GS8342D08/09/18/36AE-300M 165-Bump BGA Military Temp 36Mb SigmaQuad-II Burst of 4 SRAM 300 MHz 1.8 V VDD 1.8 V and 1.5 V I/O Features Clocking and Addressing Schemes • Military Temperature Range • Simultaneous Read and Write SigmaQuad™ Interface • JEDEC-standard pinout and package • Dual Double Data Rate interface • Byte Write (x36, x18, and x9) and Nybble Write (x8) function • Burst of 4 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 • 165-bump, 15 mm x 17 mm, 1 mm bump pitch BGA package • Pin-compatible with 18Mb, 72Mb and 144Mb devices The GS8342D08/09/18/36AE-300M 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 quasi independently with the C and C clock inputs. C and C are also independent singleended clock inputs, not differential inputs. If the C clocks are tied high, the K clocks are routed internally to fire the output registers instead. SigmaQuad™ Family Overview The GS8342D08/09/18/36AE-300M 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 GS8342D08/09/18/36AE-300M 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. 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 a1M addressable index). Parameter Synopsis -300M Rev: 1.00a 11/2011 tKHKH 3.3 ns tKHQV 0.45 ns 1/36 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D08/09/18/36AE-300M 1M x 36 SigmaQuad-II SRAM—Top View 1 2 3 4 5 6 7 8 9 10 11 A CQ NC NC W BW2 K BW1 R SA NC 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 C SA SA Q9 D0 Q0 R TDO TCK SA SA SA C SA SA SA TMS TDI 11 x 15 Bump BGA—15 x 17 mm2 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. A2, A3, and A10 are reserved for future use as an address pin for higher density devices. They are not connected to the die on this device. They may be left floating or be treated as an MCL pin (Must Connect Low) to assure the site will successfully accomodate a future, higher density device. These pins may be marked as VSS, NC, or MCL by some vendors of compatible SRAMs. Expansion Addresses Rev: 1.00a 11/2011 A3 72Mb A10 144Mb A2 288Mb 2/36 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D08/09/18/36AE-300M 2M x 18 SigmaQuad-II SRAM—Top View 1 2 3 4 5 6 7 8 9 10 11 A CQ NC SA W BW1 K NC R SA NC CQ B NC Q9 D9 SA NC K BW0 SA NC NC Q8 C NC NC D10 VSS SA NC SA VSS NC Q7 D8 D NC D11 Q10 VSS VSS VSS VSS VSS NC NC D7 E NC NC Q11 VDDQ VSS VSS VSS VDDQ NC D6 Q6 F NC Q12 D12 VDDQ VDD VSS VDD VDDQ NC NC Q5 G NC D13 Q13 VDDQ VDD VSS VDD VDDQ NC NC D5 H Doff VREF VDDQ VDDQ VDD VSS VDD VDDQ VDDQ VREF ZQ J NC NC D14 VDDQ VDD VSS VDD VDDQ NC Q4 D4 K NC NC Q14 VDDQ VDD VSS VDD VDDQ NC D3 Q3 L NC Q15 D15 VDDQ VSS VSS VSS VDDQ NC NC Q2 M NC NC D16 VSS VSS VSS VSS VSS NC Q1 D2 N NC D17 Q16 VSS SA SA SA VSS NC NC D1 P NC NC Q17 SA SA C SA SA NC D0 Q0 R TDO TCK SA SA SA C SA SA SA TMS TDI 11 x 15 Bump BGA—15 x 17 mm2 Body—1 mm Bump Pitch Notes: 1. BW0 controls writes to D0:D8. BW1 controls writes to D9:D17. 2. A2, A7, and A10 are reserved for future use as an address pin for higher density devices. They are not connected to the die on this device. They may be left floating or be treated as an MCL pin (Must Connect Low) to assure the site will successfully accomodate a future, higher density device. These pins may be marked as VSS, NC, or MCL by some vendors of compatible SRAMs. Expansion Addresses Rev: 1.00a 11/2011 A10 72Mb A2 144Mb A7 288Mb 3/36 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D08/09/18/36AE-300M 4M x 9 SigmaQuad-II SRAM—Top View 1 2 3 4 5 6 7 8 9 10 11 A CQ NC SA W NC K NC R SA SA CQ B NC NC NC SA NC K BW0 SA NC NC Q4 C NC NC NC VSS SA NC SA VSS NC NC D4 D NC D5 NC VSS VSS VSS VSS VSS NC NC NC E NC NC Q5 VDDQ VSS VSS VSS VDDQ NC D3 Q3 F NC NC NC VDDQ VDD VSS VDD VDDQ NC NC NC G NC D6 Q6 VDDQ VDD VSS VDD VDDQ NC NC NC H Doff VREF VDDQ VDDQ VDD VSS VDD VDDQ VDDQ VREF ZQ J NC NC NC VDDQ VDD VSS VDD VDDQ NC Q2 D2 K NC NC NC VDDQ VDD VSS VDD VDDQ NC NC NC L NC Q7 D7 VDDQ VSS VSS VSS VDDQ NC NC Q1 M NC NC NC VSS VSS VSS VSS VSS NC NC D1 N NC D8 NC VSS SA SA SA VSS NC NC NC P NC NC Q8 SA SA C SA SA NC D0 Q0 R TDO TCK SA SA SA C SA SA SA TMS TDI 11 x 15 Bump BGA—15 x 17 mm2 Body—1 mm Bump Pitch Notes: 1. BW0 controls writes to D0:D8. 2. A2, A7, and B5 are reserved for future use as an address pin for higher density devices. They are not connected to the die on this device. They may be left floating or be treated as an MCL pin (Must Connect Low) to assure the site will successfully accomodate a future, higher density device. These pins may be marked as VSS, NC, or MCL by some vendors of compatible SRAMs. Expansion Address Rev: 1.00a 11/2011 A2 72Mb A7 144Mb B5 288Mb 4/36 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D08/09/18/36AE-300M 4M x 8 SigmaQuad-II SRAM—Top View 1 2 3 4 5 6 7 8 9 10 11 A CQ NC SA W NW1 K NC R SA SA CQ B NC NC NC SA NC K NW0 SA NC NC Q3 C NC NC NC VSS SA NC SA VSS NC NC D3 D NC D4 NC VSS VSS VSS VSS VSS NC NC NC E NC NC Q4 VDDQ VSS VSS VSS VDDQ NC D2 Q2 F NC NC NC VDDQ VDD VSS VDD VDDQ NC NC NC G NC D5 Q5 VDDQ VDD VSS VDD VDDQ NC NC NC H Doff VREF VDDQ VDDQ VDD VSS VDD VDDQ VDDQ VREF ZQ J NC NC NC VDDQ VDD VSS VDD VDDQ NC Q1 D1 K NC NC NC VDDQ VDD VSS VDD VDDQ NC NC NC L NC Q6 D6 VDDQ VSS VSS VSS VDDQ NC NC Q0 M NC NC NC VSS VSS VSS VSS VSS NC NC D0 N NC D7 NC VSS SA SA SA VSS NC NC NC P NC NC Q7 SA SA C SA SA NC NC NC R TDO TCK SA SA SA C SA SA SA TMS TDI 11 x 15 Bump BGA—15 x 17 mm2 Body—1 mm Bump Pitch Notes: 1. NW0 controls writes to D0:D3. NW1 controls writes to D4:D7. 