IDT70V9269L15PRFI IDT [Integrated Device Technology], IDT70V9269L15PRFI Datasheet - Page 17

• Manufacturer Part Number: IDT70V9269L15PRFI
• Description: HIGH-SPEED 3.3V 32K x 16 SYNCHRONOUS DUAL-PORT STATIC RAM
• Manufacturer: IDT [Integrated Device Technology]

Functional Description
RAM 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.
bus interfacing. Counter enable inputs are also provided to staff 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 IDT70V9279/69's for depth
expansion configurations. When the Pipelined output mode is enabled, two
cycles are required with CE
outputs.
NOTE:
1. A
IDT70V9279/69S/L
High-Speed 32/16K x 16 Dual-Port Synchronous Static RAM
The IDT70V9279/69 provides a true synchronous Dual-Port Static
An asynchronous output enable is provided to ease asynchronous
A HIGH on CE
15
is for IDT70V9279. A
A
0
15
or a LOW on CE
/A
14 (1)
14
is for IDT70V9269.
0
LOW and CE
1
for one clock cycle will power down
Control Inputs
IDT70V9279/69
IDT70V9279/69
Control Inputs
1
Figure 4. Depth and Width Expansion with IDT70V9279/69
HIGH to re-activate the
CE
CE
CE
CE
1
0
0
1
V
6.42
DD
17
Depth and Width Expansion
I) in order to facilitate rapid and simple depth expansion with no require-
ments for external logic. Figure 4 illustrates how to control the varioius chip
enables in order to expand two devices in depth.
expanded width, as indicated in Figure 4. Since the banks are allocated
at the discretion of the user, the external controller can be set up to drive
the input signals for the various devices as required to allow for 32-bit or
wider applications.
IDT70V9279/69
Control Inputs
IDT70V9279/69
Control Inputs
The IDT70V9279/69 features dual chip enables (refer to Truth Table
The IDT70V9279/69 can also be used in applications requiring
Industrial and Commercial Temperature Ranges
CE
CE
CE
CE
3743 drw 18
1
0
0
1
V
DD
CNTRST
CLK
ADS
CNTEN
R/W
LB, UB
OE
,