 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| Preliminary GS881Z18/36T-11/100/80/66 100-Pin TQFP Commercial Temp Industrial Temp Features * 512K x 18 and 256K x 36 configurations * User-configurable Pipelined and Flow Through mode * NBT (No Bus Turn Around) functionality allows zero wait * Read-Write-Read bus utilization * Fully pin-compatible with both pipelined and flow through NtRAMTM, NoBLTM and ZBTTM SRAMs * IEEE 1149.1 JTAG-compatible Boundary Scan * On-chip write parity checking; even or odd selectable * Pin-compatible with 2M, 4M and 16M devices * 3.3 V +10%/-5% core power supply * 2.5 V or 3.3 V I/O supply * LBO pin for Linear or Interleave Burst mode * Byte write operation (9-bit Bytes) * 3 chip enable signals for easy depth expansion * Clock Control, registered, address, data, and control * ZZ Pin for automatic power-down * JEDEC-standard 100-lead TQFP package 8Mb Pipelined and Flow Through 100 MHz-66 MHz 3.3 V VDD Synchronous NBT SRAMs 2.5 V and 3.3 V VDDQ Functional Description The GS881Z18/36T is an 8Mbit Synchronous Static SRAM. GSI's NBT SRAMs, like ZBT, NtRAM, NoBL or other pipelined read/double late write or flow through read/single late write SRAMs, allow utilization of all available bus bandwidth by eliminating the need to insert deselect cycles when the device is switched from read to write cycles. Because it is a synchronous device, address, data inputs, and read/ write control inputs are captured on the rising edge of the input clock. Burst order control (LBO) must be tied to a power rail for proper operation. Asynchronous inputs include the Sleep mode enable (ZZ) and Output Enable. Output Enable can be used to override the synchronous control of the output drivers and turn the RAM's output drivers off at any time. Write cycles are internally self-timed and initiated by the rising edge of the clock input. This feature eliminates complex offchip write pulse generation required by asynchronous SRAMs and simplifies input signal timing. The GS881Z18/36T may be configured by the user to operate in Pipeline or Flow Through mode. Operating as a pipelined synchronous device, in addition to the rising-edge-triggered registers that capture input signals, the device incorporates a rising-edge-triggered output register. For read cycles, pipelined SRAM output data is temporarily stored by the edge-triggered output register during the access cycle and then released to the output drivers at the next rising edge of clock. The GS881Z18/36T is implemented with GSI's high performance CMOS technology and is available in a JEDECStandard 100-pin TQFP package. -11 Pipeline 3-1-1-1 Flow Through 2-1-1-1 tCycle tKQ IDD tKQ tCycle IDD 10 ns 4.5 ns 210 mA 11 ns 15 ns 150 mA -100 10 ns 4.5 ns 210 mA 12 ns 15 ns 150 mA -80 12.5 ns 4.8 ns 190 mA 14 ns 15 ns 130 mA -66 15 ns 5 ns 170 mA 18 ns 20 ns 130 mA Flow Through and Pipelined NBT SRAM Back-to-Back Read/Write Cycles Clock Address Read/Write A R B W QA C R DB QA 1/34 D W QC DB E R DD QC F W QE DD QE Flow Through Data I/O Pipelined Data I/O Rev: 1.10 8/2000 (c) 1998, Giga Semiconductor, Inc. Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. NoBL is a trademark of Cypress Semiconductor Corp.. NtRAM is a trademark of Samsung Electronics Co.. ZBT is a trademark of Integrated Device Technology, Inc. Preliminary. GS881Z18/36T-11/100/80/66 GS881Z18T Pinout NC NC NC VDDQ VSS NC NC DQB1 DQB2 VSS VDDQ DQB3 DQB4 FT VDD DP VSS DQB5 DQB6 VDDQ VSS DQB7 DQB8 DQB9 NC VSS VDDQ NC NC NC 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 1 80 2 79 3 78 4 77 5 76 6 75 7 74 8 73 9 72 512K x 18 10 71 11 Top View 70 12 69 13 68 14 67 15 66 16 65 17 64 18 63 19 62 20 61 21 60 22 59 23 58 24 57 25 56 26 55 27 54 28 53 29 52 30 51 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 A6 A7 E1 E2 NC NC BB BA E3 VDD VSS CK W CKE G ADV NC A17 A8 A9 A18 NC NC VDDQ VSS NC DQA9 DQA8 DQA7 VSS VDDQ DQA6 DQA5 VSS QE VDD ZZ DQA4 DQA3 VDDQ VSS DQA2 DQA1 NC NC VSS VDDQ NC NC NC Rev: 1.10 8/2000 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com LBO A5 A4 A3 A2 A1 A0 TMS TDI VSS VDD TDO TCK A10 A11 A12 A13 A14 A15 A16 2/34 (c) 1998, Giga Semiconductor, Inc. Preliminary. GS881Z18/36T-11/100/80/66 GS881Z36T Pinout DQC9 DQC8 DQC7 VDDQ VSS DQC6 DQC5 DQC4 DQC3 VSS VDDQ DQC2 DQC1 FT VDD DP VSS DQD1 DQD2 VDDQ VSS DQD3 DQD4 DQD5 DQD6 VSS VDDQ DQD7 DQD8 DQD9 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 1 80 2 79 3 78 4 77 5 76 6 75 7 74 8 73 9 72 256K x 36 10 71 11 Top View 70 12 69 13 68 14 67 15 66 16 65 17 64 18 63 19 62 20 61 21 60 22 59 23 58 24 57 25 56 26 55 27 54 28 53 29 52 30 51 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 A6 A7 E1 E2 BD BC BB BA E3 VDD VSS CK W CKE G ADV NC A17 A8 A9 DQB9 DQB8 DQB7 VDDQ VSS DQB6 DQB5 DQB4 DQB3 VSS VDDQ DQB2 DQB1 VSS QE VDD ZZ DQA1 DQA2 VDDQ VSS DQA3 DQA4 DQA5 DQA6 VSS VDDQ DQA7 DQA8 DQA9 Rev: 1.10 8/2000 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com LBO A5 A4 A3 A2 A1 A0 TMS TDI VSS VDD TDO TCK A10 A11 A12 A13 A14 A15 A16 3/34 (c) 1998, Giga Semiconductor, Inc. Preliminary. GS881Z18/36T-11/100/80/66 100-Pin TQFP Pin Descriptions Pin Location 37, 36 35, 34, 33, 32, 100, 99, 83, 82, 81, 50, 49, 48, 47, 46, 45, 44 80 89 93 94 95 96 88 98 97 92 86 85 87 58, 59, 62,63, 68, 69, 72, 73, 74 8, 9, 12, 13, 18, 19, 22, 23, 24 51, 52, 53, 56, 57, 75, 78, 79, 1, 2, 3, 6, 7, 25, 28, 29, 30 51, 52, 53, 56, 57, 58, 59, 62,63 68, 69, 72, 73, 74, 75, 78, 79, 80 1, 2, 3, 6, 7, 8, 9, 12, 13 64 14 31 Symbol A0, A1 A2-A17 A18 CK BA BB BC BD W E1 E2 E3 G ADV CKE DQA1-DQA9 DQB1-DQB9 NC DQA1-DQA9 DQB1-DQB9 DQC1-DQC9 ZZ FT LBO Type In In In In In In In In In In In In In In In I/O I/O -- I/O I/O I/O I/O In In In Description Burst Address Inputs--Preload the burst counter Address Inputs Address Input (x18 Version Only) Clock Input Signal Byte Write signal for data inputs DQA1-DQA9; active low Byte Write signal for data inputs DQB1-DQB9; active low Byte Write signal for data inputs DQC1-DQC9; active low (x36 Version Only) Byte Write signal for data inputs DQD1-DQD9; active low (x36 Version Only) Write Enable; active low Chip Enable; active low Chip Enable; active high; for self decoded depth expansion Chip Enable; active low; for self decoded depth expansion Output Enable; active low Advance/Load--Burst address counter control pin Clock Input Buffer Enable; active low Byte A Data Input and Output pins (x18 Version Only) Byte B Data Input and Output pins (x18 Version Only) No Connect (x18 Version Only) Byte A Data Input and Output pins (x36 Versions Only) Byte B Data Input and Output pins (x36 Versions Only) Byte C Data Input and Output pins (x36 Versions Only) Byte D Data Input and Output pins (x36 Versions Only) Power down control; active high Pipeline/Flow Through Mode Control; active low Linear Burst Order; active low 18, 19, 22, 23, 24, 25, 28, 29, 30 DQD1-DQD9 Rev: 1.10 8/2000 4/34 (c) 1998, Giga Semiconductor, Inc. Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com Preliminary. GS881Z18/36T-11/100/80/66 Pin Location 38 39 42 43 15, 41, 65, 91 5,10, 17, 21, 26, 40, 55, 60, 67, 71, 76, 90 4, 11, 20, 27, 54, 61, 70, 77 16 66 42, 43,, 84 Symbol TMS TDI TDO TCK VDD VSS VDDQ DP QE NC Type -- -- -- -- In In In In Out -- Description Scan Test Mode Select Scan Test Data In Scan Test Data Out Scan Test Clock 3.3 V power supply Ground 3.3 V output power supply for noise reduction Parity Input--1 = Even, 0 = Odd Parity Error Out--Open Drain Output No Connect Rev: 1.10 8/2000 5/34 (c) 1998, Giga Semiconductor, Inc. Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com Preliminary. GS881Z18/36T-11/100/80/66 GS881Z18/36 ByteSafe NBT SRAM Functional Block Diagram QE DQa-DQn DP FT Parity Check Q Q Write Data K K Register 1 D D Write Data Write Address Burst Counter K Register 2 SA1' SA0' 18 Data Coherency Read, Write and D K K Control Logic SA1 SA0 K Write Address Register 1 Match Q E1 E2 BA BB BC A0-An LBO BD E3 W K FT ADV CK Rev: 1.10 8/2000 6/34 (c) 1998, Giga Semiconductor, Inc. Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com CKE G Write Drivers Memory Array Register 2 K Sense Amps K Preliminary. GS881Z18/36T-11/100/80/66 Functional Details Clocking Deassertion of the Clock Enable (CKE) input blocks the Clock input from reaching the RAM's internal circuits. It may be used to suspend RAM operations. Failure to observe Clock Enable set-up or hold requirements will result in erratic operation. Pipeline Mode Read and Write Operations All inputs (with the exception of Output Enable, Linear Burst Order and Sleep) are synchronized to rising clock edges. Single cycle read and write operations must be initiated with the Advance/Load pin (ADV) held low, in order to load the new address. Device activation is accomplished by asserting all three of the Chip Enable inputs (E1, E2, and E3). Deassertion of any one of the Enable inputs will deactivate the device. Function Read Write Byte "a" Write Byte "b" Write Byte "c" Write Byte "d" Write all Bytes Write Abort/NOP W H L L L L L L BA X L H H H L H BB X H L H H L H BC X H H L H L H BD X H H H L L H Read operation is initiated when the following conditions are satisfied at the rising edge of clock: CKE is asserted Low, all three chip enables (E1, E2, and E3) are active, the write enable input signals W is deasserted high, and ADV is asserted low. The address presented to the address inputs is latched in to 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. Write operation occurs when the RAM is selected, CKE is active and the Write input is sampled low at the rising edge of clock. The Byte Write Enable inputs (BA, BB, BC, and BD) determine which bytes will be written. All or none may be activated. A Write Cycle with no Byte Write inputs active is a no-op cycle. The pipelined NBT SRAM provides double late write functionality, matching the write command versus data pipeline length (2 cycles) to the read command versus data pipeline length (2 cycles). At the first rising edge of clock, Enable, Write, Byte Write(s), and Address are registered. The Data In associated with that address is required at the third rising edge of clock. Flow Through Mode Read and Write Operations Operation of the RAM in Flow Through mode is very similar to operations in Pipeline mode. Activation of a Read Cycle and the use of the Burst Address Counter is identical. In Flow Through mode the device may begin driving out new data immediately after new address are clocked into the RAM, rather than holding new data until the following (second) clock edge. Therefore, in Flow Through mode the read pipeline is one cycle shorter than in Pipeline mode. Write operations are initiated in the same way as well, but differ in that the write pipeline is one cycle shorter, preserving the ability to turn the bus from reads to writes without inserting any dead cycles. While the pipelined NBT RAMs implement a double late write protocol, in Flow Through mode a single late write protocol mode is observed. Therefore, in Flow Through mode, address and control are registered on the first rising edge of clock and data in is required at the data input pins at the second rising edge of clock. Rev: 1.10 8/2000 7/34 (c) 1998, Giga Semiconductor, Inc. Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com Preliminary. GS881Z18/36T-11/100/80/66 Synchronous Truth Table Operation Deselect Cycle, Power Down Deselect Cycle, Power Down Deselect Cycle, Power Down Deselect Cycle, Continue Read Cycle, Begin Burst Read Cycle, Continue Burst NOP/Read, Begin Burst Dummy Read, Continue Burst Write Cycle, Begin Burst Write Cycle, Continue Burst NOP/Write Abort, Begin Burst Write Abort, Continue Burst Clock Edge Ignore, Stall Sleep Mode Type Address E1 E2 E3 ZZ ADV W Bx G CKE CK D D D D R B R B W B W B None None None None External Next External Next External Next None Next Current None H X X X L X L X L X L X X X X X L X H X H X H X H X X X X H X X L X L X L X L X X X L L L L L L L L L L L L L H L L L H L H L H L H L H X X X X X X H X H X L X L X X X X X X X X X X X L L H H X X X X X X L L H H X X X X X X L L L L L L L L L L L L H X L-H L-H L-H L-H L-H L-H L-H L-H L-H L-H L-H L-H L-H X DQ High-Z High-Z High-Z High-Z Q Q High-Z High-Z D D High-Z Notes 1 1,10 2 1,2,10 3 1,3,10 2,3 High-Z 1,2,3,10 High-Z 4 Notes: 1. Continue Burst cycles, whether read or write, use the same control inputs; a Deselect continue cycle can only be entered into if a Deselect cycle is executed first 2. Dummy read and write abort can be considered NOPs because the SRAM performs no operation. A Write abort occurs when the W pin is sampled low but no Byte Write pins are active, so no Write operation is performed. 3. G can be wired low to minimize the number of control signals provided to the SRAM. Output drivers will automatically turn off during Write cycles. 4. If CKE High occurs during a pipelined read cycle, the DQ bus will remain active (Low Z). If CKE High occurs during a write cycle, the bus will remain in High Z. 5. X = Don't Care; H = Logic High; L = Logic Low; Bx = High = All Byte Write signals are high; Bx = Low = One or more Byte/Write signals are Low 6. All inputs, except G and ZZ must meet setup and hold times of rising clock edge. 7. Wait states can be inserted by setting CKE high. 8. This device contains circuitry that ensures all outputs are in High Z during power-up. 9. A 2-bit burst counter is incorporated. 10. The address counter is incriminated for all Burst continue cycles. Rev: 1.10 8/2000 8/34 (c) 1998, Giga Semiconductor, Inc. Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com Preliminary. GS881Z18/36T-11/100/80/66 Pipeline and Flow Through Read-Write Control State Diagram D B R Deselect W D W D R New Read R B New Write W B R W R W Burst Read B D Burst Write B D Key Input Command Code Notes 1. The Hold command (CKE Low) is not shown because it prevents any state change. Transition Current State (n) Next State (n+1) n n+1 2. W, R, B and D represent input command codes, as indicated in the Synchronous Truth Table. n+2 n+3 Clock (CK) Command Current State Next State Current State and Next State Definition for Pipelined and Flow Through Read/Write Control State Diagram Rev: 1.10 8/2000 9/34 (c) 1998, Giga Semiconductor, Inc. Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com Preliminary. GS881Z18/36T-11/100/80/66 Pipeline Mode Data I/O State Diagram Intermediate Intermediate BW High Z (Data In) D R Intermediate W Intermediate Intermediate RB Data Out (Q Valid) D W R High Z B D Intermediate Key Input Command Code Notes 1. The Hold command (CKE Low) is not shown because it prevents any state change. Transition Current State (n) Transition Next State (n+2) Intermediate State (N+1) 2. W, R, B, and D represent input command codes as indicated in the Truth Tables. n n+1 n+2 n+3 Clock (CK) Command Current State Intermediate State Next State Current State and Next State Definition for Pipeline Mode Data I/O State Diagram Rev: 1.10 8/2000 10/34 (c) 1998, Giga Semiconductor, Inc. Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com Preliminary. GS881Z18/36T-11/100/80/66 Flow Through Mode Data I/O State Diagram BW High Z (Data In) D R W RB Data Out (Q Valid) D W R High Z B D Key Input Command Code Notes 1. The Hold command (CKE Low) is not shown because it prevents any state change. Transition Current State (n) Next State (n+1) n n+1 2. W, R, B, and D represent input command codes as indicated in the Truth Tables. n+2 n+3 Clock (CK) Command Current State Next State Current State and Next State Definition for: Pipeline and Flow Through Read Write Control State Diagram Rev: 1.10 8/2000 11/34 (c) 1998, Giga Semiconductor, Inc. Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com Preliminary. GS881Z18/36T-11/100/80/66 Burst Cycles Although NBT RAMs are designed to sustain 100% bus bandwidth by eliminating turnaround cycle when there is transition from read to write, multiple back-to-back reads or writes may also be performed. NBT SRAMs provide an on-chip burst address generator that can be utilized, if desired, to further simplify burst read or write implementations. The ADV control pin, when driven high, commands the SRAM to advance the internal address counter and use the counter generated address to read or write the SRAM. The starting address for the first cycle in a burst cycle series is loaded into the SRAM by driving the ADV pin low, into Load mode. Burst Order The burst address counter wraps around to its initial state after four addresses (the loaded address and three more) have been accessed. The burst sequence is determined