2. A2, A7, and B5 are reserved for future use as an address pin for higher density devices. They are not connected to the die on this device. They may be left floating or be treated as an MCL pin (Must Connect Low) to assure the site will successfully accomodate a future, higher density device. These pins may be marked as VSS, NC, or MCL by some vendors of compatible SRAMs. Expansion Address Rev: 1.00a 11/2011 A2 72Mb A7 144Mb B5 288Mb 5/36 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D08/09/18/36AE-300M 4M x 9 SigmaQuad-II SRAM — Top View 1 2 3 4 5 6 7 8 9 10 11 A CQ NC SA W NC K NC R SA SA CQ B NC NC NC SA NC K BW SA NC NC Q4 C NC NC NC VSS SA SA VSS NC NC D4 D NC D5 NC VSS VSS VSS VSS VSS NC NC NC E NC NC Q5 VDDQ VSS VSS VSS VDDQ NC D3 Q3 F NC NC NC VDDQ VDD VSS VDD VDDQ NC NC NC G NC D6 Q6 VDDQ VDD VSS VDD VDDQ NC NC NC H Doff VREF VDDQ VDDQ VDD VSS VDD VDDQ VDDQ VREF ZQ J NC NC NC VDDQ VDD VSS VDD VDDQ NC Q2 D2 K NC NC NC VDDQ VDD VSS VDD VDDQ NC NC NC L NC Q7 D7 VDDQ VSS VSS VSS VDDQ NC NC Q1 M NC NC NC VSS VSS VSS VSS VSS NC NC D1 N NC D8 NC VSS SA SA SA VSS NC NC NC P NC NC Q8 SA SA C SA SA NC D0 Q0 R TDO TCK SA SA SA C SA SA SA TMS TDI 11 x 15 Bump BGA—15 x 17 mm2 Body—1 mm Bump Pitch Note: A2, A7, and B5 are reserved for future use PQ an address pin for higher density devices. They are not connected to the die on this device. They may be left floating or be treated PQ an MCL pin (Must Connect Low) to PQsure the site will successfully accomodate a future, higher density device. These pins may be marked PQ, VSS, NC, or MCL by some vendors of compatible SRAMs. Expansion Address Rev: 1.00a 11/2011 A2 72Mb A7 144Mb B5 288Mb 6/36 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D08/09/18/36AE-300M Pin Description Table Symbol Description Type Comments SA Synchronous Address Inputs Input — R Synchronous Read Input Active Low W Synchronous Write Input Active Low BW0–BW3 Synchronous Byte Writes Input Active Low x18/x36 only NW0–NW1 Nybble Write Control Pin Input Active Low x8 only K Input Clock Input Active High K Input Clock Input Active Low C Output Clock Input Active High C Output Clock Input Active Low TMS Test Mode Select Input — TDI Test Data Input Input — TCK Test Clock Input Input — TDO Test Data Output Output — VREF HSTL Input Reference Voltage Input — ZQ Output Impedance Matching Input Input — Qn Synchronous Data Outputs Output — Dn Synchronous Data Inputs Input — Doff Disable DLL when low Input Active Low CQ Output Echo Clock Output — CQ Output Echo Clock Output — VDD Power Supply Supply 1.8 V Nominal VDDQ Isolated Output Buffer Supply Supply 1.5 or 1.8 V Nominal VSS Power Supply: Ground Supply — NC No Connect — — Notes: 1. NC = Not Connected to die or any other pin 2. C, C, K, or K cannot be set to VREF voltage. Rev: 1.00a 11/2011 7/36 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D08/09/18/36AE-300M Background Separate I/O SRAMs, from a system architecture point of view, are attractive in applications where alternating reads and writes are needed. Therefore, the SigmaQuad-II SRAM interface and truth table are optimized for alternating reads and writes. Separate I/O SRAMs are unpopular in applications where multiple reads or multiple writes are needed because burst read or write transfers from Separate I/O SRAMs can cut the RAM’s bandwidth in half. SigmaQuad-II B4 SRAM DDR Read The status of the Address Input, W, and R pins are sampled by the rising edges of K. W and R high causes chip disable. A low on the Read Enable-bar pin, R, begins a read cycle. R is always ignored if the previous command loaded was a read command. Data can be clocked out after the next rising edge of K with a rising edge of C (or by K if C and C are tied high), after the following rising edge of K with a rising edge of C (or by K if C and C are tied high), after the next rising edge of K with a rising edge of C, and after the following rising edge of K with a rising edge of C. Clocking in a high on the Read Enable-bar pin, R, begins a read port deselect cycle. SigmaQuad-II B4 Double Data Rate SRAM Read First Read A NOP Read B Write C Read D Write E NOP K K Address A B C D E R W BWx C C+1 C+2 C+3 E E+1 D C C+1 C+2 C+3 E E+1 C C Q A A+1 A+2 A+3 B B+1 B+2 B+3 D D+1 D+2 CQ CQ Rev: 1.00a 11/2011 8/36 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D08/09/18/36AE-300M SigmaQuad-II B4 SRAM DDR Write The status of the Address Input, W, and R pins are sampled by the rising edges of K. W and R high causes chip disable. A low on the Write Enable-bar pin, W, and a high on the Read Enable-bar pin, R, begins a write cycle. W is always ignored if the previous command was a write command. Data is clocked in by the next rising edge of K, the rising edge of K after that, the next rising edge of K, and finally by the next rising edge of K. and by the rising edge of the K that follows. SigmaQuad-II B4 Double Data Rate SRAM Write First Write A NOP Read B Write C Read D Write E NOP K K Address A B C D E R W BWx A A+1 A+2 A+3 C C+1 C+2 C+3 E E+1 E+ D A A+1 A+2 A+3 C C+1 C+2 C+3 E E+1 E+ C C B Q B+1 B+2 B+3 D D+1 D+2 CQ CQ Rev: 1.00a 11/2011 9/36 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D08/09/18/36AE-300M Power-Up Sequence for SigmaQuad-II SRAMs SigmaQuad-II SRAMs must be powered-up in a specific sequence in order to avoid undefined operations. Power-Up Sequence 1. Power-up and maintain Doff at low state. 1a. Apply VDD. 1b. Apply VDDQ. 1c. Apply VREF (may also be applied at the same time as VDDQ). 