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| White Electronic Designs 256Kx32 Static RAM CMOS, High Speed Module FEATURES n n n n n n n n n n EDI8F32259V DESCRIPTION 256Kx32 bit CMOS Static RAM Access Times: 12, 15, 20, and 25ns Individual Byte Selects Fully Static, No Clocks tTL Compatible I/O 72 Pin SIMM No. 175 (Angle) 72 Pin ZIP No. 176 72 Pin SIMM No. 354 (Straight) The EDI8F32259V is a high speed 8Mb Static RAM module organized as 256K words by 32 bits. This module is constructed from eight 256Kx4 Static RAMs in SOJ packages on an epoxy laminate (FR4) board. Four chip enables (E0#-E3#) are used to independently enable the four bytes. Reading or writing can be executed on individual bytes or any combination of multiple bytes through proper use of selects. The EDI8F32259V is offered in 72 pin ZIP/SIMM package which enables eight megabits of memory to be placed in less than 1.3 square inches of board space. All inputs and outputs are tTL compatible and operate from a single 3.3V supply. Fully asynchronous circuitry requires no clocks or refreshing for operation and provides equal access and cycle times for ease of use. The ZIP and SIMM modules contain four PD (Presence Detect) pins which are used to identify module memory density in applications where alternate modules can be interchanged. High Density Package with JEDEC Standard Pinouts Single +3.3V (10%) Supply Operation PIN CONFIGURATIONS AND BLOCK DIAGRAM FIG. 1 PIN NAMES A0-A17 E0#-E3# W# G# DQ0-DQ31 VCC VSS Address Inputs Chip Enables Write Enables Output Enable Common Data Input/Output Power (+5V 10%) Ground Oct 2002 Rev. 0A 1 White Electronic Designs Corp. reserves the right to change products or specifications without notice. White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com White Electronic Designs ABSOLUTE MAXIMUM RATINGS* Voltage on any pin relative to VSS Operating Temperature tA (Ambient) Commercial Storage Temperature, Plastic Power Dissipation Output Current -0.5V to 4.6V 0C to +70C -55C to +125C 2.5 Watt 20 mA Parameter Supply Voltage Supply Voltage Input High Voltage Input Low Voltage Sym VCC VSS VIH VIL Min 3.0 0 2.2 -0.3 EDI8F32259V RECOMMENDED DC OPERATING CONDITIONS Typ 3.3 0 --Max 3.6 0 VCC+0.3V 0.8 Units V V V V *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. AC TEST CONDITIONS Input Pulse Levels Input Rise and Fall Times Input and Output Timing Levels Output Load Note: For tEHQZ,tGHQZ and tWLQZ, CL = 5pF) VSS to 3.0V 5ns 1.5V 1tTL, CL = 30pF DC ELECTRICAL CHARACTERISTICS Parameter Operating Power Supply Current Standby (tTL) Power Supply Current Full Standby Power Supply Current CMOS Input Leakage Current Output Leakage Current Output High Voltage Output Low Voltage Note: Typical: tA = 25C, VCC = 5.0V Sym ICC1 ICC2 ICC3 ILI ILO VOH VOL Conditions W#, E# = VIL, II/O = 0mA, Min Cycle E# VIH, VIN VIL or VIN VIH 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 = 8.0mA Min Max 12-25 800 240 40 Units ns mA mA mA A A V V -- -- 2.4 -- 80 20 -- 0.4 TRUTH TABLE E# H L L L W# X H L H G# X L X H Mode Standby Read Write Output Deselect Output HIGH Z DOUT DIN HIGH Z Power ICC3 ICC1 ICC1 ICC1 (f=1.0MHz, VIN=VCC or VSS) Parameter Address Lines Data Lines Chip Enable Line Write Control Line Sym CI CD/Q CC CN Max 60 20 20 60 Unit pF pF pF pF CAPACITANCE Note: These parameters are sampled, not 100% tested. White Electronic Designs Corp. reserves the right to change products or specifications without notice. Oct 2002 Rev. 0A 2 