by the state of the Linear Burst Order pin (LBO). When this pin is Low, a linear burst sequence is selected. When the RAM is installed with the LBO pin tied high, Interleaved burst sequence is selected. See the tables below for details. Mode Pin Functions Mode Name Burst Order Control Output Register Control Power Down Control ByteSafe Data Parity Control Pin Name LBO FT ZZ DP State L H or NC L H or NC L or NC H L H or NC Function Linear Burst Interleaved Burst Flow Through Pipeline Active Standby, IDD = ISB Check for Odd Parity Check for Even Parity Note: There are pull-up devices on the LBO, DP and FT pins and a pull down device on the ZZ pin, so those input pins can be unconnected and the chip will operate in the default states as specified in the above table. Burst Counter Sequences Linear Burst Sequence A[1:0] A[1:0] A[1:0] A[1:0] 1st address 2nd address 3rd address 4th address 00 01 10 11 01 10 11 00 10 11 00 01 11 00 01 10 1st address 2nd address 3rd address 4th address Interleaved Burst Sequence A[1:0] A[1:0] A[1:0] A[1:0] 00 01 10 11 01 00 11 10 10 11 00 01 11 10 01 00 BPR 1999.05.18 Note: The burst counter wraps to initial state on the 5th clock. Note: The burst counter wraps to initial state on the 5th clock. Sleep Mode During normal operation, ZZ must be pulled low, either by the user or by its internal pull down resistor. When ZZ is pulled high, the SRAM will enter a Power Sleep mode after 2 cycles. At this time, internal state of the SRAM is preserved. When ZZ returns to low, the SRAM operates normally after 2 cycles of wake up time. Rev: 1.10 8/2000 12/34 (c) 1998, Giga Semiconductor, Inc. Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com Preliminary. GS881Z18/36T-11/100/80/66 Sleep mode is a low current, power-down mode in which the device is deselected and current is reduced to ISB2. The duration of Sleep mode is dictated by the length of time the ZZ is in a High state. After entering Sleep mode, all inputs except ZZ become disabled and all outputs go to High-Z The ZZ pin is an asynchronous, active high input that causes the device to enter Sleep mode. When the ZZ pin is driven high, ISB2 is guaranteed after the time tZZI is met. Because ZZ is an asynchronous input, pending operations or operations in progress may not be properly completed if ZZ is asserted. Therefore, Sleep mode must not be initiated until valid pending operations are completed. Similarly, when exiting Sleep mode during tZZR, only a Deselect or Read commands may be applied while the SRAM is recovering from Sleep mode. Sleep Mode Timing Diagram CK ZZ tZZS ~~ ~~ tZZR Sleep tZZH Designing for Compatibility The GSI NBT SRAMs offer users a configurable selection between Flow Through mode and Pipeline mode via the FT signal found on Pin 14. Not all vendors offer this option, however most mark Pin 14 as VDD or VDDQ on pipelined parts and VSS on flow through parts. GSI NBT SRAMs are fully compatible with these sockets. Pin 66, a No Connect (NC) on GSI's GS880Z18/36 NBT SRAM, the Parity Error open drain output on GSI's GS881Z18/36 NBT SRAM, is often marked as a power pin on other vendor's NBT-compatible SRAMs. Specifically, it is marked VDD or VDDQ on pipelined parts and VSS on flow through parts. Users of GSI NBT devices who are not actually using the ByteSafeTM parity feature may want to design the board site for the RAM with Pin 66 tied high through a 1k ohm resistor in Pipeline mode applications or tied low in Flow Through mode applications in order to keep the option to use non-configurable devices open. By using the pull-up resistor, rather than tying the pin to one of the power rails, users interested in upgrading to GSI's ByteSafe NBT SRAMs (GS881Z18/36), featuring Parity Error detection and JTAG Boundary Scan, will be ready for connection to the active low, open drain Parity Error output driver at Pin 66 on GSI's TQFP ByteSafe RAMs. ByteSafeTM Parity Functions This SRAM includes a write data parity check that checks the validity of data coming into the RAM on write cycles. In Flow Through mode, write data errors are reported in the cycle following the data input cycle. In Pipeline mode, write data errors are reported one clock cycle later. (See Write Parity Error Output Timing Diagram.) The Data Parity Mode (DP) pin must be tied high to set the RAM to check for even parity or low to check for odd parity. Read data parity is not checked by the RAM as data. Validity is best established at the data's destination. The Parity Error Output is an open drain output and drives low to indicate a parity error. Multiple Parity Error Output pins may share a common pull-up resistor. Rev: 1.10 8/2000 13/34 (c) 1998, Giga Semiconductor, Inc. Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com Preliminary. GS881Z18/36T-11/100/80/66 Write Parity Error Output Timing Diagram CK DQ Flow Through Mode D In A tKQ tLZ D In B tHZ tKQX Err A D In C D In D D In E QE Err C Pipelined Mode DQ D In A D In B tKQ tLZ D In C tHZ tKQX Err A D In D D In E QE Err C BPR 1999.05.18 Rev: 1.10 8/2000 14/34 (c) 1998, Giga Semiconductor, Inc. Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com Preliminary. GS881Z18/36T-11/100/80/66 Absolute Maximum Ratings (All voltages reference to VSS) Symbol VDD VDDQ VCK VI/O VIN IIN IOUT PD TSTG TBIAS Description Voltage on VDD Pins Voltage in VDDQ Pins Voltage on Clock Input Pin Voltage on I/O Pins Voltage on Other Input Pins Input Current on Any Pin Output Current on Any I/O Pin Package Power Dissipation Storage Temperature Temperature Under Bias Value -0.5 to 4.6 -0.5 to VDD -0.5 to 6 -0.5 to VDDQ +0.5 ( 4.6 V max.) -0.5 to VDD +0.5 ( 4.6 V max.) +/-20 +/-20 1.5 -55 to 125 -55 to 125 Unit V V V V V mA mA W oC 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 Absolute Maximum Ratings, for an extended period of time, may affect reliability of this component. Recommended Operating Conditions Parameter Supply Voltage I/O Supply Voltage Input High Voltage Input Low Voltage Ambient Temperature (Commercial Range Versions) Ambient Temperature (Industrial Range Versions) Symbol VDD VDDQ VIH VIL TA TA Min. 3.135 2.375 1.7 -0.3 0 -40 Typ. 3.3 2.5 -- -- 25 25 Max. 3.6 VDD VDD +0.3 0.8 70 85 Unit V V V V C C Notes 1 2 2 3 3 Notes: 1. Unless otherwise noted, all performance specifications quoted are evaluated for worst case at both 2.75 V VDDQ 2.375 V (i.e., 2.5 V I/O) and 3.6 V VDDQ 3.135 V (i.e., 3.3 V I/O), and quoted at whichever condition is worst case. 2. This device features input buffers compatible with both 3.3 V and 2.5 V I/O drivers. 3. 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. 4. Input Under/overshoot voltage must be -2 V > Vi < VDD +2 V with a pulse width not to exceed 20% tKC. Rev: 1.10 8/2000 15/34 (c) 1998, Giga Semiconductor, Inc. Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com Preliminary. GS881Z18/36T-11/100/80/66 Undershoot Measurement and Timing VIH VDD + 2.0 V VSS 50% VSS - 2.0 V 20% tKC VIL 50% VDD Overshoot Measurement and Timing 20% tKC Capacitance (TA = 25oC, f = 1 MHZ, VDD = 3.3 V) Parameter Input Capacitance Input/Output Capacitance Note: These parameters are sample tested. Symbol CIN CI/O Test conditions VIN = 0 V VOUT = 0 V Typ. 4 6 Max. 5 7 Unit pF pF Package Thermal Characteristics Rating Junction to Ambient (at 200 lfm) Junction to Ambient (at 200 lfm) Junction to Case (TOP) Layer Board single four -- Symbol RJA RJA RJC Max 40 24 9 Unit C/W C/W C/W Notes 1,2 1,2 3 Notes: 1. Junction temperature is a function of SRAM power dissipation, package thermal resistance, mounting board temperature, ambient. Temperature air flow, board density, and PCB thermal resistance. 2. SCMI G-38-87 3. Average thermal resistance between die and top surface, MIL SPEC-883, Method 1012.1 Rev: 1.10 8/2000 16/34 (c) 1998, Giga Semiconductor, Inc. Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com Preliminary. GS881Z18/36T-11/100/80/66 AC Test Conditions Parameter Input high level Input low level Input slew rate Input reference level Output reference level Output load Conditions 2.3 V 0.2 V 1 V/ns 1.25 V 1.25 V Fig. 1& 2 Notes: 1. Include scope and jig capacitance. 2. Test conditions as specified with output loading as shown in Fig. 1 unless otherwise noted. 3. Output Load 2 for tLZ, tHZ, tOLZ and tOHZ 4. Device is deselected as defined by the Truth Table. Output Load 1 DQ 50 VT = 1.25 V * Distributed Test Jig Capacitance Output Load 2 2.5 V 30pF* DQ 5pF* 225 225 DC Electrical Characteristics Parameter Input Leakage Current (except mode pins) ZZ Input Current Mode Pin Input Current Output Leakage Current Output High Voltage Output High Voltage Output Low Voltage Symbol IIL IINZZ IINM IOL VOH VOH VOL Test Conditions VIN = 0 to VDD VDD VIN VIH 0 V VIN VIH VDD VIN VIL 0 V VIN VIL Output Disable, VOUT = 0 to VDD IOH = -8 mA, VDDQ = 2.375 V IOH = -8 mA, VDDQ = 3.135 V IOL = 8 mA Min -1 uA -1 uA -1 uA -300 uA -1 uA -1 uA 1.7 V 2.4 V -- Max 1 uA 1 uA 300 uA 1 uA 1 uA 1 uA -- -- 0.4 V Rev: 1.10 8/2000 17/34 (c) 1998, Giga Semiconductor, Inc. Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com Preliminary. GS881Z18/36T-11/100/80/66 Operating Currents -11 Parameter Test Conditions Device Selected; All other inputs VIH or VIL Output open Symbol IDD Pipeline IDD Flow-through ISB Pipeline ISB Flow-through IDD Pipeline IDD Flow-through 0 to 70C 210 150 30 30 80 65 -40 to +85C 220 160 40 40 90 75 -100 0 to 70C 210 150 30 30 80 65 -40 to +85C 220 160 40 40 90 75 0 to 70C 190 130 30 30 70 55 -80 -40 to +85C 200 140 40 40 80 65 0 to 70C 170 130 30 30 65 55 -66 -40 to +85C 180 140 40 40 75 65 Unit Operating Current mA mA mA mA mA mA Standby Current ZZ VDD - 0.2 V Deselect Current Device Deselected; All other inputs VIH or VIL Rev: 1.10 8/2000 18/34 (c) 1998, Giga Semiconductor, Inc. Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com Preliminary. GS881Z18/36T-11/100/80/66 AC Electrical Characteristics Parameter Clock Cycle Time Pipeline Clock to Output Valid Clock to Output Invalid Clock to Output in Low-Z Clock Cycle Time Flowthrough Clock to Output Valid Clock to Output Invalid Clock to Output in Low-Z Clock HIGH Time Clock LOW Time Clock to Output in High-Z G to Output Valid G to output in Low-Z G to output in High-Z Setup time Hold time ZZ setup time ZZ hold time ZZ recovery Symbol tKC tKQ tKQX tLZ 1 -11 Min 10 -- 1.5 1.5 15.0 -- 3.0 3.0 1.7 2 1.5 -- 0 -- 1.5 0.5 5 1 20 Max -- 4.5 -- -- -- 11.0 -- -- -- -- 4.0 4.0 -- 4.0 -- -- -- -- -- 10 -- 1.5 1.5 -100 Min Max -- 4.5 -- -- -- 12.0 -- -- -- -- 4.5 4.5 -- 4.5 -- -- -- -- -- Min 12.5 -- 1.5 1.5 15.0 -- 3.0 3.0 2 2.2 1.5 -- 0 -- -- -- 5 1 20 -80 Max -- 4.8 -- -- -- 14.0 -- -- -- -- 4.8 4.8 -- 4.8 2.0 0.5 -- -- -- Min 15 -- 1.5 1.5 20 -- 3.0 3.0 2.3 2.5 1.5 -- 0 -- -- -- 5 1 20 -66 Max -- 5 -- -- -- 18.0 -- -- -- -- 5 5 -- 5 2.0 0.5 -- -- -- Unit ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns tKC tKQ tKQX tLZ1 tKH tKL tHZ1 tOE tOLZ1 tOHZ1 tS tH tZZS2 tZZH2 tZZR 15.0 -- 3.0 3.0 2 2.2 1.5 -- 0 -- 2.0 0.5 5 1 20 Notes: 1. These parameters are sampled and are not 100% tested. 