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GS8662T09GE-250I 데이터시트(PDF) 1 Page - GSI Technology

부품명 GS8662T09GE-250I
상세설명  72Mb SigmaCIO DDR-II Burst of 2 SRAM
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제조업체  GSI [GSI Technology]
홈페이지  http://www.gsitechnology.com
Logo GSI - GSI Technology

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Preliminary
GS8662T08/09/18/36E-333/300/267*/250/200/167
72Mb SigmaCIO DDR-II
Burst of 2 SRAM
333 MHz–167 MHz
1.8 V VDD
1.8 V and 1.5 V I/O
165-Bump BGA
Commercial Temp
Industrial Temp
Rev: 1.01 9/2005
1/37
© 2005, GSI Technology
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
Features
• Simultaneous Read and Write SigmaCIO™ Interface
• Common I/O bus
• JEDEC-standard pinout and package
• Double Data Rate interface
• Byte Write (x36 and x18) and Nybble Write (x8) function
• Burst of 2 Read and Write
• 1.8 V +100/–100 mV core power supply
• 1.5 V or 1.8 V HSTL Interface
• Pipelined read operation with self-timed Late Write
• Fully coherent read and write pipelines
• ZQ pin for programmable output drive strength
• IEEE 1149.1 JTAG-compliant Boundary Scan
• Pin-compatible with present 9Mb, 18Mb, 36Mb and future
144Mb devices
• 165-bump, 15 mm x 17 mm, 1 mm bump pitch BGA package
• RoHS-compliant 165-bump BGA package available
SigmaCIO™ Family Overview
The GS8662T08/09/18/36E are built in compliance with the
SigmaCIO DDR-II SRAM pinout standard for Common I/O
synchronous SRAMs. They are 75,497,472-bit (72Mb)
SRAMs. The GS8662T08/09/18/36E SigmaCIO SRAMs are
just one element in a family of low power, low voltage HSTL
I/O SRAMs designed to operate at the speeds needed to
implement economical high performance networking systems.
Clocking and Addressing Schemes
The GS8662T08/09/18/36E SigmaCIO DDR-II SRAMs are
synchronous devices. They employ two input register clock
inputs, K and K. K and K are independent single-ended clock
inputs, not differential inputs to a single differential clock input
buffer. The device also allows the user to manipulate the
output register clock inputs quasi independently with the C and
C clock inputs. C and C are also independent single-ended
clock inputs, not differential inputs. If the C clocks are tied
high, the K clocks are routed internally to fire the output
registers instead.
Common I/O x36 and x18 SigmaCIO DDR-II B2 RAMs
always transfer data in two packets. When a new address is
loaded, A0 presets an internal 1 bit address counter. The
counter increments by 1 (toggles) for each beat of a burst of
two data transfer.
Common I/O x8 SigmaCIO DDR-II B2 RAMs always transfer
data in two packets. When a new address is loaded, the LSB
is internally set to 0 for the first read or write transfer, and
incremented by 1 for the next transfer. Because the LSB is
tied off internally, the address field of a x8 SigmaCIO DDR-II
B4 RAM is always one address pin less than the advertised
index depth (e.g., the 4M x 18 has a 2048K addressable index).
Parameter Synopsis
-333
-300
-267*
-250
-200
-167
tKHKH
3.0 ns
3.3 ns
3.75 ns
4.0 ns
5.0 ns
6.0 ns
tKHQV
0.45 ns
0.45 ns
0.45 ns
0.45 ns
0.45 ns
0.5 ns
* The 267 MHz speed bin is only available on the x18 part.
165-Bump, 15 mm x 17 mm BGA
1 mm Bump Pitch, 11 x 15 Bump Array
Bottom View


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