White Electronic Designs2x512Kx8 DUALITHIC™ SRAM
FEATURES
■
Access Times 17, 20, 25, 35, 45, 55ns■ 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■ 3.3V Power Supply■ Low Power CMOS■ ■
TTL Compatible Inputs and OutputsOutput Enable Internally tied to GND.
A18A16A14A12A7A6A5A4A3A2A1A0I/O0I/O1I/O2GNDWS1M8V-XCX
ADVANCED*
PIN CONFIGURATION FOR WS1M8V-XCX32 DIPTOP VIEW1234567891011121314151632313029282726252423222120191817VCCA15A17WE#A13A8A9A11CS2#A10CS1#I/O7I/O6I/O5I/O4I/O3* This product is under development, is not qualifi ed or characterized and is subject to change or cancellation without notice.
PIN DESCRIPTIONA0-18I/O0-7CS#1-2WE#VCCGNDAddress InputsData Input/OutputChip SelectsWrite Enable+3.3V Power SupplyGroundBLOCK DIAGRAMI/O0-7WE#A0-18512K x 8512K x 8CS1#(1)CS2#(1)NOTE:1. CS#1 and CS#2 are used to select the lower and upper 512Kx8 of the device. CS#1 and CS#2 must not be enabled at the same time.White Electronic Designs Corp. reserves the right to change products or specifi cations without notice.October, 2002Rev. 2
1
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
元器件交易网www.cecb2b.com
White Electronic DesignsABSOLUTE MAXIMUM RATINGS
Parameter
Operating TemperatureStorage Temperature
Signal Voltage Relative to GNDJunction TemperatureSupply Voltage
SymbolTATSTGVGTJVCC
Min-55-65-0.5-0.5
Max+125+150+4.61505.5
Unit°C°CV°CV
CS#HLL
WE#XHL
ModeStandbyReadWrite
WS1M8V-XCX
ADVANCED*
TRUTH TABLE
Data I/OHigh ZData OutData In
PowerStandbyActiveActive
NOTE: OE# is internally tied to GND.
RECOMMENDED OPERATING CONDITIONS
ParameterSupply VoltageInput High VoltageInput Low VoltageOperating Temp. (Mil.)
SymbolVCCVIHVILTA
Min3.02.2-0.3-55
Max3.6VCC + 0.3+0.8+125
UnitVVV°C
Parameter
Input capacitanceOutput capicitance
CAPACITANCE
TA = +25°C
SymbolCINCOUT
ConditionVIN = 0V, f = 1.0MHzVOUT = 0V, f = 1.0MHz
Max2828
UnitpFpF
This parameter is guaranteed by design but not tested.
DC CHARACTERISTICS
VCC = 3.3V, GND = 0V, -55°C ≤ TA ≤ +125°C)
Parameter
Input Leakage CurrentOutput Leakage CurrentOperating Supply Current Standby CurrentOutput Low VoltageOutput High Voltage
NOTE:
DC test conditions: VIH = VCC -0.3V , VIL = 0.3V1. OE# is internally tied to GND.
SymILIILO1ICC1ISB1VOLVOHConditions
VCC = 3.6, VIN = GND to VCCCS# = VIH, VOUT = GND to VCCCS# = VIL, f = 5MHz, VCC = 3.6CS# = VIH, f = 5MHz, VCC = 3.6IOL = 8.0mAIOH = -4.0mA
Min
Max1010160300.4
2.4
UnitsµAµAmAmAVV
White Electronic Designs Corp. reserves the right to change products or specifi cations without notice.October, 2002Rev. 2
2
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
元器件交易网www.cecb2b.com
White Electronic DesignsAC CHARACTERISTICS
VCC = 3.3V, GND = 0V, -55°C ≤ TA ≤ +125°C)
Parameter
Read CycleRead Cycle TimeAddress Access Time
Output Hold from Address ChangeChip Select Access Time
Chip Select to Output in Low ZChip Disable to Output in High Z
SymboltRCtAAtOHtACStCLZ1tCHZ1
Min170
172
9
2
10
-17Max17
0
20
2
12
Min20
-20Max20
0
25
4
15
Min25
-25Max25
0
35
4
Min35
-35Max35
0Min45
WS1M8V-XCX
ADVANCED*
-45Max45
0
45
4
20
Min55
-55Max555520
Unitsnsnsnsnsnsns
NOTES:
