64K × 8 HIGH SPEED CMOS STATIC RAM
GENERAL DESCRIPTION
The W24512A is a high speed, low power CMOS static RAM organized as 65536 × 8 bits thatoperates on a single 5-volt power supply. This device is manufactured using Winbond's highperformance CMOS technology.
FEATURES
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High speed access time: 25 nS (max.)Low power consumption:−Active: 800 mW (max.)Single +5V power supplyFully static operation
•••
All inputs and outputs directly TTL compatibleThree-state outputs
Available packages: 32-pin 300 mil SOJ, 450mil SOP, and standard type one TSOP (8 mm × 20 mm)
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PIN CONFIGURATIONSBLOCK DIAGRAM
VDDNCNCA14A12A7A6A5A4A3A2A1A0I/O1I/O2I/O3VSS1234567891011121314151632313029282726252423222120191817VDDA15CS2WEA13A8A9A11OEA10CS1I/O8I/O7I/O6I/O5I/O4VSSA0..A15DECODERCOREARRAYCS2CS1OEWECONTROLDATA I/OI/O1..I/O8PIN DESCRIPTION
SYMBOLA0−A1532313029282726252423222120191817OEA10CS1I/O8I/O7I/O6I/O5I/O4VSSI/O3I/O2I/O1A0A1A2A3DESCRIPTIONAddress InputsData Inputs/OutputsChip Select InputsWrite Enable InputOutput Enable InputPower SupplyGroundNo ConnectionA11A9A8A13WECS2A15VDDNCNCA14A12A7A6A5A412345678910111213141516I/O1−I/O8CS1, CS2WEOEVDDVSSNC32-pinTSOP- 1 -
Publication Release Date: April 1997
Revision A3
W24512A
TRUTH TABLECS1HXLLLCS2XLHHHOEXXHLXWEXXHHLMODENot SelectedNot SelectedOutput DisableReadWriteI/O1−I/O8High ZHigh ZHigh ZData OutData InVDD CURRENTISB, ISB1ISB, ISB1IDDIDDIDDDC CHARACTERISTICS
Absolute Maximum Ratings
PARAMETER
Supply Voltage to VSS PotentialInput/Output to VSS PotentialAllowable Power DissipationStorage TemperatureOperating Temperature
RATING-0.5 to +7.0-0.5 to VDD +0.5
1.0-65 to +1500 to +70
UNITVVW°C°C
Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliability of thedevice.
Operating Characteristics
(VDD = 5V ±10%, VSS = 0V, TA = 0 to 70° C)PARAMETERInput Low VoltageInput High VoltageInput Leakage CurrentOutput LeakageCurrentSYM.VILVIHILIILOTEST CONDITIONS--VIN = VSS to VDDVI/O = VSS to VDDCS1 = VIH (min.) orCS2 = VIL (max.) orOE = VIH (min.) orWE = VIL (max.)IOL = +8.0 mAIOH = -4.0 mACS1 = VIL (max.),CS2 = VIH (min.)I/O = 0mA, Cycle = minDuty = 100%CS1 = VIH (min.) orCS2 = VIL (max.)Cycle = min, Duty = 100%CS1 ≥ VDD -0.2V orCS2 ≤ 0.2VMIN.-0.5+2.2-10-10TYP.----MAX.+0.8VDD +0.5+10+10UNITVVµAµAOutput Low VoltageOutput High VoltageOperating PowerSupply CurrentVOLVOHIDD-2.4----0.4-160VVmAStandby PowerSupply CurrentISB--30mAISB1--10mANote: Typical characteristics are at VDD = 5V, TA = 25° C.
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W24512A
CAPACITANCE
(VDD = 5V, TA = 25° C, f = 1 MHz)
PARAMETER
Input CapacitanceInput/Output Capacitance
SYM.CINCI/O
CONDITIONSVIN = 0VVOUT = 0V
MAX.810
UNITpFpF
Note: These parameters are sampled but not 100% tested.
