 |
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
|
| If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
|
| Datasheet File OCR Text: |
| WED8L24514V SRAM, 3.3V, Asynchronous SRAM, 3.3V, 512Kx24 FEATURES DESCRIPTION n n 512Kx24 bit CMOS Static Random Access Memory Array * Fast Access Times: 10, 12, and 15ns * Master Output Enable and Write Control * Three Chip Enables for Byte Control * TTL Compatible Inputs and Outputs * Fully Static, No Clocks The WED8L24514VxxBC is a 3.3V, twelve megabit SRAM constructed with three 512Kx8 die mounted on a multilayer laminate substrate. With 10 to 15ns access times, x24 width and a 3.3V operating voltage, the WED8L24514V is ideal for creating a single chip memory solution for the Motorola DSP5630x or a two chip solution for the Analog Devices SHARC TM DSP. The single or dual chip memory solutions offer improved system performance by reducing the length of board traces and the number of board connections compared to using multiple monolithic devices. The JEDEC Standard 119 lead BGA provides a 61% space savings over using three 512Kx8, 400 mil wide SOJs and the BGA package has a maximum height of 110 mils compared to 148 mils for the SOJ packages. n Surface Mount Package * 119 Lead BGA (JEDEC MO-163), No. 391 * Small Footprint, 14mmx22mm * Multiple Ground Pins for Maximum Noise Immunity n n Single +3.3V (5%) Supply Operation DSP Memory Solution * Motorola DSP5630x * Analog Devices SHARC TM FIG. 1 PIN CONFIGURATION PIN SYMBOLS PIN NAMES 1 A B C D E F G H J K L M N P R T U NC NC I/012 I/013 I/014 I/015 I/016 I/017 NC I/018 I/019 I/020 I/021 I/022 I/023 NC NC 2 AO A5 NC VCC GND VCC GND VCC GND VCC GND VCC GND VCC A18 A9 A13 3 A1 A6 E2 GND VCC GND VCC GND VCC GND VCC GND VCC GND NC A10 A14 4 A2 E0 NC GND GND GND GND GND GND GND GND GND GND GND NC W G 5 A3 A7 E3 GND VCC GND VCC GND VCC GND VCC GND VCC GND NC A11 A15 6 A4 A8 NC VCC GND VCC GND VCC GND VCC GND VCC GND VCC A17 A12 A16 7 NC NC I/00 I/01 I/02 I/03 I/04 I/05 NC I/06 I/07 I/08 I/09 I/010 I/011 NC NC A0-18 E W G DQ0-23 VCC GND NC Address Inputs Chip Enable Master Write Enable Master Output Enable Common Data Input/Output Power (3.3V 5%) Ground No Connection BLOCK DIAGRAM A0-A18 G W E0 E2 E3 19 512K x 24 Memory Array DQ0-7 DQ8-15 DQ16-23 September 2001 Rev. 2 ECO #14670 1 White Electronic Designs Corporation * (508) 366-5151 * www.whiteedc.com WED8L24514V ABSOLUTE MAXIMUM RATINGS RECOMMENDED DC OPER ATING CONDITIONS Parameter Sym Min Typ Max Units Voltage on any pin relative to VSS -0.5V to 4.6V Operating Temperature TA (Ambient) Commercial 0C to + 70C Industrial -40C to +85C Storage Temperature -55C to +125C Power Dissipation 1.5 Watts Output Current. 50 mA *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 rating conditions for extended periods may affect reliability. Supply Voltage Supply Voltage Input High Voltage Input Low Voltage VCC VSS VIH VIL 3.135 0 2.2 -0.3 3.3 0 -- -- 3.465 0 VCC+0.3 0.8 V V V V FIG. 2 FIG. 3 VCC Q Z0 == 50 Z0 50 65 pF DOUT 353 319 RL = 50 AC TEST CONDITIONS 5 pF VL = 1.5V Input Pulse Levels Input Rise and Fall Times Input and Output Timing Levels Output Load VSS to 3.0V 5ns 1.5V Figure 2 NOTE: For tEHQZ,tGHQZ and tWLQZ, Figure 3 DC ELECTRIC AL CHAR ACTERISTICS Parameter Sym Conditions Min 10ns Max 12 - 15ns Units Operating Power Supply Current Standby (TTL) Supply Current Full Standby CMOS Supply Current Input Leakage Current Output Leakage Current Output High