GS840E18/32/36T/B-180/166/150/100 256K x 18, 128K x 32, 128K x 36 4Mb Sync Burst SRAMs TQFP, BGA Commercial Temp Industrial Temp Features • FT pin for user configurable flow through or pipelined operation. • Dual Cycle Deselect (DCD) Operation. • 3.3V +10%/-5% Core power supply • 2.5V or 3.3V I/O supply. • LBO pin for linear or interleaved burst mode. • Internal input resistors on mode pins allow floating mode pins. • Default to Interleaved Pipelined Mode. • Byte write (BW) and/or global write (GW) operation. • Common data inputs and data outputs. • Clock Control, registered, address, data, and control. • Internal Self-Timed Write cycle. • Automatic power-down for portable applications. • JEDEC standard 100-lead TQFP or 119 Bump BGA package. Pipeline 3-1-1-1 Flow Through 2-1-1-1 tCycle tKQ IDD tKQ tCycle IDD -180 5.5ns 3.2ns 330mA 8ns 10ns 190mA -166 6.0ns 3.5ns 310mA 8.5ns 10ns 190mA -150 6.6ns 3.8ns 275mA 10ns 10ns 190mA -100 10ns 4.5ns 190mA 12ns 15ns 140mA 180Mhz - 100Mhz 3.3V VDD 3.3V & 2.5V I/O be used. New addresses can be loaded on every cycle with no degradation of chip performance. Flow Through / Pipeline Reads The function of the Data Output register can be controlled by the user via the FT mode pin/bump (pin 14 in the TQFP and bump 5R in the BGA, ). Holding the FT mode pin/bump low places the RAM in Flow through mode, causing output data to bypass the Data Output Register. Holding FT high places the RAM in Pipelined Mode, activating the rising edge triggered Data Output Register. DCD Pipelined Reads The GS840E18/32/36 is a DCD (Dual Cycle Deselect) pipelined synchronous SRAM. SCD (Single Cycle Deselect) versions are also available. DCD SRAMs pipeline disable commands to the same degree as read commands. DCD RAMs hold the deselect command for one full cycle and then begin turning off their outputs just after the second rising edge of clock. Byte Write and Global Write Byte write operation is performed by using byte write enable (BW) input combined with one or more individual byte write signals (Bx). In addition, Global Write (GW) is available for writing all bytes at one time, regardless of the Byte Write control inputs. Sleep Mode Functional Description Low power (Sleep mode) is attained through the assertion (High) of the ZZ signal, or by stopping the clock (CK). Memory data is retained during Sleep mode. Applications Core and Interface Voltages The GS840E18/32/36 is a 4,718,592 bit (4,194,304 bit for x32 version) high performance synchronous SRAM with a 2 bit burst address counter. Although of a type originally developed for Level 2 Cache applications supporting high performance CPU’s, the device now finds application in synchronous SRAM applications ranging from DSP main store to networking chip set support. The GS840E18/32/36 is available in a JEDEC standard 100-lead TQFP or 119 Bump BGA package. The GS840E18/32/36 operates on a 3.3V power supply and all inputs/ outputs are 3.3V and 2.5V compatible. Separate output power (VDDQ) pins are used to de-couple output noise from the internal circuit. Controls Addresses, data I/O’s, chip enables (E1, E2, E3), address burst control inputs (ADSP, ADSC, ADV) and write control inputs (Bx, BW, GW) are synchronous and are controlled by a positive edge triggered clock input (CK). Output enable (G) and power down control (ZZ) are asynchronous inputs. Burst cycles can be initiated with either ADSP or ADSC inputs. In Burst mode, subsequent burst addresses are generated internally and are controlled by ADV. The burst address counter may be configured to count in either linear or interleave order with the Linear Burst Order (LBO) input. The Burst function need not Rev: 2.05 6/2000 1/31 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com. © 1999, Giga Semiconductor, Inc. GS840E18/32/36T/B-180/166/150/100 A6 A7 E1 E2 NC NC BB BA E3 VDD VSS CK GW BW G ADSC ADSP ADV A8 A9 GS840E18 100 Pin TQFP Pinout LBO A5 A4 VSS NC NC DQB1 DQB2 VSS VDDQ DQB3 DQB4 FT VDD NC 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 256K x 18 10 71 Top View 11 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 Rev: 2.05 6/2000 A17 NC NC VDDQ VSS NC DQA9 DQA8 DQA7 VSS VDDQ DQA6 DQA5 VSS NC VDD ZZ DQA4 DQA3 VDDQ VSS DQA2 DQA1 NC NC VSS VDDQ NC NC NC A3 A2 A1 A0 