1. This parameter is guaranteed by design but not tested.2. OE# is internally tied to GND.
AC CHARACTERISTICS
VCC = 3.3V, GND = 0V, -55°C ≤ TA ≤ +125°C)
Parameter
Write CycleWrite Cycle Time
Chip Select to End of WriteAddress Valid to End of WriteData Valid to End of WriteWrite Pulse WidthAddress Setup TimeAddress Hold Time
Output Active from End of WriteWrite Enable to Output in High ZData Hold Time
SymboltWCtCWtAWtDWtWPtAStAHtOW1tWHZ1tDH
Min 1714149140020-17Max
Min20141410140030-20Max
Min25151510150040-25Max
Min35252520250040-35Max
Min45353525350550-45Max
Min55505025400550-55Max
nsnsnsnsnsnsnsnsnsnsUnits
9910151525
NOTES:
1. This parameter is guaranteed by design but not tested.
AC TEST CIRCUITIOLCurrent SourceAC TEST CONDITIONSParameterInput Pulse LevelsInput Rise and FallInput and Output Reference LevelOutput Timing Reference LevelV Z≈ 1.5V(Bipolar Supply)TypVIL = 0, VIH = 3.051.51.5UnitVnsVVD.U.T.C = 50 pfeffIOHCurrent SourceNotes:VZ is programmable from -2V to +7V.IOL & IOH programmable from 0 to 16mA.Tester Impedance Z0 = 75 Ω.VZ is typically the midpoint of VOH and VOL.IOL & IOH are adjusted to simulate a typical resistive load cir cuit.ATE tester includes jig capacitance.White Electronic Designs Corp. reserves the right to change products or specifi cations without notice.October, 2002Rev. 2
3
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
元器件交易网www.cecb2b.com
White Electronic DesignsTIMING WAVEFORM – READ CYCLE
WS1M8V-XCX
ADVANCED*
tRCADDRESStRCADDRESStAACS#tAAtOHDATA I/OPREVIOUS DATA VALIDDATA VALIDtACStCLZOE# tCHZREAD CYCLE 1 (CS# = OE# = VIL, WE# = VIH)tOEtOLZDATA I/OHIGH IMPEDANCEtOHZDATA VALIDREAD CYCLE 2 (WE# = VIH)NOTE: OE# is internally tied to the GND.WRITE CYCLE – WE# CON TROLLED tWCADDRESStAWtCWCS#tASWE#tWHZDATA I/OtDWtWPtOWtDHtAHDATA VALIDWRITE CYCLE 1, WE# CONTROLLEDWRITE CYCLE – CS# CONTROLLEDtWCADDRESStASCS#tAWtCWtAHtWPWE#tDWDATA I/ODATA VALIDtDHWRITE CYCLE 2, CS# CONTROLLEDWhite Electronic Designs Corp. reserves the right to change products or specifi cations without notice.October, 2002
Rev. 2
4
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
元器件交易网www.cecb2b.com
White Electronic DesignsWS1M8V-XCX
ADVANCED*
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 IDENTIFIER0.84 (0.033) ± 0.4 (0.014)ALL LINEAR DIMENSIONS ARE MILLIMETERS AND PARENTHETICALLY IN INCHESORDERING INFORMATIONW S 1M8 V - XXX C X XLEAD FINISH:Blank = Gold plated leads A = Solder dip leadsDEVICE GRADE: M = Military Screened -55°C to +125°C I = Industrial -40°C to +85°C C = Commercial 0°C to +70°CPACKAGE: C = 32 pin Ceramic 0.600\" DIP (Package 300)ACCESS TIME (ns)LOW VOLTAGE SUPPLY 3.3V ±10%ORGANIZATION, two banks of 512K x 8SRAMWHITE ELECTRONIC DESIGNS CORP.White Electronic Designs Corp. reserves the right to change products or specifi cations without notice.October, 2002Rev. 2
5
White Electronic Designs Corporation • (602) 437-1520 • www.wedc.com
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