W24L257A ALO linbond Electronics Corp. 32K x 8 HIGH-SPEED CMOS STATIC RAM GENERAL DESCRIPTION The W24L257A is a high-speed, low-power CMOS static RAM organized as 32768 x 8 bits that operates on a single 3.3-volt power supply. This device is manufactured using Winbond's high performance CMOS technology. FEATURES High-speed access time: 12/15/20 nS (max.) All inputs and outputs directly TTL compatible Low-power consumption: Three-state outputs - Active: 200 mW (typ.) Available packages: 28-pin 300 mil SOJ, e Single +3.3V power supply skinny DIP and standard type one TSOP + Fully static operation (8 mm x 13.4 mm) PIN CONFIGURATION BLOCK DIAGRAM VOD -> As f110 a 23 Vbo VSS -> Al2 [2 27 {] we AT Tha 26 [] ai as C)4 25 [] AB as (15 24 [1 ag A4 C6 23 Att a3 (7 vepp 2 | OE A2(]}8 21 LL) ato Ait}o 2 [] cs Ao C1 10 19 [vos vor [} 44 18 [] vor voz {7} 42 17 [J vos vo3 [] 13 16 ) Os ves 14 3 Fw PIN DESCRIPTION SYMBOL DESCRIPTION oe cits mea Ato A0-A14 Address Inputs Ao 2. tos 01-08 | Data inputs/Outputs Ag 4 25 - VvO7 wae 26-pin 24 & 08 cs Chip Select Input Voo 7 TSOP 22 FF vO4 - Az cle 21 Mss WE Write Enable Input AT CJ} 10 19 F yo2 Ae | 12 1B EE uot OE Output Enable Input A4 113 46 [At aa 16 45> A2 Vop Power Supply Vss Ground Publication Release Date: December 1996 -/]- Revision A5W24L257A linbond Electronics Corp. TRUTH TABLE cs OE | WE MODE 101-08 Vop CURRENT H x xX Not Selected High Z ISB, 1SB1 L H H Output Disable High Z Ipp L L H Read Data Out Ipb L x L Write Data In iDD DC CHARACTERISTICS Absolute Maximum Ratings PARAMETER RATING UNIT Supply Voltage to Vss Potential -0.5 to +4.6 Vv Input/Output to Vss Potential -0.5 to Vob +0.5 Vv Allowable Power Dissipation 1.0 w Storage Temperature -65 to +150 C Operating Temperature 0 to +70 C Note: Exposure to conditions beyond those listed under Absolute Maximum Ratings may adversely affect the life and reliabilityof the device. Operating Characteristics (Von = 3.3V + 5%, Vss= OV, Ta = 0 to 70 C) PARAMETER SYM TEST CONDITIONS MIN | TYP| MAX. | UNIT Input Low Voltage VIL - O05] - +0.8 Vv Input High Voltage VIH - +2.0| - | Voo+0.3] V Input Leakage Current | IL! | VIN = Vss to Vop -10 | - +10 LA Output Leakage ILO | Vivo = Vss to Vop, CS = Vin(miny | 10. | - +10 pA Current or OE = Vin (min.) or WE = VIL (max. Output Low Voltage VoL | lol = +8.0 mA - - 0.4 Vv Output High Voltage VOH | loH = -4.0 mA 2.4 - - V Operating Power IDD | CS = Vi_(max), VO =0 mA 12 - - 150 mA Supply Current Cycle = min. 15 - - 120 mA Duty = 100% 20 - - 100 mA Standby Power ISB | CS = Vin (min), Cycle = min. - - 20 mA Supply Current Duty = 100% ISB1 | CS > Vpp -0.2V - | o- 200 HA Note: Typical characteristics are at \op = 3.3V, Ta = 28 C.W24L257A linbond Electronics Corp. CAPACITANCE (Voo = 3.3V, Ta = 28 C, f = 1 MHz) PARAMETER SYM. CONDITIONS MAX. UNIT Input Capacitance CIN VIN = OV 6 pF Input/Output Capacitance Cvo Vout = 0V 8 pF Note: These parameters are sampled but not 100% tested. AC CHARACTERISTICS AC Test Conditions PARAMETER CONDITIONS Input Pulse Levels OV to 3V Input Rise and Fall Times 3nS Input and Output Timing Reference Level 1.5V Output Load CL = 30 pF, lon/lot = -4 mA/8 MA AC Test Loads and Waveform R1 320 ohm R1 320 ohm 3.3V owv 3.3V nn OUTPUT o+~ OUTPUT + .20pF | Re L5pFo | Re 7 Including } 350 ohm | including | 350 ohm | Jig and Jig and = Scope = = Scope = (For Texz, Towz, Tonz, Touz, Twuz, Tow) 3.0V / 3nS 90% 10% ion. 4 3nS + 90% \ t Publication Release Date: December 1996 Revision A5W24L257A linbond Electronics Carp. AC Characteristics, continued (Voo = 3.3V + 5%, Vss = OV, Ta =O to 70 C) (1) Read Cycle PARAMETER SYM. | W24L257A-12 | W24L257A-15 | W24L257A-20 | UNIT MIN. | MAX. | MIN. | MAX. | MIN. | MAX. Read Cycle Time TRe 12 - 15 - 20 - ns Address Access Time TAA - 12 - 15 - 20 ns Chip Select Access Time TACS - 12 - 15 - 20 ns Output Enable to Output Valid TAOE - 6 - 8 - 10 ns Chip Selection to Output in Low Z Tou" 4 - 4 - 4 - ns Output Enable to Output in Low Z Touz* 0 - 0 - 0 - ns Chip Deselection to Output in High Z| Tcuz* - 6 - 7 - 10 ns Output Disable to Output in High Z TOHzZ* - 6 - 7 - 10 nS Output Hold from Address Change TOH 3 - 3 - 3 - ns These parameters are sampled but not 100% tested (2) Write Cycle PARAMETER SYM. | W24L257A-12 | W24L257A-15 | W24L257A-20 | UNIT MIN. | MAX. | MIN. | MAX. | MIN. | MAX. Write Cycle Time Two 12 - 16 - 20 - ns Chip Selection to End of Write Tow 10 - 13 - 17 - nS Address Valid to End of Write TAW 10 - 13 - 17 - ns Address Setup Time TAS 0 - 0 - 0 - ns Write Pulse Width Twp 10 - 10 - 12 - ns Write Recovery Time CS, WE Twr { - 1 - 1 - ns Data Valid to End of Write Tow 7 - 9 - 10 - ns Data Hold from End of Write TOH 0 - 0 - 0 - ns Write to Output in High Z TwH2* - 7 - 8 - 10 ns Output Disable to Output in High Z TOHZ* - 7 - 8 - 10 ns Output Active from End of Write Tow 0 - 0 - 0 - nS These parameters are sampled but not 100% testedW24L257A finbond Electronics Corp. TIMING WAVEFORMS Read Cycle 1 (Address Controlled) TRC | Address y x le TOH Te i Tou | Read Cycle 2 (Chip Select Controlled) = f 6 \AAANS ELLLLLLLLL -~ Tac nd Dout I~ Tow XX g Tenz 5 Read Cycle 3 (Output Enable Controiled) Address OouT Publication Release Date: December 1996 Revision ASW24L257A linbond Electronics Corp. Timing Waveforms, continued Write Cycle 1 (OE Clock) Address fe : | S N\\ANAKS OO AI LLL WE -{ TAS Twe af te =| CDSS SSS SSS? ZW22Z2L TLS ow =e AK KEKXKXK Write Cycle 2 (OE = Vit Fixed) je- Two tl address x S< Tew TWR_ s Wai LLTIZILZL bp TA WE eke \ \ \* af to TW drow (2) @) Dout 4 a Tow pla TDH - <xKXKXKX Notes: 1. During this period, VO pins are in the output state, so input signals of opposite phase to the outputs should not be applied. 2. The data output from Dour are the same as.the data written to Dn during the write cycle. 3. Dout provides the read data for the next address. 4. Transition is measured +500 mV from steady state with @ = 5 pF. This parameter is guaranteed but not 100% tested.W24L257A inbond Electronics Corp. ORDERING INFORMATION PART NO. ACCESS TIME | OPERATING STANDBY PACKAGE (nS) CURRENT CURRENT MAX. (mA) MAX. (LA) W24L257AK-12 12 150 200 300 mil Skinny W24L257AK-15 15 120 200 300 mil Skinny W24L257AK-20 20 100 200 300 mil Skinny W24L257AJ-12 12 150 200 300 mil SOJ | W24L257AJ-15 15 120 200 300 mil SOJ W24L257AJ-20 20 100 200 300 mil SOJ W24L257AQ-12 12 150 200 Standard type one TSOP W24L257AQ-15 15 4120 200 Standard type one TSOP W24L257AQ-20 20 100 200 Standard type one TSOP Notes: 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. Publication Release Date: December 1996. -7- Revision A5inbond Electronica