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| MOSEL VITELIC V62C318256 2.7 VOLT 32K X 8 STATIC RAM PRELIMINARY Features I High-speed: 35, 70 ns I Ultra low DC operating current of 2mA (max.) I Low Power Dissipation: - TTL Standby: 0.5 mA (Max.) - CMOS Standby: 10 A (Max.) I Fully static operation I All inputs and outputs directly compatible I Three state outputs I Ultra low data retention current (VCC = 2V) I Extended operating voltage: 2.7V-3.6V I Packages - 28-pin TSOP (Standard) - 28-pin 300 mil SOP (450 mil pin-to-pin) Description The V62C318256 is a 262,144-bit static random access memory organized as 32,768 words by 8 bits. It is built with MOSEL VITELIC's high performance CMOS process. Inputs and threestate outputs are TTL compatible and allow for direct interfacing with common system bus structures. Functional Block Diagram A0 Row Decoder 512 x 512 Memory Array VCC GND A8 I/O0 Input Data Circuit I/O7 A9 CE OE WE Column I/O Column Decoder A14 Control Circuit 318256 01 Device Usage Chart Operating Temperature Range 0C to 70 C -40C to +85C Package Outline T * * F * * Access Time (ns) 35 * * 70 * L * Power LL * * Temperature Mark Blank I V62C318256 Rev. 1.7 July 2001 1 MOSEL VITELIC Pin Descriptions A0-A14 Address Inputs These 15 address inputs select one of the 32,768 x 8 bit segments in the RAM. CE Chip Enable Inputs CE is an active LOW input. Chip Enable must be LOW when reading from or writing to the device. When HIGH, the device is in standby mode with I/O pins in the high impedance state. OE Output Enable Input The Output Enable input is active LOW. When OE is LOW with CE LOW and WE HIGH, data of the selected memory location will be available on the I/O pins. When OE is HIGH, the I/O pins will be in the high impedance state. V62C318256 WE Write Enable Input An active LOW input, WE input controls read and write operations. When CE and WE inputs are both LOW, the data present on the I/O pins will be written into the selected memory location. I/O0-I/O7 Data Input and Data Output Ports These 8 bidirectional ports are used to read data from and write data into the RAM. VCC GND Power Supply Ground Pin Configurations (Top View) 28-Pin SOP A14 A12 A7 A6 A5 A4 A3 A2 A1 A0 I/O0 I/O1 I/O2 GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 318256 02 28-Pin TSOP (Standard) VCC WE A13 A8 A9 A11 OE A10 CE I/O7 I/O6 I/O5 I/O4 I/O3 OE A11 A9 A8 A13 WE VCC A14 A12 A7 A6 A5 A4 A3 22 23 24 25 26 27 28 1 2 3 4 5 6 7 21 20 19 18 17 16 15 14 13 12 11 10 9 8 318256 03 A10 CE I/O7 I/O6 I/O5 I/O4 I/O3 GND I/O2 I/O1 I/O0 A0 A1 A2 V62C318256 Rev. 1.7 July 2001 2 MOSEL VITELIC Part Number Information V MOSEL-VITELIC MANUFACTURED V62C318256 62 C 31 8 256 - TEMP. SRAM FAMILY OPERATING VOLTAGE DENSITY 256K PWR. SPEED PKG BLANK = 0C to 70C I = -40C to +85C 62 = ASYNCHRONOUS, SLOW C = CMOS PROCESS 31 = 2.7V - 3.6V 35 ns 70 ns T = TSOP STANDARD F = 330 mil SOP (450 mil pin-to-pin) ORGANIZATION 8 = 8-bit L = LOW POWER LL = DOUBLE LOW POWER 318256 05 Absolute Maximum Ratings (1) Symbol VCC VN VDQ TBIAS TSTG Parameter Supply Voltage Input Voltage Input/Output Voltage Applied Temperature Under Bias Storage Temperature Commercial -0.5 to VCC+0.5 -0.5 to VCC+0.5 VCC + 0.3 -10 to +125 -55 to +125 Industrial -0.5 to VCC+0.5 -0.5 to VCC+0.5 VCC + 0.3 -65 to +135 -65 to +150 Units V V V C C NOTE: 1. Stresses 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 above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reli- ability. Capacitance* TA = 25C, f = 1.0MHz Symbol CIN COUT Parameter Input Capacitance Output Capacitance Conditions VIN = 0V VI/O = 0V Max. 6 8 Unit pF Truth Table Mode Standby Read pF Read Write L L H X H L CE H L OE X L WE X H I/O Operation High Z DOUT High Z DIN NOTE: * This parameter is guaranteed and not tested. NOTE: X = Don't Care, L = LOW, H = HIGH V62C318256 Rev. 1.7 July 2001 3 MOSEL VITELIC DC Electrical Characteristics (over all temperature ranges, VCC = 2.7V - 3.6V) Symbol VCC VIL VIH IIL IOL VOL VOH V62C318256 Parameter Power Supply Voltage Input LOW Voltage(1,2) Input HIGH Voltage(1) Input Leakage Current Output Leakage Current Output LOW Voltage Output HIGH Voltage Test Conditions Min. 2.7 -0.3 2.2 Typ. -- -- -- -- -- -- -- Max. 3.6 0.4 VCC+0.3 2 2 0.4 -- Units V V V A A V V VCC = Max, VIN = 0V to VCC VCC = Max, CE = VIH, VOUT = 0V to VCC VCC = Min, IOL = 2.1mA VCC = Min, IOH = -1mA -2 -2 -- 2.4 Symbol ICC (read) ICC (write) ICC1 ISB Parameter Operating Power Supply Current, CE = VIL, WE = VIH Output Open, VCC = Max., f = 0 Operating Power Supply Current, CE = VIL, WE = VIL Output Open, VCC = Max., f = 0 Average Operating Current, CE VIL Output Open, VCC = Max., f = fMAX(3) TTL Standby Current CE VIH, VCC = Max. CMOS Standby Current, CE VCC - 0.2V, VIN VCC - 0.2V or VIN 0.2V, VCC = Max. L LL L LL Com.(4) 2 20 40 2 1 50 15 Ind. 2 20 40 3 1 60 20 Units mA mA mA mA ISB1 A NOTES: 1. These are absolute values with respect to device ground and all overshoots due to system or tester noise are included. 2. VIL (Min.) = -3.0V for pulse width < 20ns. 3. fMAX = 1/tRC. 4. Maximum values. AC Test Conditions Input Pulse Levels Input Rise and Fall Times Timing Reference Levels Output Load 0 to 3V 5 ns 1.5V see below Key to Switching Waveforms WAVEFORM INPUTS MUST BE STEADY MAY CHANGE FROM H TO L OUTPUTS WILL BE STEADY WILL BE CHANGING FROM H TO L WILL BE CHANGING FROM L TO H CHANGING: STATE UNKNOWN CENTER LINE IS HIGH IMPEDANCE "OFF" STATE AC Test Loads and Waveforms +3V 1103 I/O Pins 1554 CL = 30 pF* MAY CHANGE FROM L TO H DON'T CARE: ANY CHANGE PERMITTED DOES NOT APPLY * Includes scope and jig capacitance 318256 07 V62C318256 Rev. 1.7 July 2001 4 MOSEL VITELIC Data Retention Characteristics Symbol VDR ICCDR V62C318256 Parameter VCC for Data Retention CE VCC - 0.2V Com'l L LL Ind. L LL Min. 2.0 -- -- -- -- 0 tRC(1) Typ.