NC NC VSS VDD NC NC A10 A11 A12 A13 A14 A15 A16 NC NC NC VDDQ 2/31 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com © 1999, Giga Semiconductor, Inc. . GS840E18/32/36T/B-180/166/150/100 A6 A7 E1 E2 BD BC BB BA E3 VDD VSS CK GW BW G ADSC ADSP ADV A8 A9 GS840E32 100 Pin TQFP Pinout LBO A5 A4 VSS DQC6 DQC5 DQC4 DQC3 VSS VDDQ DQC2 DQC1 FT VDD NC VSS DQD1 DQD2 VDDQ VSS DQD3 DQD4 DQD5 DQD6 VSS VDDQ DQD7 DQD8 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 128K x 32 10 71 Top View 11 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 Rev: 2.05 6/2000 NC DQB8 DQB7 VDDQ VSS DQB6 DQB5 DQB4 DQB3 VSS VDDQ DQB2 DQB1 VSS NC VDD ZZ DQA1 DQA2 VDDQ VSS DQA3 DQA4 DQA5 DQA6 VSS VDDQ DQA7 DQA8 NC A3 A2 A1 A0 NC NC VSS VDD NC NC A10 A11 A12 A13 A14 A15 A16 NC DQC8 DQC7 VDDQ 3/31 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com © 1999, Giga Semiconductor, Inc. . GS840E18/32/36T/B-180/166/150/100 A6 A7 E1 E2 BD BC BB BA E3 VDD VSS CK GW BW G ADSC ADSP ADV A8 A9 GS840E36 100 Pin TQFP Pinout LBO A5 A4 VSS DQC6 DQC5 DQC4 DQC3 VSS VDDQ DQC2 DQC1 FT VDD NC 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 128K x 36 10 71 Top View 11 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 Rev: 2.05 6/2000 DQB9 DQB8 DQB7 VDDQ VSS DQB6 DQB5 DQB4 DQB3 VSS VDDQ DQB2 DQB1 VSS NC VDD ZZ DQA1 DQA2 VDDQ VSS DQA3 DQA4 DQA5 DQA6 VSS VDDQ DQA7 DQA8 DQA9 A3 A2 A1 A0 NC NC VSS VDD NC NC A10 A11 A12 A13 A14 A15 A16 DQC9 DQC8 DQC7 VDDQ 4/31 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com © 1999, Giga Semiconductor, Inc. . GS840E18/32/36T/B-180/166/150/100 TQFP Pin Description Pin Location Symbol Type Description 37, 36 A0, A1 I Address field LSB’s and Address Counter preset Inputs 35, 34, 33, 32, 100, 99, 82, 81,44, 45, 46, 47, 48, 49, 50 A2-16 I Address Inputs 80 A17 I Address Inputs (x18 versions) 52, 53, 56, 57, 58, 59, 62, 63 68, 69, 72, 73, 74, 75, 78, 79 2, 3, 6, 7, 8, 9, 12, 13 18, 19, 22, 23, 24, 25, 28, 29 DQA1-DQA8 DQB1-DQB8 DQC1-DQC8 DQD1-DQD8 I/O Data Input and Output pins. (x32, x36 Version) 51, 80, 1, 30 DQA9, DQB9, DQC9, DQD9 I/O Data Input and Output pins. (x36 Version) 51, 80, 1, 30 NC 58, 59, 62, 63, 68, 69, 72, 73, 74 8, 9, 12, 13, 18, 19, 22, 23, 24 DQA1-DQA9 DQB1-DQB9 I/O Data Input and Output pins. (x18 Version) 51, 52, 53, 56, 57 75, 78, 79 1, 2, 3, 6, 7 25, 28, 29, 30 NC - No Connect (x18 Version) 87 BW I Byte Write. Writes all enabled bytes. Active Low. 93, 94 BA, BB I Byte Write Enable for DQA, DQB Data I/O’s. Active Low. 95, 96 BC, BD I Byte Write Enable for DQC, DQD Data I/O’s. Active Low. (x32, x36 Version) 95, 96 NC - No Connect (x18 Version) 89 CK I Clock Input Signal. Active High. 88 GW I Global Write Enable. Writes all bytes. Active Low. 98, 92 E1, E3 I Chip Enable. Active Low. 97 E2 I Chip Enable. Active High. 86 G I Output Enable. Active Low. 83 ADV I Burst address counter advance enable. Active Low. 84, 85 ADSP, ADSC I Address Strobe (Processor, Cache Controller). Active Low. 64 ZZ I Sleep Mode control. Active High. 14 FT I Flow Through or Pipeline mode. Active Low. 31 LBO I Linear Burst Order mode. Active Low. 15, 41, 65, 91 VDD I Core power supply. 5,10,17, 21, 26, 40, 55, 60, 67, 71, 76, 90 VSS I I/O and Core Ground. 4, 11, 20, 27, 54, 61, 70, 77 VDDQ I Output driver power supply. 16, 38, 39, 42, 43, 66 NC - No Connect. Rev: 2.05 6/2000 No Connect (x32 Version) 5/31 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com © 1999, Giga Semiconductor, Inc. . GS840E18/32/36T/B-180/166/150/100 GS840E18 Pad Out 119 Bump BGA - Top View Rev: 2.05 6/2000 1 2 3 4 5 6 7 A VDDQ A6 A7 ADSP A8 A9 VDDQ B NC E2 A4 ADSC A15 E3 NC C NC A5 A3 VDD A14 A16 NC D DQB1 NC VSS NC VSS DQA9 NC E NC DQB2 VSS E1 VSS NC DQA8 F VDDQ NC VSS G VSS DQA7 VDDQ G NC DQB3 BB ADV NC NC DQA6 H DQB4 NC VSS GW VSS DQA5 NC J VDDQ VDD NC VDD NC VDD VDDQ K NC DQB5 VSS CK VSS NC DQA4 L DQB6 NC NC NC BA DQA3 NC M VDDQ DQB7 VSS BW VSS NC VDDQ N DQB8 NC VSS A1 VSS DQA2 NC P NC DQB9 VSS A0 VSS NC DQA1 R NC A2 LBO VDD FT A13 NC T NC A10 A11 NC A12 A17 ZZ U VDDQ NC NC NC NC NC VDDQ 6/31 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com © 1999, Giga Semiconductor, Inc. . GS840E18/32/36T/B-180/166/150/100 GS840E32 Pad Out 119 Bump BGA - Top View Rev: 2.05 6/2000 1 2 3 4 5 6 7 A VDDQ A6 A7 ADSP A8 A9 VDDQ B NC E2 A4 ADSC A15 E3 NC C NC A5 A3 VDD A14 A16 NC D DQC4 NC VSS NC VSS NC DQB4 E DQC3 DQC8 VSS E1 VSS DQB8 DQB3 F VDDQ DQC7 VSS G VSS DQB7 VDDQ G DQC2 DQC6 BC ADV BB DQB6 DQB2 H DQC1 DQC5 VSS GW VSS DQB5 DQB1 J VDDQ VDD NC VDD NC VDD VDDQ K DQD1 DQD5 VSS CK VSS DQA5 DQA1 L DQD2 DQD6 BD NC BA DQA6 DQA2 M VDDQ DQD78 VSS BW VSS DQA7 VDDQ N DQD3 DQD8 VSS A1 VSS DQA8 DQA3 P DQD4 NC VSS A0 VSS NC DQA4 R NC A2 LBO VDD FT A13 NC T NC NC A10 A11 A12 NC ZZ U VDDQ NC NC NC NC NC VDDQ 7/31 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com © 1999, Giga Semiconductor, Inc. . GS840E18/32/36T/B-180/166/150/100 GS840E36Pad Out 119 Bump BGA - Top View Rev: 2.05 6/2000 1 2 3 4 5 6 7 A VDDQ A6 A7 ADSP A8 A9 VDDQ B NC E2 A4 ADSC A15 E3 NC C NC A5 A3 VDD A14 A16 NC D DQC4 DQC9 VSS NC VSS DQB9 DQB4 E DQC3 DQC8 VSS E1 VSS DQB8 DQB3 F VDDQ DQC7 VSS G VSS DQB7 VDDQ G DQC2 DQC6 BC ADV BB DQB6 DQB2 H DQC1 DQC5 VSS GW VSS DQB5 DQB1 J VDDQ VDD NC VDD NC VDD VDDQ K DQD1 DQD5 VSS CK VSS DQA5 DQA1 L DQD2 DQD6 BD NC BA DQA6 DQA2 M VDDQ DQD78 VSS BW VSS DQA7 VDDQ N DQD3 DQD8 VSS A1 VSS DQA8 DQA3 P DQD4 DQD9 VSS A0 VSS DQA9 DQA4 R NC A2 LBO VDD FT A13 NC T NC NC A10 A11 A12 NC ZZ U VDDQ NC NC NC NC NC VDDQ 8/31 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com © 1999, Giga Semiconductor, Inc. . GS840E18/32/36T/B-180/166/150/100 BGA Pin Description Pin Location Symbol Type Description N4, P4 A0, A1 I Address field LSB’s and Address Counter Preset Inputs. A2, A3, A5, A6, B3, B5, C2, C3, C5, C6, R2, R6, T3, T5 An I Address Inputs T4 An T2, T6 NC - No Connect (x32/36 Versions) T2, T6 An I Address Input (x18 Version) K7, K6, L7, L6, M6, N7, N6, P7 H7, H6, G7, G6, F6, E7, E6, D7 H1, H2, G1, G2, F2, E1, E2, D1 K1, K2, L1, L2, M2, N1, N2, P1 DQA1-DQA8 DQB1-DQB8 DQC1-DQC8 DQD1-DQD8 I/O Data Input and Output pins. (x32/36 Versions) P6, D6, D2, P2 DQA9, DQB9, DQC9, DQD9 I/O Data Input and Output pins. (x36 Version) P6, D6, D2, P2 NC - No Connect (x32 Version) L5, G5, G3, L3 BA, BB, BC, BD I Byte Write Enable for DQA, DQB, DQC, DQD I/O’s. Active Low. ( x36 Version) P7, N6, L6, K7, H6, G7, F6, E7, D6 D1, E2, G2, H1, K2, L1, M2, N1, P2 DQA1-DQA9 DQB1-DQB9 I/O Data Input and Output pins. (x18 Version) L5, G3 BA, BB I Byte Write Enable for DQA, DQB I/O’s. Active Low. ( x18 Version) B1, C1, R1, T1, U2, J3, U3, D4, L4, U4, J5, U5, U6, B7, C7, R7 NC - No Connect P6, N7, M6, L7, K6, H7, G6, E6, D7, D2, B1, E1, F2, G1, H2, K1, L2, N2, P1, G5, L3, T4 NC - No Connect (x18 Version) K4 CK I Clock Input Signal. Active High. M4 BW I Byte Write. Writes all enabled bytes. Active Low. H4 GW I Global Write Enable. Writes all bytes. Active Low. E4, B6 E1, E3 I Chip Enable. Active Low. B2 E2 I Chip Enable. Active High. F4 G I Output Enable. Active Low. G4 ADV I Burst address counter advance enable. Active Low. A4, B4 ADSP, ADSC I Address Strobe (Processor, Cache Controller). Active Low. T7 ZZ I Sleep Mode control. Active High. R5 FT I Flow Through or Pipeline mode. Active Low. R3 LBO I Linear Burst Order mode. Active Low. J2, C4, J4, R4, J6 VDD I Core power supply. D3, E3, F3, H3, K3, M3, N3, P3, D5, E5, F5, H5, K5, M5, N5, P5 VSS I I/O and Core Ground. A1, F1, J1, M1, U1, A7, F7, J7, M7, U7 VDDQ I Output driver power supply. Rev: 2.05 6/2000 Address Input (x32/36 Versions) 9/31 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com © 1999, Giga Semiconductor, Inc. . GS840E18/32/36T/B-180/166/150/100 GS840E18/32/36 Block Diagram Register A0-An D Q A0 A0 D0 Q0 A1 A1 D1 Q1 Counter Load A LBO ADV Memory Array CK ADSC ADSP Q D Register GW BW BA D Q Register D 36 Q BB 36 4 Register D Q D Q Q D D Register Register Q Register BC BD Register D Q Register E1 E3 E2 D Q Register D Q FT G ZZ 0 Power Down DQx0-DQx9 Control Note: Only x36 version shown for simplicity. Rev: 2.05 6/2000 10/31 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com © 1999, Giga Semiconductor, Inc. . GS840E18/32/36T/B-180/166/150/100 Mode Pin Functions Mode Name Pin Name State Burst Order Control LBO Output Register Control FT Power Down Control ZZ Function L Linear Burst H or NC Interleaved Burst L Flow Through H or NC Pipeline L or NC Active H Standby, IDD = ISB Note: There are pull up devices on LBO 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 tables. Burst