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| White Electronic Designs 2x512Kx8 DUALITHICTM SRAM FEATURES Access Times 70, 85, 100ns Evolutionary, Corner Power/Ground Pinout Packaging: * 32 pin, Hermetic Ceramic DIP (Package 300) Organized as two banks of 512Kx8 Commercial, Industrial and Military Temperature Ranges 5 Volt Power Supply Low Power CMOS TTL Compatible Inputs and Outputs Output Enable Internally tied to GND. WS1M8-XCX PRELIMINARY* * This product is under development, is not qualified or characterized and is subject to change without notice. Pin Configuration FOR WS1M8-XCX 32 DIP Pin Description A0-18 I/O0-7 CS1-2# WE# Address Inputs Data Input/Output Chip Selects Write Enable +5.0V Power Supply Ground Top View A18 A16 A14 A12 A7 A6 A5 A4 A3 A2 A1 A0 I/O0 I/O1 I/O2 GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 VCC A15 A17 WE# A13 A8 A9 A11 CS2# A10 CS1# I/O7 I/O6 I/O5 I/O4 I/O3 VCC GND Block Diagram I/O0-7 WE# A0-18 512K x 8 512K x 8 CS1# (1) CS2# (1) NOTE: 1. CS1# and CS2# are used to select the lower and upper 512Kx8 of the device. CS1# and CS2# must not be enabled at the same time. White Electronic Designs Corp. reserves the right to change products or specifications without notice. November 2002 Rev. 2 1 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com White Electronic Designs ABSOLUTE MAXIMUM RATINGS Parameter Operating Temperature Storage Temperature Signal Voltage Relative to GND Junction Temperature Supply Voltage Symbol TA TSTG VG TJ VCC Min -55 -65 -0.5 -0.5 Max +125 +150 VCC+0.5 150 7.0 Unit C C V C V CS# H L L WE# X H L Mode Standby Read Write WS1M8-XCX PRELIMINARY TRUTH TABLE Data I/O High Z Data Out Data In Power Standby Active Active RECOMMENDED OPERATING CONDITIONS Parameter Supply Voltage Input High Voltage Input Low Voltage Opertating Temp. (MIL) Symbol VCC VIH VIL TA Min 4.5 2.2 -0.3 -55 Max 5.5 VCC + 0.3 +0.8 +125 Unit V V V C Parameter Input capacitance Output capacitance CAPACITANCE TA = +25C Symbol Conditions Max Unit VIN = 0V, f = 1.0 MHz 28 pF CIN COUT VOUT = 0V, f = 1.0 MHz 28 pF This parameter is guaranteed by design but not tested. DC CHARACTERISTICS VCC = 5.0V, VSS = 0V, -55C TA +125C Parameter Input Leakage Current Output Leakage Current Operating Supply Current Standby Current Output Low Voltage Output High Voltage NOTE: DC test conditions: VIH = VCC -0.3V, VIL = 0.3V 1. OE# is internally tied to GND. Sym ILI ILO1 ICC1 ISB1 VOL VOH Conditions VCC = 5.5, VIN = GND to VCC CS# = VIH, VOUT = GND to VCC CS# = VIL, f = 5MHz, VCC = 5.5 CS# = VIH, f = 5MHz, VCC = 5.5 IOL = 2.1mA IOH = -1.0mA Min Max 10 10 55 2 0.4 Units A A mA mA V V 2.4 DATA RETENTION CHARACTERISTICS -55C TA +125C Characteristic Data Retention Supply Voltage Data Retention Current Sym VDR ICCDR1 Conditions CS# VCC -0.2V VCC = 3V Min 2.0 Typ 150 Max 5.5 800* Units V A * Also available in Low Power version. Please call factory for informaion. White Electronic Designs Corp. reserves the right to change products or specifications without notice. November 2002 Rev. 2 2 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com White Electronic Designs AC CHARACTERISTICS VCC = 5.0V, GND = 0V, -55C TA +125C Parameter Read Cycle Read Cycle Time Address Access Time Output Hold