参数资料
型号: IDT70V3569S6DR
厂商: IDT, Integrated Device Technology Inc
文件页数: 15/17页
文件大小: 0K
描述: IC SRAM 576KBIT 6NS 208QFP
标准包装: 6
格式 - 存储器: RAM
存储器类型: SRAM - 双端口,同步
存储容量: 576K(16K x 36)
速度: 6ns
接口: 并联
电源电压: 3.15 V ~ 3.45 V
工作温度: 0°C ~ 70°C
封装/外壳: 208-BFQFP
供应商设备封装: 208-PQFP(28x28)
包装: 托盘
其它名称: 70V3569S6DR
IDT70V3569S
High-Speed 16K x 36 Dual-Port Synchronous Pipelined Static RAM
Industrial and Commercial Temperature Ranges
Functional Description
The IDT70V3569 provides a true synchronous Dual-Port Static 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.
An asynchronous output enable is provided to ease asyn-
chronous bus interfacing. Counter enable inputs are also provided to stall
the operation of the address counters for fast interleaved
memory applications.
A HIGH on CE 0 or a LOW on CE 1 for one clock cycle will power down
the internal circuitry to reduce static power consumption. Multiple chip
enables allow easier banking of multiple IDT70V3569s for depth expan-
sion configurations. Two cycles are required with CE 0 LOW and CE 1
HIGH to re-activate the outputs.
A 15
Depth and Width Expansion
The IDT70V3569 features dual chip enables (refer to Truth
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.
The IDT70V3569 can also be used in applications requiring expanded
width, as indicated in Figure 4. Through combining the control signals, the
devices can be grouped as necessary to accommodate applications
needing 72-bits or wider.
IDT70V3569
CE 0
IDT70V3569
CE 0
Control Inputs
CE 1
V DD
Control Inputs
CE 1
V DD
IDT70V3569
CE 1
IDT70V3569
CE 1
Control Inputs
CE 0
Control Inputs
CE 0
BE ,
R/ W ,
OE ,
CLK,
Figure 4. Depth and Width Expansion with IDT70V3569
15
6.42
4831 drw 14
ADS ,
CNTRST ,
CNTEN
,
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