Counter Sequences Interleaved Burst Sequence Linear Burst Sequence A[1:0] A[1:0] A[1:0] A[1:0] 1st address 00 01 10 11 2nd address 01 10 11 3rd address 10 11 4th address 11 00 A[1:0] A[1:0] A[1:0] A[1:0] 1st address 00 01 10 11 00 2nd address 01 00 11 10 00 01 3rd address 10 11 00 01 01 10 4th address 11 10 01 00 Note: The burst counter wraps to initial state on the 5th clock. Note: The burst counter wraps to initial state on the 5th clock. Byte Write Truth Table Function GW BW BA BB BC BD Notes Read H H X X X X 1 Read H L H H H H 1 Write byte A H L L H H H 2, 3 Write byte B H L H L H H 2, 3 Write byte C H L H H L H 2, 3, 4 Write byte D H L H H H L 2, 3, 4 Write all bytes H L L L L L 2, 3, 4 Write all bytes L X X X X X Note: 1. All byte outputs are active in read cycles regardless of the state of Byte Write Enable inputs. 2. Byte Write Enable inputs BA, BB, BC and/or BD may be used in any combination with BW to write single or multiple bytes. 3. All byte I/O’s remain High-Z during all write operations regardless of the state of Byte Write Enable inputs. 4. Bytes “C” and “D” are only available on the x32 and x36 versions. Rev: 2.05 6/2000 11/31 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com © 1999, Giga Semiconductor, Inc. . GS840E18/32/36T/B-180/166/150/100 Synchronous Truth Table Operation State Address Used Diagram Key5 E1 E2 ADSP ADSC ADV W3 DQ4 Deselect Cycle, Power Down None X H X X L X X High-Z Deselect Cycle, Power Down None X L F L X X X High-Z Deselect Cycle, Power Down None X L F H L X X High-Z Read Cycle, Begin Burst External R L T L X X X Q Read Cycle, Begin Burst External R L T H L X F Q Write Cycle, Begin Burst External W L T H L X T D Read Cycle, Continue Burst Next CR X X H H L F Q Read Cycle, Continue Burst Next CR H X X H L F Q Write Cycle, Continue Burst Next CW X X H H L T D Write Cycle, Continue Burst Next CW H X X H L T D Read Cycle, Suspend Burst Current X X H H H F Q Read Cycle, Suspend Burst Current H X X H H F Q Write Cycle, Suspend Burst Current X X H H H T D Write Cycle, Suspend Burst Current H X X H H T D Note: 1. X = Don’t Care, H = High, L = Low. 2. E = T (True) if E2 = 1 and E3 = 0; E = F (False) if E2 = 0 or E3 = 1. 3. W = T (True) and F (False) is defined in the Byte Write Truth Table preceding. 4. G is an asynchronous input. G can be driven high at any time to disable active output drivers. G low can only enable active drivers (shown as “Q” in the Truth Table above). 5. 6. 7. All input combinations shown above are tested and supported. Input combinations shown in gray boxes need not be used to accomplish basic synchronous or synchronous burst operations and may be avoided for simplicity. Tying ADSP high and ADSC low allows simple non-burst synchronous operations. See BOLD items above. Tying ADSP high and ADV low while using ADSC to load new addresses allows simple burst operations. See ITALIC items above. Rev: 2.05 6/2000 12/31 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com © 1999, Giga Semiconductor, Inc. . GS840E18/32/36T/B-180/166/150/100 Simplified State Diagram X Deselect W R Simple Burst Synchronous Operation Simple Synchronous Operation W X R R First Write CW First Read CR W X CR R R X Burst Write Burst Read X CR CW CR Notes: 1. The diagram shows only supported (tested) synchronous state transitions. The diagram presumes G is tied Low. 2. The upper portion of the diagram assumes active use of only the Enable (E1, E2, E3) and Write (BA, BB, BC, BD, BW and GW) control inputs and that ADSP is tied high and ADSC is tied low. 3. The upper and lower portions of the diagram together assume active use of only the Enable, Write and ADSC control inputs and assumes ADSP is tied high and ADV is tied low. Rev: 2.05 6/2000 13/31 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com © 1999, Giga Semiconductor, Inc. . GS840E18/32/36T/B-180/166/150/100 Simplified State Diagram with G X Deselect W R W X R R First Write CR CW W CW W X First Read X CR R Burst Write R CR CW W Burst Read X CW CR Notes: 1. The diagram shows supported (tested) synchronous state transitions plus supported transitions that depend upon the use of G. 2. Use of “Dummy Reads” (Read Cycles with G High) may be used to make the transition from Read cycles to Write cycles without passing through a Deselect cycle. Dummy Read cycles increment the address counter just like normal Read cycles. 