IDT70V3389S Integrated Device Technology, IDT70V3389S Datasheet - Page 15

• Manufacturer Part Number: IDT70V3389S
• Description: High-speed 3.3v 64k X 18 Synchronous Pipelined Dual-port Static Ram With 3.3v Or 2.5v Interface
• Manufacturer: Integrated Device Technology

interface. Registered inputs provide minimal set-up and hold times on
address, data, and all critical control inputs. All internal registers are clocked
on the rising edge of the clock signal, however, the self-timed internal write
pulse is independent of the LOW to HIGH transition of the clock signal.
chronous bus interfacing. Counter enable inputs are also provided to stall
the operation of the address counters for fast interleaved
memory applications.
the internal circuitry to reduce static power consumption. Multiple chip
enables allow easier banking of multiple IDT70V3389s for depth expan-
sion configurations. Two cycles are required with CE
HIGH to re-activate the outputs.
IDT70V3389S
High-Speed 64K x 18 Dual-Port Synchronous Pipelined Static RAM
The IDT70V3389 provides a true synchronous Dual-Port Static RAM
An asynchronous output enable is provided to ease asyn-
A HIGH on CE
A
16
0
or a LOW on CE
Control Inputs
Control Inputs
IDT70V3389
IDT70V3389
1
for one clock cycle will power down
Figure 4. Depth and Width Expansion with IDT70V3389
CE
CE
CE
CE
0
LOW and CE
0
1
1
0
V
DD
6.42
1
Control Inputs
Control Inputs
IDT70V3389
IDT70V3389
15
Table I) in order to facilitate rapid and simple depth expansion with no
requirements for external logic. Figure 4 illustrates how to control the
various chip enables in order to expand two devices in depth.
width, as indicated in Figure 4. Through combining the control signals, the
devices can be grouped as necessary to accommodate applications
needing 36-bits or wider.
The IDT70V3389 features dual chip enables (refer to Truth
The IDT70V3389 can also be used in applications requiring expanded
Industrial and Commercial Temperature Ranges
CE
CE
CE
CE
4832 drw 14
0
1
1
0
V
DD
UB, LB
R/W,
OE,
CLK,
ADS,
CNTRST,
CNTEN
.