FEATURES
• High-speed access
—Military: 25/35/55/100ns (max.)
—Commercial: 25/35/55/100ns (max.)
—Commercial: 20ns 7130 in PLCC and TQFP
• Low-power operation
—IDT7130/IDT7140SA
—Active: 550mW (typ.)
—Standby: 5mW (typ.)
—IDT7130/IDT7140LA
—Active: 550mW (typ.)
—Standby: 1mW (typ.)
• MASTER IDT7130 easily expands data bus width to
16-or-more-bits using SLAVE IDT7140
• On-chip port arbitration logic (IDT7130 Only)
• BUSY output flag on IDT7130; BUSY input on IDT7140
• Interrupt flags for port-to-port communication
• Fully asynchronous operation from either port
• Battery backup operation–2V data retention (LA only)
• TTL-compatible, single 5V ±10% power supply
• Military product compliant to MIL-STD-883, Class B
• Standard Military Drawing #5962-86875
• Industrial temperature range (–40°C to +85°C) is available,
tested to military electrical specifications
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
DESCRIPTION
The IDT7130/IDT7140 are high-speed 1K x 8 Dual-Port
Static RAMs. The IDT7130 is designed to be used as a
stand-alone 8-bit Dual-Port RAM or as a "MASTER" Dual-
Port RAM together with the IDT7140 "SLAVE" Dual-Port in
16-bit-or-more word width systems. Using the IDT MASTER/
SLAVE Dual-Port RAM approach in 16-or-more-bit
memory system applications results in full-speed, error-free
operation without the need for additional discrete logic.
Both devices provide 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. 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 IDT''''s CMOS high-performance technology,
these devices typically operate on only 550mW of
power. Low-power (LA) versions offer battery backup data
retention capability, with each Dual-Port typically consuming
200mW from a 2V battery.
The IDT7130/IDT7140 devices are packaged in 48-pin
sidebraze or plastic DIPs, LCCs, or flatpacks, 52-pin PLCC,
and 64-pin TQFP and STQFP. Military grade product is
manufactured in compliance with the latest revision of MILSTD-
883, Class B, making it ideally suited to military temperature
applications demanding the highest level of performance
and reliability.
FUNCTIONAL BLOCK DIAGRAM
6.01 1
MILITARY AND COMMERCIAL TEMPERATURE RANGES OCTOBER 1996
©1996 Integrated Device Technology, Inc. DSC-2689/7
I/O
Control
Address
Decoder
MEMORY
ARRAY
ARBITRATION
and
INTERRUPT
LOGIC
Address
Decoder
I/O
Control
R/WL
CEL