AC CHARACTERISTICS
AC Test Conditions
PARAMETER
Input Pulse LevelsInput Rise and Fall Times
Input and Output Timing Reference LevelOutput Load
0V to 3V5 nS1.5V
CL = 30 pF, IOH/IOL = -4 mA/8 mA
CONDITIONS
AC Test Loads and Waveform
R1 480 ohmR1 480 ohm5VOUTPUT30 pFIncludingJig andScope5VOUTPUTR2255 ohm5 pFIncludingJig andScopeR2255 ohm(For T CLZ1,TCLZ2,TCHZ1,TCHZ2,TOHZ,TWHZ,TOW)OLZ,T3.0V90%10%5 nS10%90%0V5 nS- 3 -
Publication Release Date: April 1997
Revision A3
W24512A
AC Characteristics,continued
(VDD = 5V ±10%, VSS = 0V, TA = 0 to 70° C)
Read CyclePARAMETERRead Cycle TimeAddress Access TimeChip Select Access TimeOutput Enable to Output ValidChip Selection to Output in Low ZOutput Enable to Output in Low ZChip Deselection to Output in High ZOutput Disable to Output in High ZOutput Hold from Address Change* These parameters are sampled but not 100% tested.
CS1CS2CS1CS2CS1CS2SYM.TRCTAATACS1TACS2TAOETCLZ1*TCLZ2*TOLZ*TCHZ1*TCHZ2*TOHZ*TOHW24512A-25MIN.25----330---3MAX.-25252512---121212-nSnSnSnSnSnSnSnSnSnSnSnSUNITWrite CyclePARAMETERWrite Cycle TimeChip Selection to End of WriteAddress Valid to End of WriteAddress Setup TimeWrite Pulse WidthWrite Recovery TimeCS1, WECS2Data Valid to End of WriteData Hold from End of WriteWrite to Output in High ZOutput Disable to Output in High ZOutput Active from End of Write* These parameters are sampled but not 100% tested.- 4 -CS1CS2SYM.TWCTCW1TCW2TAWTASTWPTWR1TWR2TDWTDHTWHZ*TOHZ*TOWW24512A-25MIN.2518181801500120--0MAX.----------1212-nSnSnSnSnSnSnSnSnSnSnSnSnSUNITW24512A
TIMING WAVEFORMS
Read Cycle 1
(Address Controlled)TRCAddressTOHDOUTTAATOHRead Cycle 2
(Chip Select Controlled)CS1TACS1CS2TACS2TCHZ2TCHZ1TCLZ1DOUTCLZ2Read Cycle 3
(Output Enable Controlled)
TRCAddressTAAOETAOETOLZCS1TACS1TCLZ1CS2TACS2TCLZ2DOUTTCHZ2TOHZTCHZ1TOH- 5 -
Publication Release Date: April 1997
Revision A3
W24512A
Timing Waveforms, continued
Write Cycle 1
(OE Clock)TWCAddressTWR1OETCW1CS1CS2TAWWETASTOHZDOUT(1, 4)TCW2TWR2TWPTDWDINTDHWrite Cycle 2(OE = VIL Fixed)TWCAddressTCW1CS1TWR1CS2TAWWETASTCW2TWR2TWPTWHZ (1, 4)TOHTOWTDH(2)(3)DOUTTDWDINNotes:1. During this period, I/O pins are in the output state, so input signals of opposite phase to the outputs should not be applied.2. The data output from DOUT are the same as the data written to DIN during the write cycle.3. DOUT provides the read data for the next address.
4. Transition is measured ±500 mV from steady state with CL = 5 pF. This parameter is guaranteed but not 100% tested.
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W24512A
ORDERING INFORMATION
PART NO.