1. After power is achieved and clocks (K, K, C, C) are stablized, change Doff to high. 1. An additional 1024 clock cycles are required to lock the DLL after it has been enabled. Note: The DLL may be reset by driving the Doff pin low or by stopping the K clocks for at least 30 ns. 1024 cycles of clean K clocks are always required to relock the DLL after reset. DLL Constraints • The DLL synchronizes to either K or C clock. These clocks should have low phase jitter (tKCVar ). • The DLL cannot operate at a frequency lower than that specified by the tKHKH maximum specification for the desired operating clock frequency. • If the incoming clock is not stablized when DLL is enabled, the DLL may lock on the wrong frequency and cause undefined errors or failures during the initial stage. Special Functions Byte Write and Nybble Write Control Byte Write Enable pins are sampled at the same time that Data In is sampled. A high on the Byte Write Enable pin associated with a particular byte (e.g., BW0 controls D0–D8 inputs) will inhibit the storage of that particular byte, leaving whatever data may be stored at the current address at that byte location undisturbed. Any or all of the Byte Write Enable pins may be driven high or low during the data in sample times in a write sequence. Each write enable command and write address loaded into the RAM provides the base address for a 4 beat data transfer. The x18 version of the RAM, for example, may write 72 bits in association with each address loaded. Any 9-bit byte may be masked in any write sequence. Nybble Write (4-bit) control is implemented on the 8-bit-wide version of the device. For the x8 version of the device, “Nybble Write Enable” and “NBx” may be substituted in all the discussion above. Rev: 1.00a 11/2011 10/36 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D08/09/18/36AE-300M Example x18 RAM Write Sequence using Byte Write Enables Data In Sample Time BW0 BW1 D0–D8 D9–D17 Beat 1 0 1 Data In Don’t Care Beat 2 1 0 Don’t Care Data In Beat 3 0 0 Data In Data In Beat 4 1 0 Don’t Care Data In Resulting Write Operation Byte 1 D0–D8 Byte 2 D9–D17 Byte 1 D0–D8 Byte 2 D9–D17 Byte 1 D0–D8 Byte 2 D9–D17 Byte 1 D0–D8 Byte 2 D9–D17 Written Unchanged Unchanged Written Written Written Unchanged Written Beat 1 Beat 2 Beat 3 Beat 4 Output Register Control SigmaQuad-II SRAMs offer two mechanisms for controlling the output data registers. Typically, control is handled by the Output Register Clock inputs, C and C. The Output Register Clock inputs can be used to make small phase adjustments in the firing of the output registers by allowing the user to delay driving data out as much as a few nanoseconds beyond the next rising edges of the K and K clocks. If the C and C clock inputs are tied high, the RAM reverts to K and K control of the outputs, allowing the RAM to function as a conventional pipelined read SRAM. Rev: 1.00a 11/2011 11/36 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D08/09/18/36AE-300M Example Four Bank Depth Expansion Schematic R3 W3 R2 W2 R1 W1 R0 W0 A0–An K D1–Dn Bank 0 Bank 1 Bank 2 Bank 3 A A A A W W W W R R R R K D CQ Q C K D CQ Q C K D CQ K CQ Q D Q C C C Q1–Qn CQ0 CQ1 CQ2 CQ3 Note: For simplicity BWn, NWn, K, and C are not shown. Rev: 1.00a 11/2011 12/36 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology Rev: 1.00a 11/2011 A A+1 A+2 B+2 D A+3 B+3 C E B+1 B D(2) Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. 13/36 CQ[2] CQ[2] Q(2) C[2] C[2] CQ[1] CQ(1) Q(1) C[1] C[1] B+1 B BWx(2) B+2 B+3 D C Write D D(1) B Read C D A Write B BWx(1) W(2) W(1) R(2) R(1) Address K K Read A C+1 Read E D+1 D+1 Burst of 4 SigmaQuad-II SRAM Depth Expansion C+2 D+2 D+2 F Write F C+3 D+3 D+3 E F F NOP E+1 F+1 F+1 E+2 F F GS8342D08/09/18/36AE-300M © 2011, GSI Technology GS8342D08/09/18/36AE-300M FLXDrive-II Output Driver Impedance Control HSTL I/O SigmaQuad-II SRAMs are supplied with programmable impedance output drivers. The ZQ pin must be connected to VSS via an external resistor, RQ, to allow the SRAM to monitor and adjust its output driver impedance. The value of RQ must be 5X the value of the desired RAM output impedance. The allowable range of RQ to guarantee impedance matching continuously is between 175Ω and 350Ω. Periodic readjustment of the output driver impedance is necessary as the impedance is affected by drifts in supply voltage and temperature. The SRAM’s output impedance circuitry compensates for drifts in supply voltage and temperature. A clock cycle counter periodically triggers an impedance evaluation, resets and counts again. Each impedance evaluation may move the output driver impedance level one step at a time towards the optimum level. The output driver is implemented with discrete binary weighted impedance steps. Separate I/O SigmaQuad-II B4 SRAM Truth Table Previous Operation A R W Current Operation D D D D Q Q Q Q K↑ (tn-1) K ↑ (tn) K ↑ (tn) K ↑ (tn) K↑ (tn) K↑ (tn+1) K↑ (tn+1½) K↑ (tn+2) K↑ (tn+2½) K↑ (tn+1) K↑ (tn+1½) K↑ (tn+2) K↑ (tn+2½) Deselect X 1 1 Deselect X X — — Hi-Z Hi-Z — — Write X 1 X Deselect D2 D3 — — Hi-Z Hi-Z — — Read X X 1 Deselect X X — — Q2 Q3 — — Deselect V 1 0 Write D0 D1 D2 D3 Hi-Z Hi-Z — — Deselect V 0 X Read X X — — Q0 Q1 Q2 Q3 Read V X 0 Write D0 D1 D2 D3 Q2 Q3 — — Write V 0 X Read D2 D3 — — Q0 Q1 Q2 Q3 Notes: 1. “1” = input “high”; “0” = input “low”; “V” = input “valid”; “X” = input “don’t care” 2. “—” indicates that the input requirement or output state is determined by the next operation. 3. Q0, Q1, Q2, and Q3 indicate the first, second, third, and fourth pieces of output data transferred during Read operations. 4. D0, D1, D2, and D3 indicate the first, second, third, and fourth pieces of input data transferred during Write operations. 