2. ZZ is an asynchronous signal. However, in order to be recognized on any given clock cycle, ZZ must meet the specified setup and hold times as specified above. Rev: 1.10 8/2000 19/34 (c) 1998, Giga Semiconductor, Inc. Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com Preliminary. GS881Z18/36T-11/100/80/66 Pipeline Mode Read/Write Cycle Timing 1 CK tS tH tKH tKL tKC 2 3 4 5 6 7 8 9 10 CKE tS tH E* tS tH ADV tS tH W tS tH Bn tS tH A0-An A1 A2 A3 A4 tKQ tKQHZ tKQLZ D (A2+1) A5 tGLQV A6 tKHQZ A7 DQA-DQD D(A1) D(A2) Q(A3) Q(A4) Q (A4+1) D(A5) Q(A6) tS tH tOEHZ tOELZ tKQX G COMMAND Write D(A1) Write D(A2) BURST Read Write Q(A3) D(A2+1) Read Q(A4) BURST Read Q(A4+1) Write D(A5) Read Q(A6) Write D(A7) DESELECT DON'T CARE UNDEFINED *Note: E = High (False) if E1 = 1 or E2 = 0 or E3 = 1 Rev: 1.10 8/2000 20/34 (c) 1998, Giga Semiconductor, Inc. Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com Preliminary. GS881Z18/36T-11/100/80/66 Pipeline Mode No-Op, Stall and Deselect Timing 1 CK tS tH 2 3 4 5 6 7 8 9 10 CKE tS tH E* tS tH ADV tS tH W Bn A0-An A1 A2 A3 A4 A5 tKHQZ DQ D(A1) Q(A2) Q(A3) D(A4) Q(A5) tKQHZ COMMAND Write D(A1) Read Q(A2) STALL Read Q(A3) Write D(A4) STALL NOP Read Q(A5) DESELECT CONTINUE DESELECT DON'T CARE UNDEFINED *Note: E = High (False) if E1 = 1 or E2 = 0 or E3 = 1 Rev: 1.10 8/2000 21/34 (c) 1998, Giga Semiconductor, Inc. Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com Preliminary. GS881Z18/36T-11/100/80/66 Flow Through Mode Read/Write Cycle Timing 1 CK tS tH tKH tKL tKC 2 3 4 5 6 7 8 9 10 CKE tS tH E* tS tH ADV tS tH W tS tH Bn tS tH A2 A3 tKQ tKQHZ tKQLZ D (A2+1) Q (A4+1) A0-An A1 A4 tGLQV A5 tKHQZ A6 A7 DQ D(A1) D(A2) Q(A3) Q(A4) D(A5) Q(A6) tS tH tOEHZ tOELZ tKQX G COMMAND Write D(A1) Write D(A2) BURST Read Write Q(A3) D(A2+1) Read Q(A4) BURST Read Q(A4+1) Write D(A5) Read Q(A6) Write D(A7) DESELECT DON'T CARE UNDEFINED *Note: E = High (False) if E1 = 1 or E2 = 0 or E3 = 1 Rev: 1.10 8/2000 22/34 (c) 1998, Giga Semiconductor, Inc. Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com Preliminary. GS881Z18/36T-11/100/80/66 Flow Through Mode No-Op, Stall and Deselect Timing 1 CK tS tH 2 3 4 5 6 7 8 9 10 CKE tS tH E* tS tH ADV W Bn A0-An A1 A2 A3 A4 A5 tKHQZ DQ D(A1) Q(A2) Q(A3) D(A4) Q(A5) tKQHZ COMMAND Write D(A1) Read Q(A2) STALL Read Q(A3) Write D(A4) STALL NOP Read Q(A5) DESELECT CONTINUE DESELECT DON'T CARE UNDEFINED *Note: E = High (False) if E1 = 1 or E2 = 0 or E3 = 1 Rev: 1.10 8/2000 23/34 (c) 1998, Giga Semiconductor, Inc. Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com Preliminary. GS881Z18/36T-11/100/80/66 JTAG Port Operation Overview The JTAG Port on this RAM operates in a manner consistent with IEEE Standard 1149.1-1990, a serial boundary scan interface standard (commonly referred to as JTAG), but does not implement all of the functions required for 1149.1 compliance. Some functions have been modified or eliminated because they can slow the RAM. Nevertheless, the RAM supports 1149.1-1990 TAP (Test Access Port) Controller architecture, and can be expected to function in a manner that does not conflict with the operation of Standard 1149.1 compliant devices. The JTAG Port interfaces with conventional TTL / CMOS logic level signaling. 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 TCK Pin Name Test Clock I/O In In Description Clocks all TAP events. All inputs are captured on the rising edge of TCK and all outputs propagate from the falling edge of TCK. 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. 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. Output that is active depending on the state of the TAP state machine. Output changes in response to the falling edge of TCK. This is the output side of the serial registers placed between TDI and TDO. TMS Test Mode Select TDI Test Data In In TDO Test Data Out Out 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 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 are serial shift registers that capture serial input data on the rising edge of TCK and push 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 RAMs JTAG Port to another device in the scan chain with as little delay as possible. Rev: 1.10 8/2000 24/34 (c) 1998, Giga Semiconductor, Inc. Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com Preliminary. GS881Z18/36T-11/100/80/66 Boundary Scan Register 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. Two TAP instructions can be used to activate the Boundary Scan Register. JTAG TAP Block Diagram 0 Bypass Register 210 Instruction Register TDI ID Code Register 31 30 29 TDO * *** 210 Boundary Scan Register n ****** *** 210 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. ID Register Contents Die Revision Code Bit # x36 x18 Not Used I/O Configuration GSI Technology JEDEC Vendor ID Code 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 X X X X X X X X 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 011011001 0 011011001 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 Rev: 1.10 8/2000 25/34 (c) 1998, Giga Semiconductor, Inc. Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com Presence Register 0 1 1 Preliminary. GS881Z18/36T-11/100/80/66 (Private) instructions. Some Public instructions, are mandatory for 1149.1 compliance. Optional Public instructions must be implemented in prescribed ways. Although the TAP controller in this device follows the 1149.1 conventions, it is not 1194.1compliant because some of the mandatory instructions are not fully implemented. The TAP on this device may be used to monitor all input and I/O pads, but cannot be used to load address, data or control signals into the RAM or to preload the I/O buffers.This device will not perform EXTEST, INTEST or the SAMPLE/PRELOAD command. 