参数资料
型号: IDT709279S15PF8
厂商: IDT, Integrated Device Technology Inc
文件页数: 16/18页
文件大小: 0K
描述: IC SRAM 512KBIT 15NS 100TQFP
标准包装: 750
格式 - 存储器: RAM
存储器类型: SRAM - 双端口,同步
存储容量: 512K (32K x 16)
速度: 15ns
接口: 并联
电源电压: 4.5 V ~ 5.5 V
工作温度: 0°C ~ 70°C
封装/外壳: 100-LQFP
供应商设备封装: 100-TQFP(14x14)
包装: 带卷 (TR)
其它名称: 709279S15PF8
IDT709279/69S/L
High-Speed 32/16K x 16 Synchronous Dual-Port Static RAM
A Functional Description
The IDT709279/69 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 asynchronous
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 IDT709279/69's for depth
expansion configurations. When the Pipelined output mode is enabled, two
cycles are required with CE 0 LOW and CE 1 HIGH to re-activate the
outputs.
A 15 /A 14 (1)
Preliminary
Industrial and Commercial Temperature Ranges
Depth and Width Expansion
The IDT709279/69 features dual chip enables (refer to Truth Table
I) in order to facilitate rapid and simple depth expansion with no require-
ments for external logic. Figure 4 illustrates how to control the various chip
enables in order to expand two devices in depth.
The IDT709279/69 can also be used in applications requiring ex-
panded 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.
IDT709279/69
CE 0
IDT709279/69
CE 0
Control Inputs
CE 1
V CC
Control Inputs
CE 1
V CC
IDT709279/69
CE 1
IDT709279/69
CE 1
Control Inputs
CE 0
Control Inputs
CE 0
CNTRST
CLK
ADS
CNTEN
,
NOTE:
1. A 14 is for IDT709269.
3243 drw 19
Figure 4. Depth and Width Expansion with IDT709279/69
16
6.42
R/ W
OE
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