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What is GS8170LW36AC-333?

This electronic component, produced by the manufacturer "GSI Technology", performs the same function as "(GS8170LW36AC / GS8170LW72AC) Late Write SigmaRAM".


GS8170LW36AC-333 Datasheet PDF - GSI Technology

Part Number GS8170LW36AC-333
Description (GS8170LW36AC / GS8170LW72AC) Late Write SigmaRAM
Manufacturers GSI Technology 
Logo GSI Technology Logo 


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GS8170LW36/72AC-350/333/300/250
209-Bump BGA
Commercial Temp
Industrial Temp
18Mb Σ1x1Lp CMOS I/O
Late Write SigmaRAM™
250 MHz–350 MHz
1.8 V VDD
1.8 V I/O
Features
• Late Write mode, Pipelined Read mode
• JEDEC-standard SigmaRAMpinout and package
• 1.8 V +150/–100 mV core power supply
• 1.8 V CMOS Interface
• ZQ controlled user-selectable output drive strength
• Dual Cycle Deselect
• Burst Read and Write option
• Fully coherent read and write pipelines
• Echo Clock outputs track data output drivers
• Byte write operation (9-bit bytes)
• 2 user-programmable chip enable inputs
• IEEE 1149.1 JTAG-compliant Serial Boundary Scan
• 209-bump, 14 mm x 22 mm, 1 mm bump pitch BGA package
• Pin-compatible with future 36Mb, 72Mb, and 144Mb
devices
• Pb-Free 209-bump BGA package available
SigmaRAM Family Overview
GS8170LW36/72A SigmaRAMs are built in compliance with
the SigmaRAM pinout standard for synchronous SRAMs.
They are 18,874,368-bit (18Mb) SRAMs. This family of wide,
very low voltage CMOS I/O SRAMs is designed to operate at
the speeds needed to implement economical high performance
networking systems.
ΣRAMs are offered in a number of configurations including
Late Write, Double Late Write, and Double Data Rate (DDR).
The logical differences between the protocols employed by
these RAMs mainly involve various approaches to write
cueing and data transfer rates. The ΣRAMfamily standard
allows a user to implement the interface protocol best suited to
the task at hand.
Bottom View
209-Bump, 14 mm x 22 mm BGA
1 mm Bump Pitch, 11 x 19 Bump Array
www.DataSheet.co.kr
Functional Description
Because SigmaRAMs are synchronous devices, address data
inputs and read/write control inputs are captured on the rising
edge of the input clock. Write cycles are internally self-timed
and initiated by the rising edge of the clock input. This feature
eliminates complex off-chip write pulse generation required by
asynchronous SRAMs and simplifies input signal timing.
ΣRAMs support pipelined reads utilizing a rising-edge-
triggered output register. They also utilize a Dual Cycle
Deselect (DCD) output deselect protocol.
ΣRAMs are implemented with high performance CMOS
technology and are packaged in a 209-bump BGA.
Parameter Synopsis
Key Fast Bin Specs
Cycle Time
Access Time
Symbol
tKHKH
tKHQV
- 350
2.86 ns
1.7 ns
Rev: 1.04 4/2005
1/32
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
© 2003, GSI Technology
Datasheet pdf - http://www.DataSheet4U.net/

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GS8170LW36AC-333 equivalent
GS8170LW36/72AC-350/333/300/250
Read Operations
Pipelined Read
Read operation is initiated when the following conditions are satisfied at the rising edge of clock: All three chip enables (E1, E2,
and E3) are active, the write enable input signal (W) is deasserted high, and ADV is asserted low. The address presented to the
address inputs is latched into the address register and presented to the memory core and control logic. The control logic determines
that a read access is in progress and allows the requested data to propagate to the input of the output register. At the next rising edge
of clock the read data is allowed to propagate through the output register and onto the output pins.
Single Data Rate Pipelined Read
Read
Deselect
Read
Read
Read
CK
Address
A
XX
C
D
E
F
ADV
/E1
/W
DQ
CQ
QA
www.DataSheet.co.kr
QC
Key
Hi-Z
Access
QD
Write Operations
Write operation occurs when the following conditions are satisfied at the rising edge of clock: All three chip enables (E1, E2, and
E3) are active, the write enable input signal (W) is asserted low, and ADV is asserted low.
Rev: 1.04 4/2005
5/32
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
© 2003, GSI Technology
Datasheet pdf - http://www.DataSheet4U.net/


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GS8170LW36AC-333The function is (GS8170LW36AC / GS8170LW72AC) Late Write SigmaRAM. GSI TechnologyGSI Technology

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