
0R
-I/O
7R
BUSY
L
(1,2)
BUSY
R
Address
Decoder
13
(1,2)
A
12L
A
0L
MEMORY
ARRAY
Address
Decoder
A
12R
A
0R
13
NOTES:
1. (MASTER):
BUSY
is output;
(SLAVE):
BUSY
is input.
2. BUSY outputs
and INT outputs
are non-tri-
stated push-pull.
OE
L
R/
CE
L
W
L
ARBITRATION
INTERRUPT
SEMAPHORE
LOGIC
CE
R
R/
OE
R
W
R
SEM
R
(2)
SEM
L
INT
L
(2)
M/
S
INT
R
2941 drw 01
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
COMMERCIAL TEMPERATURE RANGE
©1996 Integrated Device Technology, Inc.
For latest information contact IDT’s web site at www.idt.com or fax-on-demand at 408-492-8391.
OCTOBER 1996
6.35
DSC-2941/3
1
IDT [ INTEGRATED DEVICE TECHNOLOGY ]
