参数资料
型号: IDT70T3539MS133BCI8
厂商: IDT, Integrated Device Technology Inc
文件页数: 22/26页
文件大小: 0K
描述: IC SRAM 18MBIT 133MHZ 256BGA
标准包装: 1,000
格式 - 存储器: RAM
存储器类型: SRAM - 双端口,同步
存储容量: 18M(512K x 36)
速度: 133MHz
接口: 并联
电源电压: 2.4 V ~ 2.6 V
工作温度: -40°C ~ 85°C
封装/外壳: 256-LBGA
供应商设备封装: 256-CABGA(17x17)
包装: 带卷 (TR)
其它名称: 70T3539MS133BCI8
IDT70T3539M
High-Speed 2.5V 512K x 36 Dual-Port Synchronous Static RAM
Depth and Width Expansion
The IDT70T3539M 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.
A 19
IDT70T3539M CE 0
Industrial and Commercial Temperature Ranges
The IDT70T3539M 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.
IDT70T3539M CE 0
CE 1
Control Inputs
IDT70T3539M CE 1
V DD
CE 1
Control Inputs
IDT70T3539M CE 1
V DD
Control Inputs
CE 0
Control Inputs
CE 0
BE ,
R/ W ,
OE ,
CLK,
Figure 4. Depth and Width Expansion with IDT70T3539M
JTAG Functionality and Configuration
5678 drw 22
ADS ,
REPEAT ,
CNTEN
The IDT70T3539M is composed of two independent memory arrays,
and thus cannot be treated as a single JTAG device in the scan chain.
The two arrays (A and B) each have identical characteristics and
commands but must be treated as separate entities in JTAG operations.
. Please refer to Figure 5.
JTAG signaling must be provided serially to each array and utilize the
Register Sizes, and System Interface Parameter tables. Specifically,
commands for Array B must precede those for Array A in any JTAG
operations sent to the IDT70T3539M. Please reference Application Note
AN-411, "JTAG Testing of Multichip Modules" for specific instructions on
performing JTAG testing on the IDT70T3539M. AN-411 is available at
www.idt.com.
information provided in the Identification Register Definitions, Scan
IDT70T3539M
TDI
Array A
TDOA
TDIB
Array B
TDO
TCK
TMS
TRST
5678drw 23
Figure 5. JTAG Configuration for IDT70T3539M
6.42
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