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. JTAG Tap Controller State Diagram 1 Test Logic Reset 0 1 1 1 0 Run Test Idle Select DR 0 1 Select IR 0 1 Capture DR 0 Capture IR 0 Shift DR 1 1 0 1 Shift IR 1 0 Exit1 DR 0 Exit1 IR 0 Pause DR 1 0 Pause IR 1 0 Exit2 DR 1 0 Exit2 IR 1 0 Update DR 1 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 Rev: 1.10 8/2000 26/34 (c) 1998, Giga Semiconductor, Inc. Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com Preliminary. GS881Z18/36T-11/100/80/66 Register. 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. Because the PRELOAD portion of the command is not implemented in this device, moving the controller to the UpdateDR state with the SAMPLE / PRELOAD instruction loaded in the Instruction Register has the same effect as the Pause-DR command. This functionality is not Standard 1149.1-compliant. EXTEST EXTEST is an IEEE 1149.1 mandatory public instruction. It is to be executed whenever the instruction register, whatever length it may be in the device, is loaded with all logic 0s. EXTEST is not implemented in this device. Therefore, this device is not 1149.1-compliant. Nevertheless, this RAM's TAP does respond to an all zeros instruction, as follows. With the EXTEST (000) instruction loaded in the instruction register the RAM responds just as it does in response to the BYPASS instruction described above. 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 (high-Z) 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 EXTEST IDCODE SAMPLE-Z RFU SAMPLE/ PRELOAD GSI RFU BYPASS Code 000 001 010 011 100 101 110 111 Description Replicates BYPASS instruction. Places Bypass Register between TDI and TDO. This RAM does not implement 1149.1 EXTEST function. *Not 1149.1 Compliant * Preloads ID Register and places it between TDI and TDO. Captures I/O ring contents. Places the Boundary Scan Register between TDI and TDO. Forces all RAM output drivers to High-Z. Do not use this instruction; Reserved for Future Use. Replicates BYPASS instruction. Places Bypass Register between TDI and TDO. Captures I/O ring contents. Places the Boundary Scan Register between TDI and TDO. This RAM does not implement 1149.1 PRELOAD function. *Not 1149.1 Compliant * GSI private instruction. Do not use this instruction; Reserved for Future Use. Replicates BYPASS instruction. Places Bypass Register between TDI and TDO. Places Bypass Register between TDI and TDO. Notes 1 1, 2 1 1 1 1 1 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: 1.10 8/2000 27/34 (c) 1998, Giga Semiconductor, Inc. Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com Preliminary. GS881Z18/36T-11/100/80/66 JTAG Port Recommended Operating Conditions and DC Characteristics Parameter Test Port Input High Voltage Test Port Input Low Voltage TMS, TCK and TDI Input Leakage Current TMS, TCK and TDI Input Leakage Current TDO Output Leakage Current Test Port Output High Voltage Test Port Output Low Voltage Symbol Min. VIHT VILT IINTH IINTL IOLT VOHT VOLT 1.7 -0.3 -300 -1 -1 2.4 -- Max. VDD +0.3 0.8 1 1 1 -- 0.4 Unit Notes V V uA uA uA V V 1, 2 1, 2 3 4 5 6, 7 6, 8 Notes: 1. This device features input buffers compatible with both 3.3 V and 2.5 V I/O drivers. 2. Input Under/overshoot voltage must be -2 V > Vi < VDD +2 V with a pulse width not to exceed 20% tTKC. 3. VDD VIN VIL 4. 0 V VIN VIL 5. Output Disable, VOUT = 0 to VDD 6. The TDO output driver is served by the VDD supply. 7. IOH = -4 mA 8. IOL = +4 mA JTAG Port AC Test Conditions Parameter Input high level Input low level Input slew rate Input reference level Output reference level Notes: 1. Include scope and jig capacitance. Conditions 2.3 V 0.2 V 1 V/ns 1.25 V 1.25 V DQ JTAG Port AC Test Load 50 VT = 1.25 V * Distributed Test Jig Capacitance 30pF* Rev: 1.10 8/2000 28/34 (c) 1998, Giga Semiconductor, Inc. Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com Preliminary. GS881Z18/36T-11/100/80/66 JTAG Port Timing Diagram tTKH TCK tTKL tTKC tTS TMS TDI TDO tTKQ tTH JTAG Port AC Electrical Characteristics Parameter TCK Cycle Time TCK Low to TDO Valid TCK High Pulse Width TCK Low Pulse Width TDI & TMS Set Up Time TDI & TMS Hold Time Symbol tTKC tTKQ tTKH tTKL tTS tTH Min 20 -- 10 10 5 5 Max -- 10 -- -- -- -- Unit ns ns ns ns ns ns Rev: 1.10 8/2000 29/34 (c) 1998, Giga Semiconductor, Inc. Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com Preliminary. GS881Z18/36T-11/100/80/66 GS881Z18/36T TQFP Boundary Scan Register Order 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 DQB1 DQB2 DQB3 DQB4 DQB5 DQB6 DQB7 DQB8 x36 = DQB9 DQA8 DQA7 DQA6 DQA5 DQA4 DQA3 DQA2 DQA1 ZZ QE DQA5 DQA6 DQA7 DQA8 DQA9 NC = 1 NC = 1 NC = 1 A18 x36 PH = 0 PH = 0 A10 A11 A12 A13 A14 A15 A16 x36 = DQA9 x18 Pin n/a n/a 44 45 46 47 48 49 50 Order 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 x36 A9 A8 A17 NC = 0 ADV G CKE W CK PH = 1 PH = 1 E3 BA BB BC BD E2 E1 A7 A6 x36 = DQC9 DQC8 DQC7 DQC6 DQC5 DQC4 DQC3 DQC2 DQC1 x18 Pin 81 82 83 84 85 86 87 88 89 n/a n/a 92 93 94 Order 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 x36 FT DP PH = 1 DQD1 DQD2 DQD3 DQD4 DQD5 DQD6 DQD7 DQD8 x36 = DQD9 LBO A5 A4 A3 A2 A1 A0 PH = 0 x18 Pin 14 16 n/a DQB5 DQB6 DQB7 DQB8 DQB9 NC = 1 NC = 1 NC = 1 NC = 1 18 19 22 23 24 25 28 29 30 31 32 33 34 35 36 37 n/a NC = 1 NC = 1 NC = 1 NC = 1 NC = 1 DQA1 DQA2 DQA3 DQA4 51 52 53 56 57 58 59 62 63 64 66 68 69 72 73 74 75 78 79 80 NC = 1 NC = 1 95 96 97 98 99 100 NC = 1 NC = 1 NC = 1 NC = 1 NC = 1 DQB1 DQB2 DQB3 DQB4 1 2 3 6 7 8 9 12 13 BPR 1999.08.11 Notes: 1. The Boundary Scan Register contains a number of registers that are not connected to any pin. They default to the value shown at reset. 