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GS8342D20BGD Dataheets PDF



Part Number GS8342D20BGD
Manufacturers GSI Technology
Logo GSI Technology
Description 36Mb SigmaQuad-II+ Burst of 4 SRAM
Datasheet GS8342D20BGD DatasheetGS8342D20BGD Datasheet (PDF)

165-Bump BGA Commercial Temp Industrial Temp GS8342D06/11/20/38BD-550/500/450/400/350 36Mb SigmaQuad-II+TM Burst of 4 SRAM 550 MHz–350 MHz 1.8 V VDD 1.8 V or 1.5 V I/O Features • 2.5 Clock Latency • 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 4 Read and Write • On-Die Termination (ODT) on Data (D), Byte Write (BW), and Clock (K, K) intputs • 1.8 V +100/–100 mV c.

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165-Bump BGA Commercial Temp Industrial Temp GS8342D06/11/20/38BD-550/500/450/400/350 36Mb SigmaQuad-II+TM Burst of 4 SRAM 550 MHz–350 MHz 1.8 V VDD 1.8 V or 1.5 V I/O Features • 2.5 Clock Latency • 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 4 Read and Write • On-Die Termination (ODT) on Data (D), Byte Write (BW), and Clock (K, K) intputs • 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 • Data Valid Pin (QVLD) Support • IEEE 1149.1 JTAG-compliant Boundary Scan • 165-bump, 13 mm x 15 mm, 1 mm bump pitch BGA package • RoHS-compliant 165-bump BGA package available SigmaQuad-II™ Family Overview The GS8342D06/11/20/38BD are built in compliance with the SigmaQuad-II+ SRAM pinout standard for Separate I/O synchronous SRAMs. They are 37,748,736-bit (36Mb) SRAMs. The GS8342D06/11/20/38BD 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 GS8342D06/11/20/38BD 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. Each internal read and write operation in a SigmaQuad-II+ B4 RAM is four times wider than the device I/O bus. An input data bus de-multiplexer is used to accumulate incoming data before it is simultaneously written to the memory array. An output data multiplexer is used to capture the data produced from a single memory array read and then route it to the appropriate output drivers as needed. Therefore the address field of a SigmaQuad-II+ B4 RAM is always two address pins less than the advertised index depth (e.g., the 4M x 8 has a 1M addressable index). tKHKH tKHQV -550 1.81 ns 0.45 ns Parameter Synopsis -500 2.0 ns 0.45 ns -450 2.2 ns 0.45 ns -400 2.5 ns 0.45 ns -350 2.86 ns 0.45 ns Rev: 1.02a 11/2012 1/30 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D06/11/20/38BD-550/500/450/400/350 1M x 36 SigmaQuad-II+ SRAM—Top View 1 2 3 4 5 6 7 8 9 10 11 A CQ NC/SA NC/SA (288Mb) (72Mb) W BW2 K BW1 R SA NC/SA (144Mb) CQ B Q27 Q18 D18 SA BW3 K BW0 SA D17 Q17 Q8 C D27 Q28 D19 VSS SA NC SA VSS D16 Q7 D8 D D28 D20 Q19 VSS VSS VSS VSS VSS Q16 D15 D7 E Q29 D29 Q20 VDDQ VSS VSS VSS VDDQ Q15 D6 Q6 F Q30 Q21 D21 VDDQ VDD VSS VDD VDDQ D14 Q14 Q5 G D30 D22 Q22 VDDQ VDD VSS VDD VDDQ Q13 D13 D5 H Doff VREF VDDQ VDDQ VDD VSS VDD VDDQ VDDQ VREF ZQ J D31 Q31 D23 VDDQ VDD VSS VDD VDDQ D12 Q4 D4 K Q32 D32 Q23 VDDQ VDD VSS VDD VDDQ Q12 D3 Q3 L Q33 Q24 D24 VDDQ VSS VSS VSS VDDQ D11 Q11 Q2 M D33 Q34 D25 VSS VSS VSS VSS VSS D10 Q1 D2 N D34 D26 Q25 VSS SA SA SA VSS Q10 D9 D1 P Q35 D35 Q26 SA SA QVLD SA SA Q9 D0 Q0 R TDO TCK SA SA SA ODT SA SA SA TMS TDI 11 x 15 Bump BGA—13 x 15 mm Body—1 mm Bump Pitch Notes: 1. BW0 controls writes to D0:D8; BW1 controls writes to D9:D17; BW2 controls writes to D18:D26; BW3 controls writes to D27:D35 2. Pins A2, A3, and A10 are the expansion addresses. Rev: 1.02a 11/2012 2/30 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D06/11/20/38BD-550/500/450/400/350 2M x 18 SigmaQuad-II+ SRAM—Top View 123456789 A CQ NC/SA (144Mb) SA W BW1 K NC/SA (288Mb) R SA B NC Q9 D9 SA NC K BW0 SA NC C NC NC D10 VSS SA NC SA VSS NC D NC D11 Q10 VSS VSS VSS VSS VSS NC E NC NC Q11 VDDQ VSS VSS VSS VDDQ NC F NC Q12 D12 VDDQ VDD VSS VDD VDDQ NC G NC D13 Q13 VDDQ VDD VSS VDD VDDQ NC H Doff VREF VDDQ VDDQ VDD VSS VDD VDDQ VDDQ J NC NC D14 VDDQ VDD VSS VDD VDDQ NC K NC NC Q14 VDDQ VDD VSS VDD VDDQ NC L NC Q15 D15 VDDQ VSS VSS VSS VDDQ NC M NC NC D16 VSS VSS VSS VSS VSS NC N NC D17 Q16 VSS SA SA SA VSS NC P NC NC Q17 SA SA QVLD SA SA NC R TDO TCK SA SA SA ODT SA SA SA 11 x 15 Bump BGA—13 x 15 mm Body—1 mm Bump Pitch Notes: 1. BW0 controls writes to D0:D8. BW1 controls writes to D9:D17. 2. Pins A2, A7, and A10 are the expansion addresses. 10 NC/SA (72Mb) NC Q7 NC D6 NC NC VREF Q4 D3 NC Q1 NC D0 TMS 11 CQ Q8 D8 D7 Q6 Q5 D5 ZQ D4 Q3 Q2 D2 D1 Q0 TDI Rev: 1.02a 11/2012 3/30 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D06/11/20/38BD-550/500/450/400/350 4M x 9 SigmaQuad-II SRAM—Top View 123456789 A CQ NC/SA (72Mb) SA W NC K NC/SA (144.


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