Corp. PACKAGE DIMENSIONS 28-pin P-DIP Skinny W24L257A Db Aaa bo O LPGd Oe CAC ae A Rat GALA in inches | _Dimansioe in mm Symbol Min. | Nom. Max. | Min, |Nom. | Max. A | - jos [| | jaws Ay [oo | | Jos | | ~ Az [0125 |a130 jo195 | ata | sso | 343 6 SO [G08 ;O022 | O41 | 046 | O58 R. | omse [2080 fooed | 147 | 1.52 | 163 c Oosce jooro facts | 020 | o25 | oe D {res fi40 | jaazs | 56 E Oxo | Ost | OR FEZ 787 | 3 E: o283 [ozs toos | 7.419 | 7.92 | 7.44 8: O08 )h100 | 0190 229 254 279 t 61 |oio 7140 3.05 3x 356 8 Do ~~ | we o [ Ba D3 1030 | 0370 | 338 a6o a40 Ss a | - jas | | ~- | 140 Notes: 1. Dimensions D Max. & S include mold flash or tie bar burrs. 2. Dimension E71 does not inchide interlead flash. 3. Dimensions D-& E1 include mold mismatch and are determined at . the mold parting fine. 4. Dimension 81 does not include dambar 5. Controlling dimension: inches. 8. General appearance spec. should be based on final visual nspection spec. 28-pin Smali Outline J Band a 6 OOOO oe so o COTS 1 1 Dimension in inches jam Min, | Nom. | Max. | Min. | Nom. | Max. A | fore | ~ | [ss8 A: [oar | | [ow | - | Az [9098 |o100 [oss | 241 | 254 | 287 Come :0026 [0032 ) O66 ) 071 | aat 8016 |ac1s [ome2 | O41 OMG | O86 6008 [O50 [OO | O20 | O25 | 026 > 10710 | G,730 ane [1603 [1854 O58 | 749 | 762 | 7.75 0.064 (0.080 [OSE | 112 | 4.27 142 OR8S | 622 | 673 724 o1Pimjiololr ic 2 8B 2 3 i He | oser josey [6347 | a3: jase | 301 L oorr |ooey (ome7 | 196 [22t | 246 $ _ [ODE 7 --- | isa y = | jem | -- | [or 8 Cl ee C | 0 Notes 1. Dimensions D Max. & S include moti flash or tie bar burrs. 2. Dimension b does not include dambar protrusionintrusion. 3. Dimensions 0 & E inchate moid mismatch and are determined at the moid parting kne. 4, Controlling dimension: Inches. 5. General appearance spec. should be based on final: visual inspection spec.W24L257A inbond Electronics Corp. Package Dimensions, continued 28-pin Standard Type One TSOP Ho Dimension In inches | Dimension In mm Symbot D Min, | Nom. | Max. | Min. | Nom. | Max. Cc A 0.047 1.20 avo L A 9.002 0.6006! oo5 015 a co Ao 0.035 | 0.940) 0.041| 095} t00! 405 e re : = b 0.007 | 0.008] 0.011] 0.171 0.20! 0.27 ap EE c 0.004 [ 0.008] 0008] o10) 0795) O21 = Cc Dp 0,461 | 0.465] 0.469) 11.70| 147.80; 44.90 = E> E 0.311| 0.315] 0.318/ 790! 8.00! 810 b rr Pe Ho | 9520] 9.528] 0536) +920; 13.40| 13.60 e 0.022 085 L 0.020 | 0.024] 8.028] 050; 960; 0.70 Li 0.010 0.25 Y 0.060 0.004 0.00 9.10 8 0 3 0 3 5 0 Hi AIA a A: AS Controlling dimension: Millimeters Li Winbond Electronics Corp. Headquarters Winbond Electronics (H.K.) Ltd. Winbond Electronics North America Corp. No. 4, Creation Rad. Ill, Rm. 803, World Trade Square, Tower il, Winbond Memory Lab. / Science-Based Industrial Park, owl Bun Ra. wun Tong, Winbond Microelectronics Corp. Hsinchu, Taiwan owloon, Hong Kong : TEL: 886-3-5770066 TEL: 852-27513100 Winbond Systems Lab. FAX: BG6-3-5792647 FAX: 852-27552064 2736 Orchard Parkway, San Jose, http:www.winbond.com.tw/ CA 95134, U.S.A. Voice & Fax-on-demand: 886-2-7197006 TEL: 1-408-9436666 FAX: 1-408-9436668 Taipei Office 11F, No. 115, Sec. 3, Min-Sheng East Rd., Taipei, Taiwan TEL: 886-2-7190505 FAX: 886-2-7197502 Note: Ali data and specifications are subject to change without notice. Publication Release Date: December 1996 -9- Revision A5