5. Qs are tristated for one cycle in response to Deselect and Write commands, one cycle after the command is sampled, except when preceded by a Read command. 6. Users should not clock in metastable addresses. Rev: 1.00a 11/2011 14/36 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D08/09/18/36AE-300M Byte Write Clock Truth Table BW BW BW BW Current Operation D D D D K↑ (tn+1) K↑ (tn+1½) K↑ (tn+2) K↑ (tn+2½) K↑ (tn) K↑ (tn+1) K↑ (tn+1½) K↑ (tn+2) K↑ (tn+2½) T T T T Write Dx stored if BWn = 0 in all four data transfers D0 D2 D3 D4 T F F F Write Dx stored if BWn = 0 in 1st data transfer only D0 X X X F T F F Write Dx stored if BWn = 0 in 2nd data transfer only X D1 X X F F T F Write Dx stored if BWn = 0 in 3rd data transfer only X X D2 X F F F T Write Dx stored if BWn = 0 in 4th data transfer only X X X D3 F F F F Write Abort No Dx stored in any of the four data transfers X X X X Notes: 1. “1” = input “high”; “0” = input “low”; “X” = input “don’t care”; “T” = input “true”; “F” = input “false”. 2. If one or more BWn = 0, then BW = “T”, else BW = “F”. Rev: 1.00a 11/2011 15/36 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D08/09/18/36AE-300M x36 Byte Write Enable (BWn) Truth Table BW0 BW1 BW2 BW3 D0–D8 D9–D17 D18–D26 D27–D35 1 1 1 1 Don’t Care Don’t Care Don’t Care Don’t Care 0 1 1 1 Data In Don’t Care Don’t Care Don’t Care 1 0 1 1 Don’t Care Data In Don’t Care Don’t Care 0 0 1 1 Data In Data In Don’t Care Don’t Care 1 1 0 1 Don’t Care Don’t Care Data In Don’t Care 0 1 0 1 Data In Don’t Care Data In Don’t Care 1 0 0 1 Don’t Care Data In Data In Don’t Care 0 0 0 1 Data In Data In Data In Don’t Care 1 1 1 0 Don’t Care Don’t Care Don’t Care Data In 0 1 1 0 Data In Don’t Care Don’t Care Data In 1 0 1 0 Don’t Care Data In Don’t Care Data In 0 0 1 0 Data In Data In Don’t Care Data In 1 1 0 0 Don’t Care Don’t Care Data In Data In 0 1 0 0 Data In Don’t Care Data In Data In 1 0 0 0 Don’t Care Data In Data In Data In 0 0 0 0 Data In Data In Data In Data In x18 Byte Write Enable (BWn) Truth Table BW0 BW1 D0–D8 D9–D17 1 1 Don’t Care Don’t Care 0 1 Data In Don’t Care 1 0 Don’t Care Data In 0 0 Data In Data In x09 Byte Write Enable (BWn) Truth Table BW0 D0–D8 1 Don’t Care 0 Data In 1 Don’t Care 0 Data In Rev: 1.00a 11/2011 16/36 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D08/09/18/36AE-300M Nybble Write Clock Truth Table NW NW NW NW Current Operation D D D D K↑ (tn+1) K↑ (tn+1½) K↑ (tn+2) K↑ (tn+2½) K↑ (tn) K↑ (tn+1) K↑ (tn+1½) K↑ (tn+2) K↑ (tn+2½) T T T T Write Dx stored if NWn = 0 in all four data transfers D0 D2 D3 D4 T F F F Write Dx stored if NWn = 0 in 1st data transfer only D0 X X X F T F F Write Dx stored if NWn = 0 in 2nd data transfer only X D1 X X F F T F Write Dx stored if NWn = 0 in 3rd data transfer only X X D2 X F F F T Write Dx stored if NWn = 0 in 4th data transfer only X X X D3 F F F F Write Abort No Dx stored in any of the four data transfers X X X X Notes: 1. “1” = input “high”; “0” = input “low”; “X” = input “don’t care”; “T” = input “true”; “F” = input “false”. 2. If one or more NWn = 0, then NW = “T”, else NW = “F”. x8 Nybble Write Enable (NWn) Truth Table NW0 NW1 D0–D3 D4–D7 1 1 Don’t Care Don’t Care 0 1 Data In Don’t Care 1 0 Don’t Care Data In 0 0 Data In Data In Rev: 1.00a 11/2011 17/36 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D08/09/18/36AE-300M Absolute Maximum Ratings (All voltages reference to VSS) Symbol Description Value Unit VDD Voltage on VDD Pins –0.5 to 2.9 V VDDQ Voltage in VDDQ Pins –0.5 to VDD V VREF Voltage in VREF Pins –0.5 to VDDQ V VI/O Voltage on I/O Pins –0.5 to VDDQ +0.5 (≤ 2.9 V max.) V VIN Voltage on Other Input Pins –0.5 to VDDQ +0.5 (≤ 2.9 V max.) V IIN Input Current on Any Pin +/–100 mA dc IOUT Output Current on Any I/O Pin +/–100 mA dc TJ Maximum Junction Temperature 125 oC TSTG Storage Temperature –55 to 125 oC Note: Permanent damage to the device may occur if the Absolute Maximum Ratings are exceeded. Operation should be restricted to Recommended Operating Conditions. Exposure to conditions exceeding the Recommended Operating Conditions, for an extended period of time, may affect reliability of this component. Recommended Operating Conditions Power Supplies Parameter Symbol Min. Typ. Max. Unit Supply Voltage VDD 1.7 1.8 1.9 V I/O Supply Voltage VDDQ 1.4 — VDD V Reference Voltage VREF 0.68 — 0.95 V Notes: 1. The power supplies need to be powered up simultaneously or in the following sequence: VDD, VDDQ, VREF, followed by signal inputs. The power down sequence must be the reverse. VDDQ must not exceed VDD. 2. Most speed grades and configurations of this device are offered in both Commercial and Industrial Temperature ranges. The part number of Industrial Temperature Range versions end the character “I”. Unless otherwise noted, all performance specifications quoted are evaluated for worst case in the temperature range marked on the device. Operating Temperature Parameter Symbol Min. Typ. Max. Unit Junction Temperature (Military Range Versions) TJ –55 25 125 °C Note: The part numbers of Military Temperature Range versions end with the character “M”. Unless otherwise noted, all performance specifications quoted are evaluated for worst case in the temperature range marked on the device. Rev: 1.00a 11/2011 18/36 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D08/09/18/36AE-300M Thermal Impedance Package Test PCB Substrate θ JA (C°/W) Airflow = 0 m/s θ JA (C°/W) Airflow = 1 m/s θ JA (C°/W) Airflow = 2 m/s θ JB (C°/W) θ JC (C°/W) 165 BGA 4-layer 17.1 14.3 13.1 6.6 2.1 Notes: 1. Thermal Impedance data is based on a number of of samples from mulitple lots and should be viewed as a typical number. 