3. Transitions shown in grey tone assume G has been pulsed high long enough to turn the RAM’s drivers off and for incoming data to meet Data Input Set Up Time. Rev: 2.05 6/2000 14/31 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com © 1999, Giga Semiconductor, Inc. . GS840E18/32/36T/B-180/166/150/100 Absolute Maximum Ratings (All voltages reference to VSS) Symbol Description Value Unit VDD Voltage on VDD Pins -0.5 to 4.6 V VDDQ Voltage in VDDQ Pins -0.5 to VDD V VCK Voltage on Clock Input Pin -0.5 to 6 V VI/O Voltage on I/O Pins -0.5 to VDDQ+0.5 (≤ 4.6 V max.) V VIN Voltage on Other Input Pins -0.5 to VDD+0.5 (≤ 4.6 V max.) V IIN Input Current on Any Pin +/- 20 mA IOUT Output Current on Any I/O Pin +/- 20 mA PD Package Power Dissipation 1.5 W TSTG Storage Temperature -55 to 125 oC TBIAS Temperature Under Bias -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 Absolute Maximum Ratings, for an extended period of time, may affect reliability of this component. Recommended Operating Conditions Parameter Symbol Min. Typ. Max. Unit Notes Supply Voltage VDD 3.135 3.3 3.6 V I/O Supply Voltage VDDQ 2.375 2.5 VDD V 1 Input High Voltage VIH 1.7 --- VDD+0.3 V 2 Input Low Voltage VIL -0.3 --- 0.8 V 2 Ambient Temperature (Commercial Range Versions) TA 0 25 70 °C 3 TA °C 3 Ambient Temperature (Industrial Range Versions) -40 25 85 Note: 1. Unless otherwise noted, all performance specifications quoted are evaluated for worst case at both 2.75V ≤ VDDQ ≤ 2.375V (i.e. 2.5V I/O) and 3.6V ≤ VDDQ ≤ 3.135V (i.e. 3.3V I/O) and quoted at whichever condition is worst case. 2. This device features input buffers compatible with both 3.3V and 2.5V 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 -2V > Vi < VDD+2V with a pulse width not to exceed 20% tKC. Rev: 2.05 6/2000 15/31 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com © 1999, Giga Semiconductor, Inc. . GS840E18/32/36T/B-180/166/150/100 Undershoot Measurement and Timing Overshoot Measurement and Timing VIH 20% tKC VDD+-2.0V VSS 50% 50% VDD VSS-2.0V 20% tKC VIL Capacitance (TA=25oC, f=1MHZ, VDD=3.3V) Parameter Symbol Test conditions Typ. Max. Unit Control Input Capacitance CI VDD=3.3V 3 4 pF Input Capacitance CIN VIN=0V 4 5 pF COUT VOUT=0V 6 7 pF Output Capacitance Note: This parameter is sample tested. Package Thermal Characteristics Rating Layer Board Symbol TQFP Max BGA Max Unit Notes Junction to Ambient (at 200 lfm) single RΘJA 40 38 °C/W 1,2,4 Junction to Ambient (at 200 lfm) four RΘJA 24 21 °C/W 1,2,4 RΘJC 9 5 Junction to Case (TOP) °C/W 3,4 Notes: 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: 2.05 6/2000 16/31 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com © 1999, Giga Semiconductor, Inc. . GS840E18/32/36T/B-180/166/150/100 AC Test Conditions Parameter Conditions Input high level 2.3V Input low level 0.2V Input slew rate 1V/ns Input reference level 1.25V Output reference level 1.25V Output load 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 2 Output Load 1 DQ 2.5V 50Ω 225Ω DQ 30pF* 5pF* VT=1.25V 225Ω * Distributed Test Jig Capacitance DC Electrical Characteristics Parameter Symbol Test Conditions Min Max IIL VIN = 0 to VDD -1uA 1uA ZZ Input Current IINZZ VDD ≥ VIN ≥ VIH 0V ≤ VIN ≤ VIH -1uA -1uA 1uA 300uA Mode Pin Input Current IINM VDD ≥ VIN ≥ VIL 0V ≤ VIN ≤ VIL -300uA -1uA 1uA 1uA Output Leakage Current IOL Output Disable, VOUT = 0 to VDD -1uA 1uA Output High Voltage VOH IOH = - 4mA, VDDQ=2.375V 1.7V Output High Voltage VOH IOH = - 4mA, VDDQ=3.135V 2.4V Output Low Voltage VOL IOL = 4mA Input Leakage Current (except mode pins) Rev: 2.05 6/2000 0.4V 17/31 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com © 1999, Giga Semiconductor, Inc. . GS840E18/32/36T/B-180/166/150/100 Operating Currents -180 Parameter Test Conditions Symbol Device Selected; All other inputs ≥VIH or ≤ VIL Output open IDD Pipeline Operating Current Standby Current ZZ ≥ VDD - 0.2V Deselect Current Device Deselected; All other inputs ≥ VIH or ≤ VIL Rev: 2.05 6/2000 0 to 70°C -40 to 85°C -166 0 to 70°C -40 to 85°C -150 0 to 70°C -40 to 85°C -100 0 to 70°C -40 to 85°C 330mA 340mA 310mA 320mA 275mA 285mA 190mA 200mA IDD 190mA 