from Address Change Chip Select Access Time Chip Select to Output in Low Z Chip Disable to Output in High Z Symbol tRC tAA tOH tACS tCLZ1 tCHZ1 Min 70 0 70 5 25 5 25 -70 Max 70 0 85 5 Min 85 -85 Max 85 0 Min 100 WS1M8-XCX PRELIMINARY -100 Max 100 100 25 Units ns ns ns ns ns ns 1. This parameter is guaranteed by design but not tested. AC CHARACTERISTICS VCC = 5.0V, GND = 0V, -55C TA +125C Parameter Write Cycle Write Cycle Time Chip Select to End of Write Address Valid to End of Write Data Valid to End of Write Write Pulse Width Address Setup Time Address Hold Time Output Active from End of Write Write Enable to Output in High Z Data Hold Time Symbol tWC tCW tAW tDW tWP tAS tAH tOW1 tWHZ1 tDH Min 70 60 60 30 50 0 5 5 0 -70 Max Min 85 75 75 30 50 0 5 5 0 -85 Max Min 100 80 80 40 60 0 5 5 0 -100 Max ns ns ns ns ns ns ns ns ns ns Units 25 25 35 1. This parameter is guaranteed by design but not tested. AC TEST CIRCUIT AC Test Conditions I OL Current Source D.U.T. C eff = 50 pf VZ 1.5V Parameter Input Pulse Levels Input Rise and Fall Input and Output Reference Level Output Timing Reference Level Typ VIL = 0, VIH = 3.0 5 1.5 1.5 Unit V ns V V (Bipolar Supply) I OH Current Source Notes: VZ is programmable from -2V to +7V. IOL & IOH programmable from 0 to 16mA. Tester Impedance Z0 = 75. VZ is typically the midpoint of VOH and VOL. IOL & IOH are adjusted to simulate a typical resistive load circuit. ATE tester includes jig capacitance. White Electronic Designs Corp. reserves the right to change products or specifications without notice. November 2002 Rev. 2 3 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com White Electronic Designs TIMING WAVEFORM - READ CYCLE tRC tRC ADDRESS WS1M8-XCX PRELIMINARY ADDRESS tAA tAA tOH CS# tACS DATA VALID tCHZ DATA I/O PREVIOUS DATA VALID tCLZ DATA I/O HIGH IMPEDANCE DATA VALID READ CYCLE 1 (CS# = VIL, WE# = VIH) READ CYCLE 2 (WE# = VIH) NOTE: OE# is internally tied to GND. WRITE CYCLE - WE# CONTROLLED tWC ADDRESS tAW tCW CS# tAH tAS WE# tWP tOW tWHZ tDW DATA VALID tDH DATA I/O WRITE CYCLE 1, WE# CONTROLLED WRITE CYCLE - CS# CONTROLLED tWC ADDRESS tAS CS# tAW tCW tAH tWP WE# tDW DATA I/O DATA VALID tDH WRITE CYCLE 2, CS# CONTROLLED White Electronic Designs Corp. reserves the right to change products or specifications without notice. November 2002 Rev. 2 4 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com White Electronic Designs WS1M8-XCX PRELIMINARY PACKAGE 300: 32 PIN, CERAMIC DIP, SINGLE CAVITY SIDE BRAZED 42.4 (1.670) 0.4 (0.016) 15.04 (0.592) 0.3 (0.012) 4.34 (0.171) 0.79 (0.031) PIN 1 IDENTIFIER 0.84 (0.033) 0.4 (0.014) ALL LINEAR DIMENSIONS ARE MILLIMETERS AND PARENTHETICALLY IN INCHES ORDERING INFORMATION W S 1M8 - XXX C X X LEAD FINISH: Blank = Gold plated leads A = Solder dip leads DEVICE GRADE: M = Military Screened I = Industrial C = Commercial -55C to +125C -40C to +85C 0C to +70C PACKAGE: C = Ceramic 0.600" DIP (Package 300) ACCESS TIME (ns) ORGANIZATION, two banks of 512K x 8 SRAM WHITE ELECTRONIC DESIGNS CORP. White Electronic Designs Corp. reserves the right to change products or specifications without notice. November 2002 Rev. 2 5 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com |
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