2. Please refer to JEDEC standard JESD51-6. 3. The characteristics of the test fixture PCB influence reported thermal characteristics of the device. Be advised that a good thermal path to the PCB can result in cooling or heating of the RAM depending on PCB temperature. HSTL I/O DC Input Characteristics Parameter Symbol Min Max Units Notes DC Input Logic High VIH (dc) VREF + 0.1 VDDQ + 0.3 V 1 DC Input Logic Low VIL (dc) –0.3 VREF – 0.1 V 1 Notes: 1. Compatible with both 1.8 V and 1.5 V I/O drivers. 2. These are DC test criteria. DC design criteria is VREF ± 50 mV. The AC VIH/VIL levels are defined separately for measuring timing parameters. 3. VIL (Min)DC = –0.3 V, VIL(Min)AC = –1.5 V (pulse width ≤ 3 ns). 4. VIH (Max)DC = VDDQ + 0.3 V, VIH(Max)AC = VDDQ + 0.85 V (pulse width ≤ 3 ns). HSTL I/O AC Input Characteristics Parameter Symbol Min Max Units Notes AC Input Logic High VIH (ac) VREF + 200 — mV 2,3 AC Input Logic Low VIL (ac) — VREF – 200 mV 2,3 VREF (ac) — 5% VREF (DC) mV 1 VREF Peak-to-Peak AC Voltage Notes: 1. The peak-to-peak AC component superimposed on VREF may not exceed 5% of the DC component of VREF. 2. To guarantee AC characteristics, VIH,VIL, Trise, and Tfall of inputs and clocks must be within 10% of each other. 3. For devices supplied with HSTL I/O input buffers. Compatible with both 1.8 V and 1.5 V I/O drivers. Rev: 1.00a 11/2011 19/36 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D08/09/18/36AE-300M Undershoot Measurement and Timing Overshoot Measurement and Timing VIH 20% tKHKH VDD + 1.0 V VSS 50% 50% VDD VSS – 1.0 V 20% tKHKH VIL Note: Input Undershoot/Overshoot voltage must be –2 V > Vi < VDDn+2 V not to exceed 4.6 V maximum, with a pulse width not to exceed 20% tKC. Capacitance (TA = 25oC, f = 1 MHZ, VDD = 1.8 V) Parameter Symbol Test conditions Typ. Max. Unit Input Capacitance CIN VIN = 0 V 4 5 pF Output Capacitance COUT VOUT = 0 V 6 7 pF Clock Capacitance CCLK VIN = 0 V 5 6 pF Note: This parameter is sample tested. AC Test Conditions Parameter Conditions Input high level 1.25 V Input low level 0.25 V Max. input slew rate 2 V/ns Input reference level 0.75 V Output reference level VDDQ/2 Note: Test conditions as specified with output loading as shown unless otherwise noted. AC Test Load Diagram DQ 50Ω RQ = 250 Ω (HSTL I/O) VREF = 0.75 V VT = VDDQ/2 Rev: 1.00a 11/2011 20/36 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D08/09/18/36AE-300M Input and Output Leakage Characteristics Parameter Symbol Test Conditions Min. Max Input Leakage Current (except mode pins) IIL VIN = 0 to VDDQ –2 uA 2 uA Doff IILDOFF VIN = 0 to VDDQ –20 uA 2 uA Output Leakage Current IOL Output Disable, VOUT = 0 to VDDQ –2 uA 2 uA Programmable Impedance HSTL Output Driver DC Electrical Characteristics Parameter Symbol Min. Max. Units Notes Output High Voltage VOH1 VDDQ/2 – 0.12 VDDQ/2 + 0.12 V 1, 3 Output Low Voltage VOL1 VDDQ/2 – 0.12 VDDQ/2 + 0.12 V 2, 3 Output High Voltage VOH2 VDDQ – 0.2 VDDQ V 4, 5 Output Low Voltage VOL2 Vss 0.2 V 4, 6 Notes: 1. IOH = (VDDQ/2) / (RQ/5) +/– 15% @ VOH = VDDQ/2 (for: 175Ω ≤ RQ ≤ 350Ω). 2. IOL = (VDDQ/2) / (RQ/5) +/– 15% @ VOL = VDDQ/2 (for: 175Ω ≤ RQ ≤ 350Ω). 3. Parameter tested with RQ = 250Ω and VDDQ = 1.5 V or 1.8 V 4. 0Ω ≤ RQ ≤ ∞Ω 5. IOH = –1.0 mA 6. IOL = 1.0 mA Rev: 1.00a 11/2011 21/36 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D08/09/18/36AE-300M Operating Currents -300M Parameter Symbol Test Conditions Notes –55 to 125°C Operating Current (x36): DDR IDD VDD = Max, IOUT = 0 mA Cycle Time ≥ tKHKH Min 1015 mA 2, 3 Operating Current (x18): DDR IDD VDD = Max, IOUT = 0 mA Cycle Time ≥ tKHKH Min 940 mA 2, 3 Operating Current (x9): DDR IDD VDD = Max, IOUT = 0 mA Cycle Time ≥ tKHKH Min 915 mA 2, 3 Operating Current (x8): DDR IDD VDD = Max, IOUT = 0 mA Cycle Time ≥ tKHKH Min 915 mA 2, 3 Standby Current (NOP): DDR ISB1 340 mA 2, 4 Device deselected, IOUT = 0 mA, f = Max, All Inputs ≤ 0.2 V or ≥ VDD – 0.2 V Notes: 1. 2. 3. 4. Power measured with output pins floating. Minimum cycle, IOUT = 0 mA Operating current is calculated with 50% read cycles and 50% write cycles. Standby Current is only after all pending read and write burst operations are completed. Rev: 1.00a 11/2011 22/36 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D08/09/18/36AE-300M AC Electrical Characteristics Parameter Symbol -300M Min Max Units Notes Clock K, K Clock Cycle Time C, C Clock Cycle Time tKHKH tCHCH 3.3 5.0 ns tKC Variable tKCVar — 0.2 ns K, K Clock High Pulse Width C, C Clock High Pulse Width tKHKL tCHCL 1.32 — ns K, K Clock Low Pulse Width C, C Clock Low Pulse Width tKLKH tCLCH 1.32 — ns K to K High C to C High tKHKH tCHCH 1.49 — ns K to K High C to C High tKHKH tCHCH 1.49 — ns K, K Clock High to C, C Clock High tKHCH 0 0.8 ns DLL Lock Time tKCLock 1024 — cycle K Static to DLL reset tKCReset 30 — ns K, K Clock High to Data Output Valid C, C Clock High to Data Output Valid tKHQV tCHQV — 0.45 ns 4 K, K Clock High to Data Output Hold C, C Clock High to Data Output Hold tKHQX tCHQX –0.45 — ns 4 K, K Clock High to Echo Clock Valid C, C Clock High to Echo Clock Valid tKHCQV tCHCQV — 0.45 ns K, K Clock High to Echo Clock Hold C, C Clock High to Echo Clock Hold tKHCQX tCHCQX –0.45 — ns CQ, CQ High Output Valid tCQHQV — 0.27 ns 8 CQ, CQ High Output Hold tCQHQX –0.27 — ns 8 CQ Phase Distortion tCQHCQH tCQHCQH 1.24 — ns K Clock High to Data Output High-Z C Clock High to Data Output High-Z tKHQZ tCHQZ — 0.45 ns 4 K Clock High to Data Output Low-Z C Clock High to Data Output Low-Z tKHQX1 tCHQX1 –0.45 — ns 4 Address Input Setup Time tAVKH 0.4 — ns Control Input Setup Time (R, W) tIVKH 0.4 — ns 2 Control Input Setup Time (BWX, NWX) tIVKH 0.3 — ns 3 Data Input Setup Time tDVKH 0.3 — ns 6 7 Output Times Setup Times Rev: 1.00a 11/2011 23/36 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D08/09/18/36AE-300M AC Electrical Characteristics (Continued) Parameter Symbol -300M Min Max Units Notes Hold Times Address Input Hold Time tKHAX 0.4 — ns Control Input Hold Time (R, W) tKHIX 0.4 — ns 2 Control Input Hold Time (BWX, NWX) tKHIX 0.3 — ns 3 Data Input Hold Time tKHDX 0.3 — ns Notes: 1. All Address inputs must meet the specified setup and hold times for all latching clock edges. 