70T3539MS133BC IDT, 70T3539MS133BC Datasheet - Page 22

• Manufacturer Part Number: 70T3539MS133BC
• Description: SRAM 512K X 36 STD-PWR, 2.5V DUAL PORT RAM
• Manufacturer: IDT
• Series: IDT70T3539Mr
• Type: Dual Port RAMr

Specifications of 70T3539MS133BC

• Memory Size: 18 Mbit
• Organization: 512 K x 36
• Access Time: 4.2 ns
• Supply Voltage - Max: 2.6 V
• Supply Voltage - Min: 2.4 V
• Maximum Operating Current: 740 mA
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: SMD/SMT
• Package / Case: BGA-256
• Interface: LVTTL
• Maximum Clock Frequency: 133 MHz
• Memory Type: Synchronous
• Part # Aliases: IDT70T3539MS133BC

.
JTAG Functionality and Configuration
Depth and Width Expansion
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.
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.
information provided in the Identification Register Definitions, Scan
IDT70T3539M
High-Speed 2.5V 512K x 36 Dual-Port Synchronous Static RAM
The IDT70T3539M features dual chip enables (refer to Truth
The IDT70T3539M is composed of two independent memory arrays,
JTAG signaling must be provided serially to each array and utilize the
TRST
TCK
TMS
A
19
TDI
Control Inputs
Control Inputs
IDT70T3539M CE
IDT70T3539M
Figure 4. Depth and Width Expansion with IDT70T3539M
Array A
Figure 5. JTAG Configuration for IDT70T3539M
CE
CE
CE
0
1
1
0
TDOA
V
6.42
DD
22
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.
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.
Control Inputs
Control Inputs
IDT70T3539M
IDT70T3539M
The IDT70T3539M can also be used in applications requiring
TDIB
Industrial and Commercial Temperature Ranges
IDT70T3539M
Array B
CE
CE
CE
CE
5678 drw 22
0
1
1
0
5678drw 23
V
DD
TDO
BE,
R/W,
OE,
CLK,
ADS,
REPEAT,
CNTEN