MOSEL-VITELIC MS62256H 32K x 8 HIGH SPEED CMOS STATIC RAM MS62256H ADVANCED INFORMATION Features Description ■ High-speed – 15/20/25/35 ns ■ Low Power dissipation: MS62256HL 1.1W (Max.) Operating 1mW (Max.) Power down ■ Fully static operation ■ All inputs and outputs directly TTL compatible ■ Three state outputs ■ Ultra low data retention supply current at VCC = 2V The MS62256H is a 262,144-bit static random access memory organized as 32,768 words by 8 bits and operates from a single 5 volt supply. It is built with MOSEL-VITELIC’s high performance twin tub CMOS process. Inputs and three-state outputs are TTL compatible and allow for direct interfacing with common system bus structures. The MS62256H is available in the following standard 28-pin packages: 600 MIL Plastic DIP 300 MIL Plastic DIP 300 MIL Small Outline J-Bend (SOJ) Pin Configurations Functional Block Diagram MS62256H MOSEL-VITELIC Pin Descriptions A0 - A14 Address Inputs These 15 address inputs select one of the 32768 8-bit words in the RAM. E Chip Enable Input E is active LOW. The chip enable must be active to read from or write to the device. If it is not active, the device is deselected and is in a standby power mode. The DQ pins will be in the high-impedance state when deselected. Output Enable Input The output enable input is active LOW. If the output enable is active while the chip is selected and the write enable is inactive, data will be present on the DQ pins and they will be enabled. The DQ pins will be in the high impedance state when G is inactive. W Write Enable Input The write enable input is active LOW and controls read and write operations. With the chip enabled, when W is HIGH and G is LOW, output data will be present at the DQ pins; when W is LOW, the data present on the DQ pins will be written into the selected memory location. DQ0 - DQ7 Data Input/Output Ports These 8 bidirectional ports are used to read data from or write data into the RAM. G Mode E G W I/O Operation Standby H X X High Z Read L L H DOUT Output Disabled L H H High Z Write L X L D IN Absolute Maximum Ratings (1) 1. Power Supply VSS Ground Operating Range Truth Table Symbol VCC Parameter Rating Units VCC Supply Voltage -0.3 to 7 VIN Input Voltage -0.3 to 7 VDQ Input/Output Voltage Applied -0.3 to 6 TBIAS Temperature Under Bias Plastic -10 to +125 °C TSTG Storage Temperature Plastic -40 to +150 °C V PD Power Dissipation 1.2 W IOUT DC Output Current 50 mA 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 reliability and degrade performance characteristics. Range Ambient Temperature Vcc Commercial 0°C to +70°C 5V ± 10% MS62256H MOSEL-VITELIC DC Electrical Characteristics (over the commercial operating range) Parameter Name Parameter VIL Guaranteed Input Low Voltage(2,3) –0.3 - 0.8 VIH Guaranteed Input High Voltage(2) 2.2 - 6.0 V IIL Input Leakage Current VCC = Max, V IN = 0V to VCC –2 - 2 µA –2 - 2 µA - - 0.4 V 2.4 - - V - - 200 mA 1. 2. 3. 4. 5. Test Conditions MS62256H Min. Typ.(1) Max. Units V IOL Output Leakage Current VCC = Max, E = VIH or G = VIH, VIN = 0V t o VCC VOL Output Low Voltage VCC = Min, IOL = 8mA VOH Output High Voltage VCC = Min, IOH = -4.0mA ICC Operating Power Supply Current VCC = Max, E = VIL, IDQ = 0mA, F = Fm ax(4) ICCSB Standby Power Supply Current VCC = Max, E = V IH, IDQ = 0mA - - 40 mA ICCSB1 Power Down Power Supply VCC = Max, E ≥V - - 2 mA Current VIN ≥V - - 130(5) µA CC CC – 0.2V – 0.2V or VIN ≤0.2V Typical characteristics are at VCC = 5V, TA = 25°C. These are absolute values with respect to device ground and all overshoots due to system or tester noise are included. VIL (Min.) = –3.0V for pulse width ≤ 20ns FMAX = 1/tRC. L version only. Capacitance(1) TA = 25°C, f = 1.0MHz Symbol Parameter Conditions Max. Unit C IN Input Capacitance VIN = 0V 8 pF CI/O Input/Output Capacitance VI/O = 0V 10 pF 1. This parameter is guaranteed and not tested. Data Retention Characteristics (over the commercial operating range) Symbol Test Conditions VDR VCC for Data Retention E ≥V CC – ICCDR Data Retention Current E ≥V CC– 0.2V, VIN ≥V tCDR tR 1. 2. 3. Parameter Chip Deselect to Data Retention Time Operation Recovery Time 0.2V, VIN ≥V CC – 0.2V or VIN ≤0.2V CC-– 0.2V or VIN ≤0.2V Min. Typ.(1) Max(2) 2.0( - - V - 2 504) µA 0 - - ns tRC(3) - - ns Units See Retention Waveform VCC = 2V, TA = +25°C VCC = 3V tRC = Read Cycle Time Timing Waveform Low VCC Data Retention Waveform MS62256H MOSEL-VITELIC AC Test Conditions Input Pulse Levels Key to Switching Waveforms 0V to 3.0V Input Rise and Fall Times 3ns Timing Reference Level 1.5V AC Test Loads and Waveforms AC Electrical Characteristics (over the commercial operating range) Read Cycle Jedec Parameter Parameter Name Name MS62256H-15 MS62256H-20 MS62256H-25 MS62256H-35 Parameter Min. Max. Min. Max. Min. Max. Min. Max. Unit ns tAVAX tRC Read Cycle Time 15 - 20 - 25 - 35 - tAVQV tAA Address Access Time - 15 - 20 - 25 - 35 ns tELQV tACS Chip Enable Access Time - 15 - 20 - 25 - 35 ns tGLQX tOE Output Enable to Output Valid - 8 - 10 - 12 - 15 ns tEHQZ tCLZ Chip Enable to Output Low Z 5 - 5 - 5 - 5 - ns tGLQX tOLZ Output Enable to Output in Low Z 0 - 0 - 0 - 0 - ns tEHQZ tCHZ Chip Disable to Output in High Z - 8 - 8 - 10 - 15 ns tGHQZ tOHZ Output Disable to Output in High Z - 8 - 8 - 10 - 15 ns tAXQX tOH Output Hold from Address Change 3 - 5 - 5 - 5 - ns MOSEL-VITELIC MS62256H Switching Waveforms (Read Cycle) READ CYCLE 1(1) READ CYCLE 2(1, 2, 4) READ CYCLE 3(1, 3, 4) NOTES: 1. W is High for READ Cycle. 2. Device is continuously selected E = VIL. 3. Address valid prior to or coincident with E transition low. 4. G = VIL. 5. Transition is measured ± 500mV from steady state with CL = 5pF as shown in Figure 1b. This parameter is guaranteed and not 100% tested. MS62256H MOSEL-VITELIC AC Electrical Characteristics (over the commercial operating range) Write Cycle Jedec Parameter Parameter Name Name MS62256H-15 MS62256H-20 MS62256H-25 MS62256H-35 Parameter Min. Max. Min. Max. Min. Max. Min. Max. Unit ns tAVAX tWC Write Cycle Time 15 - 20 - 25 - 35 - tELWH tCW Chip Enable to End of Write 10 - 15 - 20 - 25 - ns tAVWL tAS Address Set up Time 0 - 0 - 0 - 0 - ns tAVWH tAW Address Valid to End of Write 10 - 15 - 20 - 25 - ns tWLWH tWP Write Pulse Width 12 - 12 - 15 - 20 - ns tWHAX tWR Write Recovery Time 0 - 0 - 0 - 0 - ns tWLQZ tWHZ Write to Output in High Z 0 10 0 10 0 13 0 15 ns tDVWH tDW Data to Write Time Overlap 8 - 10 - 13 - 15 - ns tWHDX tDH Data Hold from Write Time 0 - 0 - 0 - 0 - ns tGHQZ tOHZ Output Disable to Output in High Z 0 8 0 8 0 10 0 - ns tWHQX tOW Output Active from End of Write 3 - 3 - 3 - 0 - ns Switching Waveforms (Write Cycle) WRITE CYCLE 1(1) MOSEL-VITELIC MS62256H Switching Waveforms (Write Cycle) WRITE CYCLE 2(1,6) NOTES: 1. W must be high during address transitions. 2. The internal write time of the memory is defined by the overlap E active and W 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. 3. TWR is measured from the earlier of E or W going high at the end of write cycle. 4. During this period, DQ pins are in the output state so that the input signals of opposite phase to the outputs must not be applied. 5. If the E low transition occurs simultaneously with the W low transitions or after the W low transition, outputs remain in a high impedance state. 6. G is continuously low (G = VIL). 7. DOUT is the same phase of write data of this write cycle. 8. DOUT is the read data of next address. 9. If E is low during this period, DQ pins are in the output state. Then the data input signals of opposite phase to the outputs must not be applied to them. 10. Transition is measured ±500mV from steady state with CL = 5pF as shown in Figure 1b on page 4. This parameter is guaranteed and not 100% tested. 11. tCW is measured from E going low to the end of write. MS62256H MOSEL-VITELIC Ordering Information Speeds Ordering Part Number Package Temperature Range 15 MS62256H-15NC 28 Pin Plastic DIP - 300 mil 0°C to +70°C 15 MS62256H-15RC 28 Pin Small Outline J Bend 0°C to +70°C 20 MS62256H-20NC 28 Pin Plastic DIP - 300 mil 0°C to +70°C 20 MS62256H-20RC 28 Pin Small Outline J Bend 0°C to +70°C 25 MS62256H-25NC 28 Pin Plastic DIP - 300 mil 0°C to +70°C 25 MS62256H-25RC 28 Pin Small Outline J Bend 0°C to +70°C 35 MS62256H-35NC 28 Pin Plastic DIP - 300 mil 0°C to +70°C 35 MS62256H-35RC 28 Pin Small Outline J Bend 0°C to +70°C Package Dimensions 28 Pin 300 mil Plastic DIP 28 Pin 300 mil SOJ MOSEL-VITELIC WORLDWIDE OFFICES MS62256H U.S.A. TAIWAN JAPAN KOREA 3910 NORTH FIRST STREET SAN JOSE, CA 95134 PHONE: 408-433-6000 FAX: 408-433-00952 5F, NO.. 102 MIN CHUAN E. ROAD, SEC.3 TAIPEI PHONE: 011-886-2-545-1213 FAX: 011-886-2-545-1214 RM.302 ANNEX-G HIGASHI-NAKANO NAKANO-KU, TOKYO 164 PHONE: 011-81-03-3365-2851 FAX: 011-81-03-3365-2836 RM. 309, BEUK-EUN BLDG. 1339-1 SEOCHO-DONG, SEOCHO-KU SEOUL, KOREA PHONE: 011-82-2-553-3385 FAX: 011-82-2-553-3675 HONG KONG 1 R&D ROAD I SCIENCE BASED IND. PARK HSIN CHU, TAIWAN, R.O.C. PHONE: 011-886-35-770055 FAX: 011-886-35-776520 KSP R&D C-4F, SSAKADO 3-2-1 TAKATSU-KU, KAWASAKI-SHI KANAGAWA PREF 213 PHONE: 011-81-04-4812-4397 FAX: 011-81-04-4812-4074 19 DAI FU STREET TAIPO INDUSTRIAL ESTATE TAIPO, NT, HONG KONG PHONE: 011-852-665-4883 FAX: 011-852-664-7535 U.S. SALES OFFICES NORTHWESTERN SOUTHWESTERN CENTRAL & SOUTHEASTERN 3910 NORTH FIRST STREET SAN JOSE, CA 95134 PHONE: 408-433-6000 FAX: 408-433-0952 SUITE 200 5150 E. PACIFIC COAST HWY. LONG BEACH, CA 90804 PHONE: 310-498-3314 FAX: 310-597-2174 604 FIELDWOOD CIRCLE RICHARDSON, TX 75081 PHONE: 214-690-1402 FAX: 214-690-0341 NORTHEASTERN SUITE 306 71 SPITBROOK ROAD NASHUA, NH 03062 PHONE: 603-891-2007 FAX: 603-891-3597 5/93 © Copyright 1993, MOSEL-VITELIC Inc. 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 Printed in U.S.A. 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. 3910 N. First Street, San Jose, CA 95134-1501 Ph: (408) 433-6000 Fax: (408) 433-0952 Tlx: 371-9461