200mA 190mA 200mA 190mA 200mA 140mA 150mA Flow-Thru ISB Pipeline 30mA 40mA 30mA 40mA 30mA 40mA 30mA 40mA ISB Flow-Thru 30mA 40mA 30mA 40mA 30mA 40mA 30mA 40mA 120mA 130mA 110mA 120mA 105mA 115mA 80mA 90mA 80mA 65mA 75mA IDD Pipeline IDD Flow-Thru 90mA 80mA 90mA 80mA 90mA 18/31 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com © 1999, Giga Semiconductor, Inc. . GS840E18/32/36T/B-180/166/150/100 AC Electrical Characteristics Pipeline FlowThru Parameter Symbol Clock Cycle Time -180 -166 -150 -100 Unit Min Max Min Max Min Max Min Max tKC 5.5 --- 6.0 --- 6.7 --- 10 --- ns Clock to Output Valid tKQ --- 3.2 --- 3.5 --- 3.8 --- 4.5 ns Clock to Output Invalid tKQX 1.5 --- 1.5 --- 1.5 --- 1.5 --- ns Clock to Output in Low-Z tLZ 1 1.5 --- 1.5 --- 1.5 --- 1.5 --- ns Clock Cycle Time tKC 10.0 --- 10.0 --- 10.0 --- 15.0 --- ns Clock to Output Valid tKQ --- 8.0 --- 8.5 --- 10.0 --- 12.0 ns Clock to Output Invalid tKQX 3.0 --- 3.0 --- 3.0 --- 3.0 --- ns Clock to Output in Low-Z tLZ1 3.0 --- 3.0 --- 3.0 --- 3.0 --- ns Clock HIGH Time tKH 1.3 --- 1.3 --- 1.5 --- 2 --- ns Clock LOW Time tKL 1.5 --- 1.5 --- 1.7 --- 2.2 --- ns Clock to Output in High-Z tHZ1 1.5 3.2 1.5 3.5 1.5 3.8 1.5 5 ns G to Output Valid tOE --- 3.2 --- 3.5 --- 3.8 --- 5 ns G to output in Low-Z tOLZ1 0 --- 0 --- 0 --- 0 --- ns G to output in High-Z tOHZ1 --- 3.2 --- 3.5 --- 3.8 --- 5 ns Setup time tS 1.5 --- 1.5 --- 1.5 --- 2.0 --- ns Hold time tH 0.5 --- 0.5 --- 0.5 --- 0.5 --- ns ZZ setup time tZZS2 5 --- 5 --- 5 --- 5 --- ns ZZ hold time tZZH2 1 --- 1 --- 1 --- 1 --- ns ZZ recovery tZZR 20 --- 20 --- 20 --- 20 --- ns 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: 2.05 6/2000 19/31 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com © 1999, Giga Semiconductor, Inc. . GS840E18/32/36T/B-180/166/150/100 Write Cycle Timing Single Write Burst Write Deselected Write CK tS tH tKH tKL tKC ADSP is blocked by E1 inactive ADSP tS tH ADSC initiated write ADSC tS tH ADV tS tH A0-An ADV must be inactive for ADSP Write WR2 WR1 WR3 tS tH GW tS tH BW tS tH BA - BD WR1 WR1 WR2 tS tH WR3 WR3 E1 masks ADSP E1 tS tH Deselected with E2 E2 tS tH E2 and E3 only sampled with ADSP or ADSC E3 G tS tH DQA - DQD Rev: 2.05 6/2000 Hi-Z Write specified byte for 2a and all bytes for 2b, 2c& 2d D1a D2a D2b D2c D2d 20/31 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com D3a © 1999, Giga Semiconductor, Inc. . GS840E18/32/36T/B-180/166/150/100 Flow Through Read Cycle Timing Single Read Burst Read tKL CK tKH tS tH tKC ADSP is blocked by E1 inactive ADSP tS tH ADSC initiated read ADSC tS tH Suspend Burst Suspend Burst ADV tS tH A0-An RD1 RD2 RD3 tS tH tS tH GW BW BA - BD tS tH E1 masks ADSP E1 tS tH E2 and E3 only sampled with ADSP or ADSC Deselected with E2 E2 tS tH E3 tOE tOHZ G tKQX tOLZ DQA-DQD Q1a Hi-Z Q2a tKQX Q2b Q2c Q2d Q3a tLZ tHZ tKQ Rev: 2.05 6/2000 21/31 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com © 1999, Giga Semiconductor, Inc. . GS840E18/32/36T/B-180/166/150/100 Flow Through Read-Write Cycle Timing Single Write Single Read Burst Read CK tS tH tKC tKH tKL ADSP is blocked by E inactive ADSP tS tH ADSC initiated read ADSC tS tH ADV tS tH A0-An WR1 RD1 RD2 tS tH GW tH tS BW tS tH BA - BD WR1 tS tH E1 masks ADSP E1 tS tH E2 and E3 only sampled with ADSP and ADSC E2 tS tH Deselected with E3 E3 tOE tOHZ G tS tKQ DQA - DQD Hi-Z Q1a tH D1a Q2a Q2b Q2c Q2d Q2a Burst wrap around to it’s initial state Rev: 2.05 6/2000 22/31 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com © 1999, Giga Semiconductor, Inc. . GS840E18/32/36T/B-180/166/150/100 Pipelined DCD Read Cycle Timing Single Read tKL Burst Read CK tS tH tKH tKC ADSP is blocked by E1 inactive ADSP tS tH ADSC initiated read ADSC tS tH Suspend Burst ADV tS tH A0-An RD1 RD3 RD2 tS tH tS tH GW BW BA - BD tS tH E1 masks ADSP E1 tS tH E2 and E3 only sampled with ADSP or ADSC E2 tS tH Deselected with E2 E3 tOE G tOHZ Hi-Z tOLZ Q1a DQA-DQD tKQX Q2a tKQX Q2b Q2c Q2d Q3a tLZ tHZ tKQ Rev: 2.05 6/2000 23/31 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com © 1999, Giga Semiconductor, Inc. . GS840E18/32/36T/B-180/166/150/100 Pipelined DCD Read-Write Cycle Timing Single Write Burst Read Single Read tKL CK tS tH tKH ADSP is blocked by E1 inactive tKC ADSP tS tH ADSC initiated read