Volltage Output Low Voltage ICC1 ICC2 ICC3 ILI ILO VOH VOL W= VIL, II/O = 0mA, Min Cycle E > VIH, VIN < VIL or VIN > VIH, f=OMHz E > VCC - 0.2V VIN > VCC - 0.2V or VIN < 0.2V VIN = 0V to VCC V I/O = 0V to VCC IOH = -4.0mA IOL = 4.0mA 450 150 90 350 150 90 mA mA mA 10 10 2.4 0.4 10 10 0.4 A A V V TRUTH TABLE G E0 E2 E3 W Mode Output Power X H L L L L X X X X H L L L H H L L H H H L L H L H L H L H H L L H H L L H H L X H H H H H L L L L Standby Output Deselect Read (24 bit) Read Read Read Write (24 bit) Write Write Write High Z High Z DOUT DQ0-7 DQ8-15 DQ16-23 DIN DQ0-7 DQ8-15 DQ16-23 ICC2,ICC3 ICC1 ICC1 ICC1 ICC1 ICC1 ICC1 ICC1 ICC1 ICC1 CAPACITANCE (f=1.0MHZ, VIN=VCC Parameter Sym OR VSS) Max Unit Address Lines Data Lines Write & Output Enable Lines Chip Enable Lines CA CD/Q W, G EO, E2, E3 8 10 8 8 pF pF pF pF These parameters are sampled, not 100% tested. White Electronic Designs Corporation * Westborough, MA * (508) 366-5151 2 WED8L24514V AC CHARACTERISTICS READ CYCLE Symbol Parameter JEDEC Alt. 10ns Min Max 12ns Min Max 15ns Min Max Units Read Cycle Time Address Access Time Chip Enable Access Time Chip Enable to Output in Low Z1 Chip Disable to Output in High Z1 Output Hold from Address Change Output Enable to Output Valid Output Enable to Output in Low Z1 Output Disable to Output in High Z1 tAVAV tAVQV tELQV tELQX tEHQZ tAVQX tGLQV tGLQX tGHQZ tRC tAA tACS tCLZ tCHZ tOH tOE tOLZ tOHZ 10 10 10 3 5 3 5 0 5 12 12 12 3 6 3 6 0 6 15 15 15 3 7 3 7 0 7 ns ns ns ns ns ns ns ns ns NOTE 1: Parameter is guaranteed, but not tested. FIG. 4 READ CYCLE 1 - W HIGH, G, E LOW tAVAV A ADDRESS 1 ADDRESS 2 tAVQV Q tAVQX DATA 1 DATA 2 FIG. 5 READ CYCLE 2 - W HIGH tAVAV A tAVQV E tELQV tELQX G tEHQZ tGLQV tGLQX Q tGHQZ 3 White Electronic Designs Corporation * (508) 366-5151 * www.whiteedc.com WED8L24514V AC CHAR ACTERISTICS WRITE CYCLE Symbol Parameter JEDEC Alt. Min 10ns Max 12ns Min Max 15ns Min Max Units Write Cycle Time Chip Enable to End of Write Address Setup Time Address Valid to End of Write Write Pulse Width Write Recovery Time Data Hold Time Write to Output in High Z1 Data to Write Time Output Active from End of Write1 tAVAV tELWH tELEH tAVWL tAVEL tAVWH tAVEH tWLWH tWLEH tWHAX tEHAX tWHDX tEHDX tWLQZ tDVWH tDVEH tWHQX tWC tCW tCW tAS tAS tAW tAW tWP tWP tWR tWR tDH tDH tWHZ tDW tDW tWLZ 10 8 8 0 0 8 8 8 8 0 0 0 0 0 5 5 3 5 12 9 9 0 0 9 9 10 10 0 0 0 0 0 6 6 3 6 15 9 9 0 0 10 10 11 11 0 0 0 0 0 7 7 3 7 ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns NOTE 1: Parameter is guaranteed, but not tested. FIG. 6 WRITE CYCLE 1 - W CONTROLLED tAVAV A tAVWH tELWH E tWHAX tAVWL W tWLWH tDVWH tWHDX D DATA VALID tWLQZ Q HIGH Z tWHQX White Electronic Designs Corporation * Westborough, MA * (508) 366-5151 4 WED8L24514V FIG. 7 WRITE CYCLE 2 - E CONTROLLED tAVAV A tAVEH tELEH E tEHAX tAVEL W tWLEH tDVEH tEHDX D Q HIGH Z DATA VALID ORDERING INFORMATION Commercial (0C to +70C) Par t Number Speed (ns) Package No. Industrial (-40C to +85C) Par t Number Speed (ns) Package No. WED8L24514V10BC WED8L24514V12BC WED8L24514V15BC 10 12 15 391 391 391 WED8L24514V12BI WED8L24514V15BI 12 15 391 391 PACKAGE NO. 391 119 LEAD BGA JEDEC MO-163 5 White Electronic Designs Corporation * (508) 366-5151 * www.whiteedc.com |
Price & Availability of WED8L24514V15BI
 |
|
|
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
| [Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
|
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |