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GSI Technology - 72Mb SigmaQuad-II Burst

Numéro de référence GS8662Q08E-167
Description 72Mb SigmaQuad-II Burst
Fabricant GSI Technology 
Logo GSI Technology 





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GS8662Q08E-167 fiche technique
165-Bump BGA
Commercial Temp
Industrial Temp
Preliminary
GS8662Q08/09/18w/3w6wE.D-3at0a0Sh/2ee5t04U/2.c0o0m/167
72Mb SigmaQuad-II
Burst of 2 SRAM
300 MHz–167 MHz
1.8 V VDD
1.8 V and 1.5 V I/O
Features
• Simultaneous Read and Write SigmaQuad™ Interface
• JEDEC-standard pinout and package
• Dual Double Data Rate interface
• Byte Write controls sampled at data-in time
• 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
• 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, and 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
SigmaQuadFamily Overview
The GSQ8662Q08/09/18/36E are built in compliance with
the SigmaQuad-II SRAM pinout standard for Separate I/O
synchronous SRAMs. They are 75,497,472-bit (72Mb)
SRAMs. The GSQ8662Q08/09/18/36E SigmaQuad 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 GSQ8662Q08/09/18/36E SigmaQuad-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
Bottom View
165-Bump, 15 mm x 17 mm BGA
1 mm Bump Pitch, 11 x 15 Bump Array
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.
Because Separate I/O SigmaQuad-II B2 RAMs always transfer
data in two packets, A0 is internally set to 0 for the first read or
write transfer, and automatically incremented by 1 for the next
transfer. Because the LSB is tied off internally, the address
field of a SigmaQuad-II B2 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
tKHKH
tKHQV
-300
3.3 ns
0.45 ns
-250
4.0 ns
0.45 ns
-200
5.0 ns
0.45 ns
-167
6.0 ns
0.5 ns
Rev: 1.01 9/2005
1/35
Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com.
© 2005, GSI Technology

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