ADSC tS tH ADV tS tH A0-An WR1 RD1 RD2 tS tH GW tS tH BW tS tH BA - BD WR1 tS tH E1 masks ADSP E1 tS tH E2 and E3 only sampled with ADSP and ADSC E2 tS tH Deselected with E3 E3 tOE tOHZ G DQA - DQD Rev: 2.05 6/2000 Hi-Z tS tH tKQ Q1a D1a Q2a 24/31 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com Q2b Q2C Q2d © 1999, Giga Semiconductor, Inc. . GS840E18/32/36T/B-180/166/150/100 CK tS tH tKC tKH tKL ADSP ADSC tZZS ZZ ~ ~ ~ ~ ~ ~ ~~ ~ ~ ~ Sleep Mode Timing Diagram tZZH tZZR Snooze Application Tips Single and Dual Cycle Deselect SCD devices force the use of “dummy read cycles” (read cycles that are launched normally but that are ended with the output drivers inactive) in a fully synchronous environment. Dummy read cycles waste performance but their use usually assures there will be no bus contention in transitions from reads to writes or between banks of RAMs. DCD SRAMs do not waste bandwidth on dummy cycles and are logically simpler to manage in a multiple bank application (wait states need not be inserted at bank address boundary crossings) but greater care must be exercised to avoid excessive bus contention. Rev: 2.05 6/2000 25/31 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com © 1999, Giga Semiconductor, Inc. . GS840E18/32/36T/B-180/166/150/100 GS 840E18/32/36 Output Driver Characteristics 60 Pull Down Drivers 40 20 VDDQ I Out 0 I Out (mA) VOut VSS -20 -40 Pull Up Drivers -60 -80 -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 LD Rev: 2.05 6/2000 3.3V PD LD 3.1V PD LD 3.1V PU LD 26/31 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com 3.3V PU LD 3.6V PU LD © 1999, Giga Semiconductor, Inc. . GS840E18/32/36T/B-180/166/150/100 TQFP Package Drawing Description Min. Nom. Max A1 Standoff 0.05 0.10 0.15 A2 Body Thickness 1.35 1.40 1.45 b Lead Width 0.20 0.30 0.40 c Lead Thickness 0.09 D Terminal Dimension 21.9 22.0 22.1 D1 Package Body 19.9 20.0 20.1 E Terminal Dimension 15.9 16.0 16.1 E1 Package Body 13.9 14.0 14.1 e Lead Pitch L Foot Length L1 Lead Length Y Coplanarity θ Lead Angle D D1 0.60 e b 0.75 1.00 0.10 0° 7° A1 A2 Y Notes: 1. All dimensions are in millimeters (mm). 2. Package width and length do not include mold protrusion Rev: 2.05 6/2000 c 0.20 0.65 0.45 L1 θ Pin 1 Symbol L 27/31 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com E1 E © 1999, Giga Semiconductor, Inc. . GS840E18/32/36T/B-180/166/150/100 Package Dimensions - 119 Pin BGA A Pin 1 Corner 7 6 5 4 3 2 1 A B C D E F G H J K L M N P R T U G B P S D N R Bottom View Top View Symbol Description A Width 13.8 14.0 14.2 B Length 21.8 22.0 22.2 C Package Height (including ball) - D Ball Size 0.60 0.75 0.90 E Ball Height 0.50 0.60 0.70 F Package Height (excluding balls) 1.46 1.70 G Width between Balls 1.27 K Package Height above board N Cut-out Package Width 12.00 P Foot Length 19.50 R Width of package between balls 7.62 S Length of package between balls 20.32 T Variance of Ball Height 0.15 C F E K T Package Dimensions - 119 Pin BGA Min. Nom. Max 0.80 2.40 0.90 1.00 Unit: mm Side View Rev: 2.05 6/2000 28/31 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com © 1999, Giga Semiconductor, Inc. . GS840E18/32/36T/B-180/166/150/100 Ordering Information for GSI Synchronous Burst RAMS Speed2 (Mhz/ TA3 ns) Org Part Number1 Type Package 256K x 18 GS840E18T-180 Pipeline/Flow Through TQFP 180/8 C 256K x 18 GS840E18T-166 Pipeline/Flow Through TQFP 166/8.5 C 256K x 18 GS840E18T-150 Pipeline/Flow Through TQFP 150/10 C 256K x 18 GS840E18T-100 Pipeline/Flow Through TQFP 100/12 C 128K x 32 GS840E32T-180 Pipeline/Flow Through TQFP 180/8 C 128K x 32 GS840E32T-166 Pipeline/Flow Through TQFP 166/8.5 C 128K x 32 GS840E32T-150 Pipeline/Flow Through TQFP 150/10 C 128K x 32 GS840E32T-100 Pipeline/Flow Through TQFP 100/12 C 128K x 36 GS840E36T-180 Pipeline/Flow Through TQFP 180/8 C 128K x 36 GS840E36T-166 Pipeline/Flow Through TQFP 166/8.5 C 128K x 36 GS840E36T-150 Pipeline/Flow Through TQFP 150/10 C 128K x 36 GS840E36T-100 Pipeline/Flow Through TQFP 100/12 C 256K x 18 GS840E18T-180I Pipeline/Flow Through TQFP 180/8 I 256K x 18 GS840E18T-166I Pipeline/Flow Through TQFP 166/8.5 I 256K x 18 GS840E18T-150I Pipeline/Flow Through TQFP 150/10 I 256K x 18 GS840E18T-100I Pipeline/Flow Through TQFP 100/12 I 128K x 32 GS840E32T-180I Pipeline/Flow Through TQFP 180/8 I 128K x 32 GS840E32T-166I Pipeline/Flow Through TQFP 166/8.5 I 128K x 32 GS840E32T-150I Pipeline/Flow Through TQFP 150/10 I 128K x 32 GS840E32T-100I Pipeline/Flow Through TQFP 100/12 I 128K x 36 GS840E36T-180I Pipeline/Flow Through TQFP 180/8 I 128K x 36 GS840E36T-166I Pipeline/Flow Through TQFP 166/8.5 I 128K x 36 GS840E36T-150I Pipeline/Flow Through TQFP 150/10 I 128K x 36 GS840E36T-100I Pipeline/Flow Through TQFP 100/12 I 256K x 18 GS840E18B-180 Pipeline/Flow Through BGA 180/8 C 256K x 18 GS840E18B-166 Pipeline/Flow Through BGA 166/8.5 C 256K x 18 GS840E18B-150 Pipeline/Flow Through BGA 150/10 C 256K x 18 GS840E18B-100 Pipeline/Flow Through BGA 100/12 C 128K x 32 GS840E32B-180 Pipeline/Flow Through BGA 180/8 C Status Not Available Not Available Not Available Notes: 1. Customers requiring delivery in Tape and Reel should add the character “T” to the end of the part number. Example: GS840E32T-7.5T. 2. The speed column indicates the cycle frequency (Mhz) of the device in Pipelined 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 for a complete listing of current offerings. Rev: 2.05 6/2000 29/31 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com © 1999, Giga Semiconductor, Inc. . GS840E18/32/36T/B-180/166/150/100 Speed2 (Mhz/ TA3 ns) Org Part Number1 Type Package 128K x 32 GS840E32B-166 Pipeline/Flow Through BGA 166/8.5 C 128K x 32 GS840E32B-150 Pipeline/Flow Through BGA 150/10 C 128K x 32 GS840E32B-100 Pipeline/Flow Through BGA 100/12 C 128K x 36 GS840E36B-180 Pipeline/Flow Through BGA 180/8 C 128K x 36 GS840E36B-166 Pipeline/Flow Through BGA 166/8.5 C 128K x 36 GS840E36B-150 Pipeline/Flow Through BGA 150/10 C 128K x 36 GS840E36B-100 Pipeline/Flow Through BGA 100/12 C 256K x 18 GS840E18B-180I Pipeline/Flow Through BGA 180/8 I 256K x 18 GS840E18B-166I Pipeline/Flow Through BGA 166/8.5 I 256K x 18 GS840E18B-150I Pipeline/Flow Through BGA 150/10 I 256K x 18 GS840E18B-100I Pipeline/Flow Through BGA 100/12 I 128K x 32 GS840E32B-180I Pipeline/Flow Through BGA 180/8 I 128K x 32 GS840E32B-166I Pipeline/Flow Through BGA 166/8.5 I 128K x 32 GS840E32B-150I Pipeline/Flow Through BGA 150/10 I 128K x 32 GS840E32B-100I Pipeline/Flow Through BGA 100/12 I 128K x 36 GS840E36B-180I Pipeline/Flow Through BGA 180/8 I 128K x 36 GS840E36B-166I Pipeline/Flow Through BGA 166/8.5 I 128K x 36 GS840E36B-150I Pipeline/Flow Through BGA 150/10 I 128K x 36 GS840E36B-100I Pipeline/Flow Through BGA 100/12 I Status Not Available Not Available Not Available Notes: 1. Customers requiring delivery in Tape and Reel should add the character “T” to the end of the part number. Example: GS840E32T-7.5T. 2. The speed column indicates the cycle frequency (Mhz) of the device in Pipelined 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 for a complete listing of current offerings. Rev: 2.05 6/2000 30/31 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com © 1999, Giga Semiconductor, Inc. . GS840E18/32/36T/B-180/166/150/100 Revision History Rev. Code: Old; New GS840E18/32/36 Rev 1.02c 5/ 1999; GS840E18/32/36 2.00 8/1999D GS840E18/32/362.00 8/ 1999;GS840E18/32/362.01 9/ 1999E Types of Changes Format or Content Format/Typos Content Format/Typos Content Page /Revisions;Reason • Document/Continued changing to new format. • Added Fine Pitch BGA Package. • • Took “E” out of 840HE...in Core and Interface Voltages. • Pin outs/New small caps format. • Timing Diagrams/New format. • Block Diagrams/New small caps format. • Pin outs/x32 & x36 TQFP/Changed pin 72 from DQA3 to DQB3. • Pin Description/Rearranged Address Inputs to match order on TQFP Pinout. • TQFP Package Diagram/Corrected Dimension D Max from 20.1 to 22.1. • GS840E18/32/362.01 9/ 1999E;GS840E18/32/362.02 • Took out Fine Pitch BGA Package. Package change in progress. GS840E18/32/362.0210-11/ 1999;GS840E18/32/362.032/ 2000G Format • New GSI Logo • Took “Pin” out of heading for consistency. GS840E18/32/362.032/2000G; 840E18_r2_04 Content 840E18_r2_04; 840E18_r2_05 Content Rev: 2.05 6/2000 • Updated pin description table • Updated BGA pin description table to meet JEDEC standard 31/31 Specifications cited are subject to change without notice. For latest documentation see http://www.gsitechnology.com © 1999, Giga Semiconductor, Inc. .