2. Registers are listed in exit order (i.e., Location 1 is the first out of the TDO pin). 3. NC = No Connect, NA = Not Active, PH = Place Holder (No associated pin) Rev: 1.10 8/2000 30/34 (c) 1998, Giga Semiconductor, Inc. Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com Preliminary. GS881Z18/36T-11/100/80/66 Output Driver Characteristics 120.0 100.0 Pull Down Drivers 80.0 60.0 40.0 20.0 VDDQ I Out I Out (mA) 0.0 VOut -20.0 VS S -40.0 -60.0 Pull Up Drivers -80.0 -100.0 -120.0 -140.0 -0.5 0 0.5 1 1.5 2 2.5 3 3.5 4 V Out (Pull Down) VDDQ - V Out (Pull Up) 3.6V PD HD 3.3V PD HD 3.1V PD HD 3.1V PU HD 3.3V PU HD 3.6V PU HD BPR 1999.05.18 Rev: 1.10 8/2000 31/34 (c) 1998, Giga Semiconductor, Inc. Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com Preliminary. GS881Z18/36T-11/100/80/66 TQFP Package Drawing L Symbol A1 A2 b c D D1 E E1 e L L1 Y Description Standoff Body Thickness Lead Width Lead Thickness Terminal Dimension Package Body Terminal Dimension Package Body Lead Pitch Foot Length Lead Length Coplanarity Lead Angle Min. Nom. Max 0.05 1.35 0.20 0.09 21.9 19.9 15.9 13.9 -- 0.45 -- -- 0 0.10 1.40 0.30 -- 22.0 20.0 16.0 14.0 0.65 0.60 1.00 -- -- 0.15 1.45 0.40 0.20 22.1 20.1 16.1 14.1 -- 0.75 -- 0.10 L1 c Pin 1 D D1 e b A1 Y A2 7 E1 E Notes: 1. All dimensions are in millimeters (mm). 2. Package width and length do not include mold protrusion. BPR 1999.05.18 Rev: 1.10 8/2000 32/34 (c) 1998, Giga Semiconductor, Inc. Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com Preliminary. GS881Z18/36T-11/100/80/66 Ordering Information--GSI NBT Synchronous SRAM Org 512K x 18 512K x 18 512K x 18 512K x 18 256K x 36 256K x 36 256K x 36 256K x 36 512K x 18 512K x 18 512K x 18 512K x 18 256K x 36 256K x 36 256K x 36 256K x 36 Part Number1 GS881Z18T-11 GS881Z18T-100 GS881Z18T-80 GS881Z18T-66 GS881Z36T-11 GS881Z36T-100 GS881Z36T-80 GS881Z36T-66 GS881Z18T-11I GS881Z18T-100I GS881Z18T-80I GS881Z18T-66I GS881Z36T-11I GS881Z36T-100I GS881Z36T-80I GS881Z36T-66I Type ByteSafe NBT Pipeline/Flow Through ByteSafe NBT Pipeline/Flow Through ByteSafe NBT Pipeline/Flow Through ByteSafe NBT Pipeline/Flow Through ByteSafe NBT Pipeline/Flow Through ByteSafe NBT Pipeline/Flow Through ByteSafe NBT Pipeline/Flow Through ByteSafe NBT Pipeline/Flow Through ByteSafe NBT Pipeline/Flow Through ByteSafe NBT Pipeline/Flow Through ByteSafe NBT Pipeline/Flow Through ByteSafe NBT Pipeline/Flow Through ByteSafe NBT Pipeline/Flow Through ByteSafe NBT Pipeline/Flow Through ByteSafe NBT Pipeline/Flow Through ByteSafe NBT Pipeline/Flow Through Package TQFP TQFP TQFP TQFP TQFP TQFP TQFP TQFP TQFP TQFP TQFP TQFP TQFP TQFP TQFP TQFP Speed2 (MHz/ns) 100/11 100/12 80/14 66/18 100/11 100/12 80/14 66/18 100/11 100/12 80/14 66/18 100/11 100/12 80/14 66/18 TA3 C C C C C C C C I I I I I I I I Status Notes: 1. Customers requiring delivery in Tape and Reel should add the character "T" to the end of the part number. Example: GS882Z36T-100IT. 2. The speed column indicates the cycle frequency (MHz) of the device in Pipeline mode and the latency (ns) in Flow Through mode. Each device is Pipeline/Flow Through mode-selectable by the user. 3. TA = C = Commercial Temperature Range. TA = I = Industrial Temperature Range. 4. GSI offers other versions this type of device in many different configurations and with a variety of different features, only some of which are covered in this data sheet. See the GSI Technology web site (www.gsitechnology.com) for a complete listing of current offerings Rev: 1.10 8/2000 33/34 (c) 1998, Giga Semiconductor, Inc. Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com Preliminary. GS881Z18/36T-11/100/80/66 DS/DateRev. Code: Old; New Types of Changes Page /Revisions/Reason Format or Content * Last Page/Fixed "GSGS.." in Ordering Information Note.Document/Changed format of all E's from EN to EN. * Timing Diagrams/Changed format. ex. A0 to A0. * Flow Through Timing Diagrams/Upper case "T" in Flow Through. thru to Through. * Pin outs/Block Diagrams -Updated format to small caps. * Added Rev History. * 5/Fixed TQFP pin description table to match pinout/ Enhancement. * 5/Changed chip enables to match pins./Clarification * Ordered Address inputs in pin description table to match pin out. * Changed Dimension D in Dimension table from 20.1 to 22.1/ Correction. * Speed Bins on Page 1/Last column-changed 12ns to 15ns and 15ns to 12ns. * Improved Appearance of Timing Diagrams. * Minor formatting changes. * New GSI Logo. * Removed 166 and 150 MHz speed bins * Used 100 MHz Pipeline numbers for 133 MHz * Changed all 133 MHz references to 11 ns * Updated format to comply with Technical Publications standards * Updated Capitance table--removed Input row and changed Output row to I/O Format/Typos GS881Z18/36TRev1.04h 5/ 1999; 1.05 9/1999 Content GS881Z18/36T 1.05 9/ 1999K/ 1.06 10/1999 GS881Z18/36T 1.06 9/ 1999K 1.07 1/2000L Format Content Rev.1.08; 881Z18_r1_09 Content/Format 881Z18_r1_09; 881Z18_r1_10 Content Rev: 1.10 8/2000 34/34 (c) 1998, Giga Semiconductor, Inc. Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com |
Price & Availability of GS881Z18T-80
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |