AS5SP256K36DQ-40IT

98 97 96 95 92 91 89 87 84 99 94 93 90 88 86 85 83 DQPc DQc DQc VDDQ VSSQ 100 82 81 9.0Mb, 256K x 36, Synchronous SRAM Pipeline Burst, Single Cycle Deselect 1 2 3 4 5 6 7 8 9 A A CE1\ CE2 BWd\ BWc\ BWb\ BWa\ CE3\ VDD VSS CLK GW\ BWE\ OE\ ADSC\ ADSP\ ADV\ A A Austin Semiconductor, Inc. Plastic Encapsulated Microcircuit COTS COTS PEM CO SSRAM AS5SP256K36DQ 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 FEATURES • Synchronous Operation in relation to the input Clock DQc DQc • 2 Stage Registers resulting in Pipeline operation DQc DQc • On chip address counter (base +3) for Burst operations VSSQ VDDQ • Self-Timed Write Cycles DQc DQc • On-Chip Address and Control Registers NC VDD SSRAM [SPB] • Byte Write support NC VSS • Global Write support DQd DQd • On-Chip low power mode [powerdown] via ZZ pin VDDQ VSSQ • Interleaved or Linear Burst support via Mode pin DQd DQd • Three Chip Enables for ease of depth expansion without DQd DQd • Data Contention. VSSQ VDDQ • Two Cycle load, Single Cycle Deselect DQd DQd • Asynchronous Output Enable (OE\) DQPd • Three Pin Burst Control (ADSP\, ADSC\, ADV\) • 3.3V Core Power Supply • 3.3V/2.5V IO Power Supply • JEDEC Standard 100 pin TQFP Package, MS026-D/BHA • Available in Industrial, Enhanced, and Mil-Temperature Operating Ranges 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 DQPb DQb DQb VDDQ VSSQ DQb DQb DQb DQb VSSQ VDDQ DQb DQb VSS NC VDD ZZ DQa DQa VDDQ VSSQ DQa DQa DQa DQa VSSQ VDDQ DQa DQa DQPa 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 MODE A A A A A1 A0 NC* NC* VSS FAST ACCESS TIMES Parameter Cycle Time Clock Access Time Output Enable Access Time Symbol tCYC tCD tOE 200Mhz 5.0 3.0 3.0 166Mhz 6.0 3.5 3.5 133Mhz 7.5 4.0 4.0 Units ns ns ns GENERAL DESCRIPTION ASI’s AS5SP256K36DQ is a 9.0Mb High Performance Synchronous Pipeline Burst SRAM, available in multiple temperature screening levels, fabricated using High Performance CMOS technology and is organized as a 256K x 36. It integrates address and control registers, a two (2) bit burst address counter supporting four (4) double-word transfers. Writes are internally self-timed and synchronous to the rising edge of clock. ASI’s AS5SP256K36DQ includes advanced control options including Global Write, Byte Write as well as an Asynchronous Output enable. Burst Cycle controls are handled by three (3) input pins, ADV\, ADSP\ and ADSC\. Burst operation can be initiated with either the Address Strobe Processor (ADSP\) or Address Strobe controller (ADSC\) inputs. Subsequent burst addresses are generated internally in the system’s burst sequence control block and are controlled by Address Advance (ADV\) control input. Austin Semiconductor, Inc. reserves the right to change products or specifications without notice. BLOCK DIAGRAM OE\ ZZ CLK CE1\ CE2 CE3\ BWE\ BWx\ GW\ ADV\ ADSC\ ADSP\ MODE A0-Ax BURST CNTL. Address Registers Row Decode Column Decode CONTROL BLOCK I/O Gating and Control Memory Array x36 SBP ❑ Synchronous Pipeline Burst ❋ Two (2) cycle load ❋ One (1) cycle de-select ❋ One (1) cycle latency on Mode change Output Register Output Driver DQx, DQPx Input Register AS5SP256K36DQ Rev. 1.8 07/09 1 VDD NC* A A A A A A A A 50 Austin Semiconductor, Inc. PIN DESCRIPTION / ASSIGNMENT TABLE Signal Name Clock Address Address Symbol CLK A0, A1 A Type Input Input Input(s) Pin 89 COTS COTS PEM CO SSRAM AS5SP256K36DQ Chip Enable Chip Enable Global Write Enable Byte Enables Byte Write Enable Output Enable Address Strobe Controller CE1\, CE3\ CE2 GW\ BWa\, BWb\, BWc\, BWd\ BWE\ OE\ ADSC\ Input Input Input Input Input Input Input Description This input captures all synchronous inputs to the device as well as synchronizes the burst control functions. 37, 36 Low order, Synchronous Address Inputs and Burst counter address inputs 35, 34, 33, 32, 31, 100, Synchronous Address Inputs 99, 82, 81, 44, 45, 46, 47, 48, 49, 50, 43 98, 92 Active Low True Chip Enables 97 Active High True Chip Enable 88 Active Low True Global Write enable. Write to all bits 93, 94, 95, 96 Active Low True Byte Write enables. Write to byte segments 87 86 85 Active Low True Byte Write Function enable Active Low True Asynchronous Output enable Address Strobe from Controller. When asserted LOW, Address is captured in the address registers and A0-A1 are loaded into the Bur When ADSP\ and ADSC are both asserted, only ADSP is recognized Address Strobe from Processor. When asserted LOW, Address is captured in the Address registers, A0-A1 is registered in the burst counter. When both ADSP\ and ADSC\ or both asserted, only ADSP\ is recognized. ADSP\ is ignored when CE1\ is HIGH Advance input Address. When asserted LOW, address in burst counter is incremented. Asynchronous, non-time critical Power-down Input control. Places the chip into an ultra low power mode, with data preserved. Bidirectional I/O Parity lines. As inputs they reach the memory array via data register, that is triggered on the rising edge of clock. As an output, the line delivers the valid data stored in the array via an output register and output driver. The data delievered is from the previous clock period of the READ cycle. Bidirectional I/O Parity lines. As inputs they reach the memo array via data register, that is triggered on the rising edge of clock. As an output, the line delivers the valid data stored in the array via an output register and output driver. The data delievered is from the previous clock period of the READ cycle. Interleaved or Linear Burst mode control Core Power Supply Core Power Supply Ground Isolated Input/Output Buffer Supply Address Strobe from Processor ADSP\ Input 84 Address Advance Power-Down Data Parity Input/Outputs ADV\ ZZ DQPa, DQPb DQPc, DQPd Input Input Input/ Output 83 64 51, 80, 1, 30 Data Input/Outputs DQa, DQb, DQc Input/ DQd Output Burst Mode Power Supply [Core] Ground [Core] Power Supply I/O I/O Ground No Connection(s) MODE VDD VSS VDDQ VSSQ NC Input Supply Supply Supply Supply NA 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 31 91, 15, 41, 65 90, 17, 40, 67 4, 11, 20, 27, 54, 61, 70, 77 5, 10, 21, 26, 55, 60, Isolated Input/Output Buffer Ground 71, 76 14, 16, 38, 39, 65 No connections to internal silicon LOGIC BLOCK DIAGRAM A0, A1, Ax MODE ADV\ CLK ADDRESS REGISTER 2 A0, A1 Burst Counter Q1 and CLR Logic Q0 ADSC\ ADSP\ BWd\ Byte Write Register DQd, DQPd Byte Write Register DQc, DQPc Byte Write Register DQb, DQPb Byte Write Register DQa, DQPa Enable Register Pipeline Enable Byte Write Driver DQd, DQPd Byte Write Driver DQc, DQPc Byte Write Driver DQb, DQPb Byte Write Driver DQa, DQPa Input Registers Memory Array Sense Amps Output Registers Output Buffers DQx, DQPx BWc\ BWb\ BWa\ BWE\ GW\ CE1\ CE2 CE3\ OE\ ZZ Sleep Control AS5SP256K36DQ Rev. 1.8 07/09 Austin Semiconductor, Inc. reserves the right to change products or specifications without notice. 2 Austin Semiconductor, Inc. FUNCTIONAL DESCRIPTION COTS COTS PEM CO SSRAM AS5SP256K36DQ Consecutive single cycle READS are supported. Once the Austin Semiconductor’s AS5SP256K36DQ Synchronous READ operation has been completed and deselected by use of SRAM is manufactured to support today’s High Performance the Chip Enable(s) and either ADSP\ or ADSC\, its outputs will platforms utilizing the Industries leading Processor elements tri-state immediately. including those of Intel and Motorola. The AS5SP256K36DQ supports Synchronous SRAM READ and WRITE operations A Single ADSP\ controlled WRITE operation is initiated when as well as Synchronous Burst READ/WRITE operations. All both of the following conditions are satisfied at the time of inputs with the exception of OE\, MODE and ZZ are Clock (CLK) HIGH: [1] ADSP\ is asserted LOW, and [2] Chip synchronous in nature and sampled and registered on the rising Enable(s) are asserted ACTIVE. The address presented to the edge of the devices input clock (CLK). The type, start and the address bus is registered and loaded on CLK HIGH, then duration of Burst Mode operations is controlled by MODE, presented to the core array. The WRITE controls Global Write, ADSC\, ADSP\ and ADV\ as well as the Chip Enable pins CE1\, and Byte Write Enable (GW\, BWE\) as well as the individual CE2, and CE3\. All synchronous accesses including the Burst Byte Writes (BWa\, BWb\, BWc\, and BWd\) and ADV\ are accesses are enabled via the use of the multiple enable pins ignored on the first machine cycle. ADSP\ triggered WRITE and wait state insertion is supported and controlled via the use accesses require two (2) machine cycles to complete. If Global Write is asserted LOW on the second Clock (CLK) rise, the of the Advance control (ADV\). data presented to the array via the Data bus will be written into The ASI AS5SP256K36DQ supports both Interleaved as well the array at the corresponding address location specified by as Linear Burst modes therefore making it an architectural fit for the Address bus. If GW\ is HIGH (inactive) then BWE\ and one either the Intel or Motorola CISC processor elements available or more of the Byte Write controls (BWa\, BWb\, BWc\ and BWd\) controls the write operation. All WRITES that are on the Market today. initiated in this device are internally self timed. The AS5SP256K36DQ supports Byte WRITE operations and enters this functional mode with the Byte Write Enable (BWE\) and the Byte Write Select pin(s) (BWa\, BWb\, BWc\, BWd\). Global Writes are supported via the Global Write Enable (GW\) and Global Write Enable will override the Byte Write inputs and will perform a Write to all Data I/Os. The AS5SP256K36DQ provides ease of producing very dense arrays via the multiple Chip Enable input pins and Tri-state outputs. Single Cycle Access Operations A Single READ operation is initiated when all of the following conditions are satisfied at the time of Clock (CLK) HIGH: [1] ADSP\ or ADSC\ is asserted LOW, [2] Chip Enables are all asserted active, and [3] the WRITE signals (GW\, BWE\) are in their FALSE state (HIGH). ADSP\ is ignored if CE1\ is HIGH. The address presented to the Address inputs is stored within the Address Registers and Address Counter/Advancement Logic and then passed or presented to the array core. The corresponding data of the addressed location is propagated to the Output Registers and passed to the data bus on the next rising clock via the Output Buffers. The time at which the data is presented to the Data bus is as specified by either the Clock to Data valid specification or the Output Enable to Data Valid spec for the device speed grade chosen. The only exception occurs when the device is recovering from a deselected to select state where its outputs are tristated in the first machine cycle and controlled by its Output Enable (OE\) on following cycle. AS5SP256K36DQ Rev. 1.8 07/09 A Single ADSC\ controlled WRITE operation is initiated when the following conditions are satisfied: [1] ADSC\ is asserted LOW, [2] ADSP\ is de-asserted (HIGH), [3] Chip Enable(s) are asserted (TRUE or Active), and [4] the appropriate combination of the WRITE inputs (GW\, BWE\, BWx\) are asserted (ACTIVE). Thus completing the WRITE to the desired Byte(s) or the complete data-path. ADSC\ triggered WRITE accesses require a single clock (CLK) machine cycle to complete. The address presented to the input Address bus pins at time of clock HIGH will be the location that the WRITE occurs. The ADV\ pin is ignored during this cycle, and the data WRITTEN to the array will either be a BYTE WRITE or a GLOBAL WRITE depending on the use of the WRITE control functions GW\ and BWE\ as well as the individual BYTE CONTOLS (BWx\). Deep Power-Down Mode (SLEEP) The AS5SP256K36DQ has a Deep Power-Down mode and is controlled by the ZZ pin. The ZZ pin is an Asynchronous input and asserting this pin places the SSRAM in a deep powerdown mode (SLEEP). While in this mode, Data integrity is guaranteed. For the device to be placed successfully into this operational mode the device must be deselected and the Chip Enables, ADSP\ and ADSC\ remain inactive for the duration of tZZREC after the ZZ input returns LOW. Use of this deep power-down mode conserves power and is very useful in multiple memory page designs where the mode recovery time can be hidden. Austin Semiconductor, Inc. reserves the right to change products or specifications without notice. 3 Austin Semiconductor, Inc. SYNCHRONOUS TRUTH TABLES CE1\ H L L L L L L L X H X H X H X H Notes: 1. X = Don’t Care 2. WT= WRITE operation in WRITE TABLE, RD= READ operation in WRITE TABLE COTS COTS PEM CO SSRAM AS5SP256K36DQ Operation Not Selected Not Selected Not Selected Not Selected Not Selected Begin Burst, READ Begin Burst, WRITE Begin Burst, READ Continue Burst, READ Continue Burst, READ Continue Burst, WRITE Continue Burst, WRITE Suspend Burst, READ Suspend Burst, READ Suspend Burst, WRITE Suspend Burst, WRITE CE2 X L X L X H H H X X X X X X X X CE3\ X X H X H L L L X X X X X X X X ADSP\ X L L H H L H H H X H X H X H X ADSC\ L X X L L X L L H H H H H H H H ADV\ X X X X X X X X L L L L H H H H WT / RD X X X X X X WT RD RD RD WT WT RD RD WT WT CLK Address Accessed NA NA NA NA NA External Address External Address External Address Next Address Next Address Next Address Next Address Current Address Current Address Current Address Current Address BURST SEQUENCE TABLES Burst Control Pin [MODE] First Address State HIGH Case 1 A1 0 0 1 1 A0 Interleaved Burst Case 2 A1 A0 0 0 1 0 0 1 1 1 Linear Burst Case 2 A1 A0 0 1 1 0 Case 3 A1 1 0 1 0 1 1 0 0 A0 0 1 0 1 A1 1 1 0 0 Case 4 A0 1 0 1 0 CAPACITANCE Parameter Input Capacitance Input/Output Capacitance Clock Input Capacitance Symbol CI CIO CCLK Max. 5.0 5.0 5.0 Units pF pF pF Fourth Address Burst Control Pin [MODE] First Address State LOW Case 1 A1 0 0 1 1 A0 0 1 0 1 Case 3 A1 1 0 1 0 1 1 0 0 A0 0 1 0 1 A1 Case 4 A0 1 0 0 1 1 0 1 0 ASYNCHRONOUS TRUTH TABLE Operation Power-Down (SLEEP) READ WRITE De-Selected ZZ H L L L L OE\ X L H X X I/O Status High-Z DQ High-Z Din, High-Z High-Z Fourth Address WRITE TABLE GW\ H H H H H H L BW\ H L L L L L X BWa\ X H L H H L X BWb\ X H H L H L X BWc\ X H H H L L X BWd\ X H H H L L X Operation READ READ WRITE Byte [A] WRITE Byte [B] WRITE Byte [C], [D] WRITE ALL Bytes WRITE ALL Bytes AC TEST LOADS Output Zo=50 ohm Diagram [A] 30 pF Vt= 1.50v for 3.3v VDDQ Vt= 1.25v for 2.5v VDDQ Rt = 50 ohm ABSOLUTE MAXIMUM RATINGS Absolute Maximum Ratings Parameter Symbol Min. -0.3 Voltage on VDD Pin VDD Voltage on VDDQ Pins VDDQ VDD Voltage on Input Pins VIN -0.3 Voltage on I/O Pins VIO -0.3 Power Dissipation PD Storage Temperature tSTG -65 Operating Temperatures /CT 0 [Screening Levels] /IT -40 /ET -40 /XT -55 Max. 4.6 VDD VDD+0.3 VDDQ+0.3 1.6 150 70 85 105 125 Units V V V V W C C C C C Vt= Termination Voltage Rt= Termination Resistor R= 317 ohm@3.3v R= 1667 ohm@2.5v 3.3/2.5v 5 pF R= 351 ohm@3.3v R= 1538 ohm@2.5v Diagram [B] Output *Stress greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions greater than those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum conditions for any duration or segment of time may affect device reliability. AS5SP256K36DQ Rev. 1.8 07/09 Austin Semiconductor, Inc. reserves the right to change products or specifications without notice. 4 Austin Semiconductor, Inc. DC Electrical Characteristics (VDD=3.3v -5%/+10%), TA= Min. and Max temperatures of Screening level chosen) Symbol VDD VDDQ VoH VoL VIH VIL IIL IZZL IOL IDD Parameter Power Supply Voltage I/O Supply Voltage Output High Voltage Output Low Voltage Input High Voltage Input Low Voltage Test Conditions COTS COTS PEM CO SSRAM AS5SP256K36DQ VDD=Min., IOH=-4mA VDD=Min., IOH=-1mA VDD=Min., IOL=8mA VDD=Min., IOL=1mA 3.3v 2.5v 3.3v 2.5v 3.3v 2.5v 3.3v 2.5v Min 3.135 2.375 2.4 2 Max 3.630 VDD ISB1 ISB2 ISB3 ISB4 Input Leakage (except ZZ)&Mode VDD=Max., VIN=VSS to VDD Input Leakage, ZZ pin & mode Output Disabled, VOUT=VSSQ to VDDQ Output Leakage VDD=Max., f=Max., 5.0ns Cycle, 200 Mhz Operating Current IOH=0mA 6.0ns Cycle, 166 Mhz 7.5ns Cycle, 133 Mhz Max. VDD, Device De-Selected, Automatic CE. Power-down Current -TTL inputs VIN>/=VIH or VIN/=VIH or VIN