ACCESS TIME
(nS)
252525
OPERATINGCURRENTMAX. (mA)
160160160
STANDBYCURRENTMAX. (mA)
101010
PACKAGE
W24512AS-25W24512AT-25W24512AJ-25
Notes:
450 mil SOP
Standard type one TSOP300 mil SOJ
1. Winbond reserves the right to make changes to its products without prior notice.
2. Purchasers are responsible for performing appropriate quality assurance testing on products intended for use in applications where personal injury might occur as a consequence of product failure.
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Publication Release Date: April 1997
Revision A3
W24512A
PACKAGE DIMENSIONS
32-pin SO Wide Body
Symbol3217Dimension in InchesDimension in mmMin.0.0040.1010.0140.006Nom.Max.0.118Min.0.10Nom.Max.3.00e1EHELDetail F1b16AA1A2bcDEeHELLESyθNotes:0.1060.0160.0080.8050.1110.0200.0120.8170.4500.0560.5560.0390.0630.0360.0042.570.360.152.690.410.2020.452.820.510.3120.7511.431.4214.380.991.600.910.100.4400.0440.5460.0230.0470.4450.0500.5560.0310.05511.181.1213.870.581.1911.301.2714.120.791.40010010De1cA2A1SyeALE1. Dimension D Max. & S include mold flash or tie bar burrs. 2. Dimension b does not include dambar protrusion/intrusion.3. Dimension D & E include mold mismatch. and are determined at the mold parting line.4. Controlling dimension: Inches.5. General appearance spec should be based on final visual inspection spec.Seating PlaneSee Detail F32-pin SOJDimension in InchesDimension in mmMin.__0.0200.0950.0260.0160.0080.8150.2950.0440.2470.3250.080____03217SymbolAA1A2EHeNom.Max.____0.1000.0280.0180.0100.8250.3000.0500.2670.335________0.140__0.1050.0320.0220.0140.8350.3050.0560.2870.345__0.0450.00410Min.__0.5082.4130.6600.4060.20320.7017.4931.1186.2748.2552.032____0°Nom.Max.____2.5400.7110.4570.25420.9557.6201.2706.7828.509________3.556__2.6670.8130.5590.35621.2097.7471.4227.2908.763__1.1430.10210°BbcDEee1116HeLSYθDA2AcLSBbe1eA1θSeating PlaneY- 8 -
W24512A
Package Dimensions, continued
32-pin Standard Type One TSOPHDSymbolDimension in InchesMin.Nom.Max.0.0470.0060.0410.0090.007Dimension in mmMin.Nom.Max.1.200.151.050.230.1718.508.1020.20DcAA1A2__0.0020.0370.007____0.0390.008__0.05 0.950.170.12____1.000.200.15MeEbcDEHDeLL1AA20.0050.0060.7200.3110.7800.7240.3150.787 0.0200.020 0.0310.10(0.004)0.72818.3018.400.3197.908.0020.000.500.500.80b0.79519.80__0.016__0.024__0.40__0.60__0.0001__0.0045__0.001__0.105Y__3__3θLL1A1θYControlling dimension: Millimeter- 9 -
Publication Release Date: April 1997
Revision A3
W24512A
HeadquartersWinbond Electronics (H.K.) Ltd.Winbond Electronics North America Corp.
Rm. 803, World Trade Square, Tower II,Winbond Memory Lab.No. 4, Creation Rd. III,
123 Hoi Bun Rd., Kwun Tong,Science-Based Industrial Park,Winbond Microelectronics Corp.Kowloon, Hong KongHsinchu, TaiwanWinbond Systems Lab.TEL: 852-27513100TEL: 886-3-5770066
2727 N. First Street, San Jose,FAX: 852-27552064FAX: 886-3-5792647
CA 95134, U.S.A.http://www.winbond.com.tw/
TEL: 1-408-9436666Voice & Fax-on-demand: 886-2-7197006
FAX: 1-408-5441798
Taipei Office
11F, No. 115, Sec. 3, Min-Sheng East Rd.,Taipei, Taiwan
TEL: 886-2-7190505FAX: 886-2-7197502
Note: All data and specifications are subject to change without notice.
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