2. Control singles are R, W. 3. Control singles are BW0, BW1, and (NW0, NW1 for x8) and (BW2, BW3 for x36). 4. If C, C are tied high, K, K become the references for C, C timing parameters 5. To avoid bus contention, at a given voltage and temperature tCHQX1 is bigger than tCHQZ. The specs as shown do not imply bus contention because tCHQX1 is a MIN parameter that is worst case at totally different test conditions (0°C, 1.9 V) than tCHQZ, which is a MAX parameter (worst case at 70°C, 1.7 V). It is not possible for two SRAMs on the same board to be at such different voltages and temperatures. 6. Clock phase jitter is the variance from clock rising edge to the next expected clock rising edge. 7. VDD slew rate must be less than 0.1 V DC per 50 ns for DLL lock retention. DLL lock time begins once VDD and input clock are stable. 8. Echo clock is very tightly controlled to data valid/data hold. By design, there is a ±0.1 ns variation from echo clock to data. The datasheet parameters reflect tester guard bands and test setup variations. Rev: 1.00a 11/2011 24/36 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D08/09/18/36AE-300M K and K Controlled Read-Write-Read Timing Diagram Read A Write B NOP Write C Read D Write E NOP KHKL KHKH KLKH K KHKHbar K AVKH Address A B C D E KHIX IVKH R KHIX IVKH W KHIX IVKH BWx B D B B+1 DVKH B+2 B+2 C+1 C+2 C+3 E E+1 B+3 C C+1 C+2 C+3 E E+1 KHQZ KHQV A C KHDX B+1 KHQX1 Q B+3 A+1 KHQX A+2 A+3 D D+1 D+2 KHCQX KHCQV CQHQX CQ KHCQX KHCQV CQHQV CQ Rev: 1.00a 11/2011 25/36 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D08/09/18/36AE-300M C and C Controlled Read-Write-Read Timing Diagram Read A NOP Read B Write C NOP Write D NOP KHKL KHKH KLKH K KHKHbar K AVKH KHAX A Address B C D IVKH KHIX R IVKH KHIX W IVKH BWx C D C KHIX C+1 C+2 KHDX C+1 C+3 D D+1 D C+3 D D+1 D DVKH C+2 C C CHQV CHQX1 A Q CHQX A+1 A+2 CHQZ A+3 B B+1 B+2 B+3 CHCQV CHCQX CQHQX CQ CHCQX CHCQX CQHQV CQ Rev: 1.00a 11/2011 26/36 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D08/09/18/36AE-300M JTAG Port Operation Overview The JTAG Port on this RAM operates in a manner that is compliant with IEEE Standard 1149.1-1990, a serial boundary scan interface standard (commonly referred to as JTAG). The JTAG Port input interface levels scale with VDD. The JTAG output drivers are powered by VDD. Disabling the JTAG Port It is possible to use this device without utilizing the JTAG port. The port is reset at power-up and will remain inactive unless clocked. TCK, TDI, and TMS are designed with internal pull-up circuits.To assure normal operation of the RAM with the JTAG Port unused, TCK, TDI, and TMS may be left floating or tied to either VDD or VSS. TDO should be left unconnected. JTAG Pin Descriptions Pin Pin Name I/O Description TCK Test Clock In Clocks all TAP events. All inputs are captured on the rising edge of TCK and all outputs propagate from the falling edge of TCK. TMS Test Mode Select In The TMS input is sampled on the rising edge of TCK. This is the command input for the TAP controller state machine. An undriven TMS input will produce the same result as a logic one input level. In The TDI input is sampled on the rising edge of TCK. This is the input side of the serial registers placed between TDI and TDO. The register placed between TDI and TDO is determined by the state of the TAP Controller state machine and the instruction that is currently loaded in the TAP Instruction Register (refer to the TAP Controller State Diagram). An undriven TDI pin will produce the same result as a logic one input level. TDI Test Data In TDO Test Data Out Output that is active depending on the state of the TAP state machine. Output changes in Out response to the falling edge of TCK. This is the output side of the serial registers placed between TDI and TDO. Note: This device does not have a TRST (TAP Reset) pin. TRST is optional in IEEE 1149.1. The Test-Logic-Reset state is entered while TMS is held high for five rising edges of TCK. The TAP Controller is also reset automaticly at power-up. JTAG Port Registers Overview The various JTAG registers, refered to as Test Access Port or TAP Registers, are selected (one at a time) via the sequences of 1s and 0s applied to TMS as TCK is strobed. Each of the TAP Registers is a serial shift register that captures serial input data on the rising edge of TCK and pushes serial data out on the next falling edge of TCK. When a register is selected, it is placed between the TDI and TDO pins. Instruction Register The Instruction Register holds the instructions that are executed by the TAP controller when it is moved into the Run, Test/Idle, or the various data register states. Instructions are 3 bits long. The Instruction Register can be loaded when it is placed between the TDI and TDO pins. The Instruction Register is automatically preloaded with the IDCODE instruction at power-up or whenever the controller is placed in Test-Logic-Reset state. Bypass