©2018 Integrated Device Technology, Inc.
JANUARY 2018
DSC-3026/13
1
HIGH SPEED 3.3V
2K X 8 DUAL-PORT
STATIC RAM WITH
INTERRUPTS
IDT71V321S/L
F ea tures
◆◆
◆◆
◆
High-speed access
– Commercial & Industrial: 25/35/55ns (max.)
◆◆
◆◆
◆
Low-power operation
– IDT71V321S
— Active: 325mW (typ.)
— Standby: 5mW (typ.)
– IDT71V321L
— Active: 325mW (typ.)
— Standby: 1mW (typ.)
◆◆
◆◆
◆
Two INT flags for port-to-port communications
Functional Block Diagram
NOTES:
1. IDT71V321 (MASTER): BUSY is an output
2. BUSY and INT are totem-pole outputs.
◆◆
◆◆
◆
On-chip port arbitration logic (IDT71V321 only)
◆◆
◆◆
◆
BUSY output flag
◆◆
◆◆
◆
Fully asynchronous operation from either port
◆◆
◆◆
◆
Battery backup operation—2V data retention (L only)
◆◆
◆◆
◆
TTL-compatible, single 3.3V power supply
◆◆
◆◆
◆
Available in 52-pin PLCC, 64-pin TQFP and STQFP
packages
◆◆
◆◆
◆
Industrial temperature range (–40°C to +85°C) is available
for selected speeds
◆◆
◆◆
◆
Green parts available, see ordering information
I/O
Control
Address
Decoder
MEMORY
ARRAY
ARBITRATION
and
INTERRUPT
LOGIC
Address
Decoder
I/O
Control
R/W
L
CE
L
OE
L
BUSY
L
A
10L
A
0L
3026 drw 01
I/O
0L
-I/O
7L
CE
L
OE
L
R/W
L
INT
L
BUSY
R
I/O
0R
-I/O
7R
A
10R
A
0R
INT
R
CE
R
OE
R
(2)
(1,2) (1,2)
(2)
R/W
R
CE
R
OE
R
11
11
R/W
R
LEAD FINISH (SnPb) ARE IN EOL PROCESS - LAST TIME BUY EXPIRES JUNE 15, 2018