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com White Electronic Designs AC CHARACTERISTICS READ CYCLE Parameter Read Cycle Time Address Access Time Chip Enable Access Chip Enable to Output in Low Z (1) Chip Disable to Output in High Z (1) Output Hold from Address Change Output Enable to Output Valid Output Enable to Output in Low Z (1) Output Disable to Output in High Z (1) Note: 1. Parameter guaranteed, but not tested. EDI8F32259V Symbol JEDEC tAVAV tAVQV tELQV tELQX tEHQZ tAVQX tGLQV tGLQX tGHQZ Alt. tRC tAA tACS tCLZ tCHZ tOH tOE tOLZ tOHZ 12ns Min 12 Max 12 12 3 6 3 6 0 6 0 3 3 15ns Min 15 Max 15 15 3 7 3 7 0 7 20ns Min 20 Max 20 20 3 9 3 9 0 9 Min 25 25ns Max 25 25 9 9 9 Units ns ns ns ns ns ns ns ns ns FIG. 2 READ CYCLE 1 - W# HIGH, G#, E# LOW FIG. 3 READ CYCLE 2 - W# HIGH White Electronic Designs Corp. reserves the right to change products or specifications without notice. Oct 2002 Rev. 0A 3 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com White Electronic Designs AC CHARACTERISTICS WRITE CYCLE Parameter 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 Z (1) Data to Write Time Output Active from End of Write (1) Note 1: Parameter guaranteed, but not tested. EDI8F32259V Symbol JEDEC tAVAV tELWH tWLEH tAVWL tAVEL tAVWH tAVEH tWLWH tELEH tWHAX tEHAX tWHDX tEHDX tWLQZ tDVWH tDVEH tWHQX Alt. tWC tCW tCW tAS tAS tAW tAW tWP tWP tWR tWR tDH tDH tWHZ tDW tDW tWLZ 12ns Min 12 8 8 0 0 8 8 8 8 0 0 3 3 0 6 6 3 Max 15ns Min 15 9 9 0 0 9 9 9 9 0 0 3 3 0 7 7 3 Max 20ns Min 20 10 10 0 0 10 10 10 10 0 0 3 3 0 8 8 3 Max 25ns Min 25 10 10 0 0 10 10 10 10 0 0 3 3 0 8 8 3 Max Units ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns 6 7 9 9 White Electronic Designs Corp. reserves the right to change products or specifications without notice. Oct 2002 Rev. 0A 4 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com White Electronic Designs FIG. 4 WRITE CYCLE 1 - W# CONTROLLED EDI8F32259V FIG. 5 WRITE CYCLE 2 - E# CONTROLLED White Electronic Designs Corp. reserves the right to change products or specifications without notice. Oct 2002 Rev. 0A 5 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com White Electronic Designs ORDERING INFORMATION Part Number EDI8F32259V12MNC EDI8F32259V15MNC EDI8F32259V20MNC EDI8F32259V25MNC EDI8F32259V12MMC EDI8F32259V15MMC EDI8F32259V20MMC EDI8F32259V25MMC EDI8F32259V12MZC EDI8F32259V15MZC EDI8F32259V20MZC EDI8F32259V25MZC Speed (ns) 12 15 20 25 12 15 20 25 12 15 20 25 Package No. 176 176 176 176 354 354 354 354 175 175 175 175 EDI8F32259V NOTE: 1. For Gold SIMM change form EDI8F to EDI8G. PACKAGE DESCRIPTION PACKAGE NO. 175: 72 PIN ZIP CO OT RE N MM FO NDED E RN N DESIG EW S White Electronic Designs Corp. reserves the right to change products or specifications without notice. Oct 2002 Rev. 0A 6 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com White Electronic Designs PACKAGE NO. 176: 72 PIN ANGLED 4.255 MAX. 3.984 110 + REV.# EDI8F32259V .125 DIA (2x) J4 .360 MAX. .400 + .250 J2 J1 .680 MAX. .225 MIN. P1 .052 TYP. .062 R. 2.045 .062 R. .250 3.750 1.992 .125 MIN. PACKAGE NO. 354: 72 PIN SIMM STRAIGHT 4.255 MAX. 3.984 110 + REV.# .125 DIA (2x) J4 .360 MAX. + .250 J2 J1 P1 .400 .680 MAX. .052 TYP. .062 R. .250 .062 R. 2.045 3.750 1.992 .125 MIN. ALL DIMENSIONS ARE IN INCHES White Electronic Designs Corp. reserves the right to change products or specifications without notice. Oct 2002 Rev. 0A 7 White Electronic Designs Corporation * (602) 437-1520 * www.wedc.com |
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