Register The Bypass Register is a single bit register that can be placed between TDI and TDO. It allows serial test data to be passed through the RAM’s JTAG Port to another device in the scan chain with as little delay as possible. Rev: 1.00a 11/2011 27/36 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D08/09/18/36AE-300M Boundary Scan Register The Boundary Scan Register is a collection of flip flops that can be preset by the logic level found on the RAM’s input or I/O pins. The flip flops are then daisy chained together so the levels found can be shifted serially out of the JTAG Port’s TDO pin. The Boundary Scan Register also includes a number of place holder flip flops (always set to a logic 1). The relationship between the device pins and the bits in the Boundary Scan Register is described in the Scan Order Table following. The Boundary Scan Register, under the control of the TAP Controller, is loaded with the contents of the RAMs I/O ring when the controller is in Capture-DR state and then is placed between the TDI and TDO pins when the controller is moved to Shift-DR state. SAMPLE-Z, SAMPLE/PRELOAD and EXTEST instructions can be used to activate the Boundary Scan Register. JTAG TAP Block Diagram · · · · · · · · Boundary Scan Register · · 0 Bypass Register 0 108 1 · 2 1 0 Instruction Register TDI TDO ID Code Register 31 30 29 · · ·· 2 1 0 Control Signals TMS TCK Test Access Port (TAP) Controller Identification (ID) Register The ID Register is a 32-bit register that is loaded with a device and vendor specific 32-bit code when the controller is put in Capture-DR state with the IDCODE command loaded in the Instruction Register. The code is loaded from a 32-bit on-chip ROM. It describes various attributes of the RAM as indicated below. The register is then placed between the TDI and TDO pins when the controller is moved into Shift-DR state. Bit 0 in the register is the LSB and the first to reach TDO when shifting begins. Rev: 1.00a 11/2011 28/36 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D08/09/18/36AE-300M GSI Technology JEDEC Vendor ID Code Not Used Bit # Presence Register ID Register Contents 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 X 1 X X X X X X X X X X X X X X X X X X X 0 0 0 1 1 0 1 1 0 0 1 Tap Controller Instruction Set Overview There are two classes of instructions defined in the Standard 1149.1-1990; the standard (Public) instructions, and device specific (Private) instructions. Some Public instructions are mandatory for 1149.1 compliance. Optional Public instructions must be implemented in prescribed ways. The TAP on this device may be used to monitor all input and I/O pads, and can be used to load address, data or control signals into the RAM or to preload the I/O buffers. When the TAP controller is placed in Capture-IR state the two least significant bits of the instruction register are loaded with 01. When the controller is moved to the Shift-IR state the Instruction Register is placed between TDI and TDO. In this state the desired instruction is serially loaded through the TDI input (while the previous contents are shifted out at TDO). For all instructions, the TAP executes newly loaded instructions only when the controller is moved to Update-IR state. The TAP instruction set for this device is listed in the following table. Rev: 1.00a 11/2011 29/36 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D08/09/18/36AE-300M JTAG Tap Controller State Diagram 1 0 Test Logic Reset 0 Run Test Idle 1 Select DR 1 Select IR 0 0 1 1 Capture DR Capture IR 0 0 Shift DR 1 1 Shift IR 0 1 1 Exit1 DR 0 Exit1 IR 0 0 Pause DR 1 Exit2 DR 1 Update DR 1 1 0 0 Pause IR 1 Exit2 IR 0 1 0 0 Update IR 1 0 Instruction Descriptions BYPASS When the BYPASS instruction is loaded in the Instruction Register the Bypass Register is placed between TDI and TDO. This occurs when the TAP controller is moved to the Shift-DR state. This allows the board level scan path to be shortened to facilitate testing of other devices in the scan path. SAMPLE/PRELOAD SAMPLE/PRELOAD is a Standard 1149.1 mandatory public instruction. When the SAMPLE / PRELOAD instruction is loaded in the Instruction Register, moving the TAP controller into the Capture-DR state loads the data in the RAMs input and I/O buffers into the Boundary Scan Register. Boundary Scan Register locations are not associated with an input or I/O pin, and are loaded with the default state identified in the Boundary Scan Chain table at the end of this section of the datasheet. Because the RAM clock is independent from the TAP Clock (TCK) it is possible for the TAP to attempt to capture the I/O ring contents while the input buffers are in transition (i.e. in a metastable state). Although allowing the TAP to sample metastable inputs will not harm the device, repeatable results cannot be expected. RAM input signals must be stabilized for long enough to meet the TAPs input data capture set-up plus hold time (tTS plus tTH). The RAMs clock inputs need not be paused for any other TAP operation except capturing the I/O ring contents into the Boundary Scan Register. Moving the controller to Shift-DR state then places the boundary scan register between the TDI and TDO pins. EXTEST EXTEST is an IEEE 1149.1 mandatory public instruction. It is to be executed whenever the instruction register is loaded with all logic 0s. The EXTEST command does not block or override the RAM’s input pins; therefore, the RAM’s internal state is still determined by its input pins. Rev: 1.00a 11/2011 30/36 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D08/09/18/36AE-300M