(2) -- 1 0.5 -- -- -- -- Max. 3.6 40 10 45 15 -- -- Units V A Data Retention Current VDR = 3.0V, CE VDR - 0.2V tCDR tR Chip Deselect to Data Retention Time Operation Recovery Time (see Retention Waveform) ns ns NOTES: 1. tRC = Read Cycle Time 2. TA = +25C. Low VCC Data Retention Waveform Data Retention Mode VCC 2.7V tCDR CE 2.2V CE VCC - 0.2V VDR 2V tR 2.2V 318256 06 2.7V V62C318256 Rev. 1.7 July 2001 5 MOSEL VITELIC AC Electrical Characteristics (over all temperature ranges) Read Cycle Parameter Name tRC tAA tACS tOE tCLZ tOLZ tCHZ tOHZ tOH V62C318256 -35 Parameter Read Cycle Time Address Access Time Chip Enable Access Time Output Enable to Output Valid Chip Enable to Output in Low Z Output Enable to Output in Low Z Chip Disable to Output in High Z Output Disable to Output in High Z Output Hold from Address Change -70 Max. -- 35 35 15 -- -- 20 20 -- Min. 35 -- -- -- 5 5 0 0 5 Min. 70 -- -- -- 5 5 0 0 5 Max. -- 70 70 30 -- -- 20 20 -- Unit ns ns ns ns ns ns ns ns ns Write Cycle Parameter Name tWC tCW tAS tAW tWP tWR tWHZ tDW tDH tOHZ tOW -35 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 Write to Output High-Z Data Setup to End of Write Data Hold from End of Write Output Disable to Output in High Z Output Active from End of Write -70 Max. -- -- -- -- -- -- 20 -- -- 25 -- Min. 35 35 0 35 25 0 0 25 0 0 5 Min. 70 70 0 70 50 0 0 30 0 0 5 Max. -- -- -- -- -- -- 25 -- -- 30 -- Unit ns ns ns ns ns ns ns ns ns ns ns V62C318256 Rev. 1.7 July 2001 6 MOSEL VITELIC Switching Waveforms (Read Cycle) Read Cycle 1(1, 2) tRC ADDRESS tAA OE tOE tOLZ I/O tOHZ(5) V62C318256 318256 12 Read Cycle 2(1, 2, 4) tRC ADDRESS tOH I/O 318256 13 tAA tOH Read Cycle 3(1, 3, 4) ADDRESS tACS CE tCLZ(5) I/O 318256 14 tCHZ(5) NOTES: 1. WE = VIH. 2. CE = VIL. 3. Address valid prior to or coincident with CE transition LOW. 4. OE = VIL. 5. Transition is measured 500mV from steady state with CL = 5pF. This parameter is guaranteed and not 100% tested. V62C318256 Rev. 1.7 July 2001 7 MOSEL VITELIC Switching Waveforms (Write Cycle) Write Cycle 1 (WE Controlled)(4) tWC ADDRESS tCW(6) CE tAS WE tWP(1) OUTPUT tWHZ(3) INPUT tDW tDH tAW tWR(2) V62C318256 318256 15 Write Cycle 2 (CE Controlled)(4) tWC ADDRESS tAS CE tAW WE Hi-Z tDW INPUT 318256 11 tCW(6) tWR(2) OUTPUT tDH (5) NOTES: 1. The internal write time of the memory is defined by the overlap of CE active and WE low. Both signals must be active to initiate and any one signal can terminate a write by going inactive. The data input setup and hold timing should be referenced to the second transition edge of the signal that terminates the write. 2. tWR is measured from the earlier of CE or WE going HIGH. 3. During this period, I/O pins are in the output state so that the input signals of opposite phase to the outputs must not be applied. 4. OE = VIL or VIH. However it is recommended to keep OE at VIH during write cycle to avoid bus contention. 5. If CE is LOW during this period, I/O pins are in the output state. Then the data input signals of opposite phase to the outputs must not be applied to them. 6. tCW is measured from CE going LOW to the end of write. V62C318256 Rev. 1.7 July 2001 8 MOSEL VITELIC Package Diagrams 28-pin 330 mil SOP V62C318256 Units in inches [mm] 0 MIN (STAND OFF) 0.339 0.008 [8.61 0.203] 0.465 0.012 [11.81 0.305] 0.402 0.012 [10.21 0.203] 0.031 0.008 [0.787 0.203] INDEX 0.713 [18.11] TYP 0.006 0.002 [0.152 0.051] 0.112 [0.285] MAX "A" 0.098 0.005 [2.49 0.127] 0.018 0.004 [0.457 0.102] 0.008 [0.203] View "A" 0.050 [1.27] TYP 0.024 [0.610] 0.008 [0.203] MAX 0.027 [0.686] MAX V62C318256 Rev. 1.7 July 2001 9 MOSEL VITELIC Package Diagrams (Cont'd) 28-Pin TSOP Unit in inches [mm] V62C318256 0.463 0.003 [11.76 0.076] 0.528 0.008 [13.41 0.203] 0.315 0.004 [8.00 0.102] 0.046 0.004 [1.17 0.102] +0.007 0.020 -0.008 +0.178 0.508 -0.305 0.006 0.002 [0.152 0.051] 0.022 [0.559] BSC 0.006 0.004 [0.152 0.102] V62C318256 Rev. 1.7 July 2001 10 MOSEL VITELIC Notes V62C318256 V62C318256 Rev. 1.7 July 2001 11 MOSEL VITELIC U.S.A. 3910 NORTH FIRST STREET SAN JOSE, CA 95134 PHONE: 408-433-6000 FAX: 408-433-0952 WORLDWIDE OFFICES TAIWAN 7F, NO. 102 MIN-CHUAN E. ROAD, SEC. 3 TAIPEI PHONE: 886-2-2545-1213 FAX: 886-2-2545-1209 NO 19 LI HSIN ROAD SCIENCE BASED IND. PARK HSIN CHU, TAIWAN, R.O.C. PHONE: 886-3-579-5888 FAX: 886-3-566-5888 V62C318256 UK & IRELAND SUITE 50, GROVEWOOD BUSINESS CENTRE STRATHCLYDE BUSINESS PARK BELLSHILL, LANARKSHIRE, SCOTLAND, ML4 3NQ PHONE: 44-1698-748515 FAX: 44-1698-748516 SINGAPORE 10 ANSON ROAD #23-13 INTERNATIONAL PLAZA SINGAPORE 079903 PHONE: 65-3231801 FAX: 65-3237013 JAPAN ONZE 1852 BUILDING 6F 2-14-6 SHINTOMI, CHUO-KU TOKYO 104-0041 PHONE: 03-3537-1400 FAX: 03-3537-1402 GERMANY (CONTINENTAL EUROPE & ISRAEL) BENZSTRASSE 32 71083 HERRENBERG GERMANY PHONE: +49 7032 2796-0 FAX: +49 7032 2796 22 U.S. SALES OFFICES NORTHWESTERN 3910 NORTH FIRST STREET SAN JOSE, CA 95134 PHONE: 408-433-6000 FAX: 408-433-0952 SOUTHWESTERN 302 N. EL CAMINO REAL #200 SAN CLEMENTE, CA 92672 PHONE: 949-361-7873 FAX: 949-361-7807 CENTRAL, NORTHEASTERN & SOUTHEASTERN 604 FIELDWOOD CIRCLE RICHARDSON, TX 75081 PHONE: 214-826-6176 FAX: 214-828-9754 (c) Copyright 1998, MOSEL VITELIC Inc. 7/01 Printed in U.S.A. The information in this document is subject to change without notice. MOSEL VITELIC makes no commitment to update or keep current the information contained in this document. No part of this document may be copied or reproduced in any form or by any means without the prior written consent of MOSEL-VITELIC. MOSEL VITELIC subjects its products to normal quality control sampling techniques which are intended to provide an assurance of high quality products suitable for usual commercial applications. MOSEL VITELIC does not do testing appropriate to provide 100% product quality assurance and does not assume any liability for consequential or incidental arising from any use of its products. If such products are to be used in applications in which personal injury might occur from failure, purchaser must do its own quality assurance testing appropriate to such applications. MOSEL VITELIC 3910 N. First Street, San Jose, CA 95134-1501 Ph: (408) 433-6000 Fax: (408) 433-0952 Tlx: 371-9461 |
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