Typically, the Boundary Scan Register is loaded with the desired pattern of data with the SAMPLE/PRELOAD command. Then the EXTEST command is used to output the Boundary Scan Register’s contents, in parallel, on the RAM’s data output drivers on the falling edge of TCK when the controller is in the Update-IR state. Alternately, the Boundary Scan Register may be loaded in parallel using the EXTEST command. When the EXTEST instruction is selected, the sate of all the RAM’s input and I/O pins, as well as the default values at Scan Register locations not associated with a pin, are transferred in parallel into the Boundary Scan Register on the rising edge of TCK in the Capture-DR state, the RAM’s output pins drive out the value of the Boundary Scan Register location with which each output pin is associated. IDCODE The IDCODE instruction causes the ID ROM to be loaded into the ID register when the controller is in Capture-DR mode and places the ID register between the TDI and TDO pins in Shift-DR mode. The IDCODE instruction is the default instruction loaded in at power up and any time the controller is placed in the Test-Logic-Reset state. SAMPLE-Z If the SAMPLE-Z instruction is loaded in the instruction register, all RAM outputs are forced to an inactive drive state (highZ) and the Boundary Scan Register is connected between TDI and TDO when the TAP controller is moved to the Shift-DR state. RFU These instructions are Reserved for Future Use. In this device they replicate the BYPASS instruction. JTAG TAP Instruction Set Summary Instruction Code Description Notes EXTEST 000 Places the Boundary Scan Register between TDI and TDO. 1 IDCODE 001 Preloads ID Register and places it between TDI and TDO. 1, 2 SAMPLE-Z 010 Captures I/O ring contents. Places the Boundary Scan Register between TDI and TDO. Forces all RAM output drivers to High-Z except CQ. 1 RFU 011 Private, reserved for vendor use. 1 SAMPLE/PRELOAD 100 Captures I/O ring contents. Places the Boundary Scan Register between TDI and TDO. 1 GSI 101 GSI private instruction. 1 RFU 110 Private, reserved for vendor use. 1 BYPASS 111 Places Bypass Register between TDI and TDO. 1 Notes: 1. Instruction codes expressed in binary, MSB on left, LSB on right. 2. Default instruction automatically loaded at power-up and in test-logic-reset state. Rev: 1.00a 11/2011 31/36 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D08/09/18/36AE-300M JTAG Port Recommended Operating Conditions and DC Characteristics Parameter Symbol Min. Max. Unit Notes Test Port Input Low Voltage VILJ –0.3 0.3 * VDD V 1 Test Port Input High Voltage VIHJ 0.7 * VDD VDD +0.3 V 1 TMS, TCK and TDI Input Leakage Current IINHJ –300 1 uA 2 TMS, TCK and TDI Input Leakage Current IINLJ –1 100 uA 3 TDO Output Leakage Current IOLJ –1 1 uA 4 Test Port Output High Voltage VOHJ VDD – 200 mV — V 5, 6 Test Port Output Low Voltage VOLJ — 0.2 V 5, 7 Test Port Output CMOS High VOHJC VDD – 100 mV — V 5, 8 Test Port Output CMOS Low VOLJC — 100 mV V 5, 9 Notes: 1. Input Under/overshoot voltage must be –1 V < Vi < VDDn +1 V not to exceed 2.9 V maximum, with a pulse width not to exceed 20% tTKC. 2. VILJ ≤ VIN ≤ VDDn 3. 0 V ≤ VIN ≤ VILJn 4. Output Disable, VOUT = 0 to VDDn 5. The TDO output driver is served by the VDD supply. 6. IOHJ = –2 mA 7. IOLJ = + 2 mA 8. IOHJC = –100 uA 9. IOLJC = +100 uA JTAG Port AC Test Conditions Parameter Conditions Input high level VDD – 0.2 V Input low level 0.2 V Input slew rate 1 V/ns Input reference level VDD/2 Output reference level VDD/2 JTAG Port AC Test Load TDO 50Ω 30pF* VDD/2 * Distributed Test Jig Capacitance Notes: 1. Include scope and jig capacitance. 2. Test conditions as shown unless otherwise noted. Rev: 1.00a 11/2011 32/36 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D08/09/18/36AE-300M JTAG Port Timing Diagram tTKC tTKH tTKL TCK tTH tTS TDI tTH tTS TMS tTKQ TDO tTH tTS Parallel SRAM input JTAG Port AC Electrical Characteristics Parameter Symbol Min Max Unit TCK Cycle Time tTKC 50 — ns TCK Low to TDO Valid tTKQ — 20 ns TCK High Pulse Width tTKH 20 — ns TCK Low Pulse Width tTKL 20 — ns TDI & TMS Set Up Time tTS 10 — ns TDI & TMS Hold Time tTH 10 — ns Rev: 1.00a 11/2011 33/36 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D08/09/18/36AE-300M Package Dimensions—165-Bump FPBGA (Package E) A1 CORNER TOP VIEW BOTTOM VIEW Ø0.10 M C Ø0.25 M C A B Ø0.40~0.60 (165x) 1 2 3 4 5 6 7 8 9 10 11 A1 CORNER 11 10 9 8 7 6 5 4 3 2 1 A B C D E F G H J K L M N P R 1.0 14.0 17±0.05 1.0 A B C D E F G H J K L M N P R A 1.0 1.0 10.0 0.15 C B Rev: 1.00a 11/2011 0.20(4x) 0.36~0.46 1.50 MAX. SEATING PLANE C 15±0.05 34/36 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D08/09/18/36AE-300M Ordering Information—GSI SigmaQuad-II SRAM Org Part Number1 Type Package Speed (MHz) TJ2 4M x 8 GS8342D08AE-300M SigmaQuad-II SRAM 165-Pin BGA 300 M 4M x 9 GS8342D09AE-300M SigmaQuad-II SRAM 165-Pin BGA 300 M 2M x 18 GS8342D18AE-300M SigmaQuad-II SRAM 165-Pin BGA 300 M 1M x 36 GS8342D36AE-300M SigmaQuad-II SRAM 165-Pin BGA 300 M Notes: 1. Customers requiring delivery in Tape and Reel should add the character “T” to the end of the part number. Example: GS8342D36AE-300MT. 2. M = Military Temperature Range. Rev: 1.00a 11/2011 35/36 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology GS8342D08/09/18/36AE-300M Revision History File Name Types of Changes Format or Content • Creation of new datasheet • (Rev1.00a: Editorial updates) GS8342DxxA_M_r1 Rev: 1.00a 11/2011 Revisions 36/36 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 2011, GSI Technology