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MS62256H Dataheets PDF



Part Number MS62256H
Manufacturers Mosel Vitelic
Logo Mosel Vitelic
Description 32K x 8 HIGH SPEED CMOS STATIC RAM
Datasheet MS62256H DatasheetMS62256H Datasheet (PDF)

MOSEL-VITELIC MS62256H 32K x 8 HIGH SPEED CMOS STATIC RAM AMDVSA62N2C5E6DH INFORMATION Features s High-speed – 15/20/25/35 ns s Low Power dissipation: MS62256HL 1.1W (Max.) Operating 1mW (Max.) Power down s Fully static operation s All inputs and outputs directly TTL compatible s Three state outputs s Ultra low data retention supply current at VCC = 2V Description 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 s.

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MOSEL-VITELIC MS62256H 32K x 8 HIGH SPEED CMOS STATIC RAM AMDVSA62N2C5E6DH INFORMATION Features s High-speed – 15/20/25/35 ns s Low Power dissipation: MS62256HL 1.1W (Max.) Operating 1mW (Max.) Power down s Fully static operation s All inputs and outputs directly TTL compatible s Three state outputs s Ultra low data retention supply current at VCC = 2V Description 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 MOSEL-VITELIC MS62256H 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. G 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. Truth Table Mode E G W I/O Operation Standby H X X Read LLH Output L H H Disabled Write L XL High Z DOUT High Z D IN 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. VCC Power Supply VSS Ground Operating Range Range Ambient Temperature Commercial 0°C to +70°C Vcc 5V ± 10% Absolute Maximum Ratings (1) Symbol Parameter VCC Supply Voltage VIN Input Voltage VDQ Input/Output Voltage Applied TBIAS TSTG PD Temperature Under Plastic Bias Storage Plastic Temperature Power Dissipation IOUT DC Output Current Rating Units -0.3 to 7 -0.3 to 7 V -0.3 to 6 -10 to +125 °C -40 to +150 °C 1.2 W 50 mA 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 reliability and degrade performance characteristics. MOSEL-VITELIC MS62256H DC Electrical Characteristics (over the commercial operating range) Parameter Name Parameter Test Conditions VIL Guaranteed Input Low Voltage(2,3) VIH Guaranteed Input High Voltage(2) IIL Input Leakage Current VCC= Max, V IN = 0V to VCC 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 (4) ax MS62256H Min. Typ.(1) Max. –0.3 - 0.8 2.2 - 6.0 –2 - 2 –2 - 2 - - 0.4 2.4 - - - - 200 Units V V µA µA V V mA ICCSB ICCSB1 Standby Power Supply Current Power Down Power Supply Current VCC = Max, E = V IH, IDQ = 0mA VCC = Max, E ≥V CC – 0.2V VIN≥V CC – 0.2V or VIN≤0.2V - - 40 mA - - 2 mA - - 130(5) µA 1. Typical characteristics are at VCC = 5V, TA = 25°C. 2. These are absolute values with respect to device ground and all overshoots due to system or tester noise are included. 3. VIL (Min.) = –3.0V for pulse width ≤ 20ns 4. FMAX = 1/tRC. 5. L version only. Capacitance(1) TA = 25°C, f = 1.0MHz Symbol Parameter Conditions Max. C IN Input Capacitance CI/O Input/Output Capacitance VIN = 0V VI/O = 0V 8 10 1. This parameter is guaranteed and not tested. Unit pF pF Data Retention Characteristics (over the commercial operating range) Symbol VDR ICCDR tCDR tR Parameter VCC for Data Retention Data Retention Current Chip Deselect to Data Retention Time Operation Recovery Time Test Conditions E ≥V CC – 0.2V, VIN≥V CC – 0.2V or VIN≤0.2V E ≥V CC– 0.2V, VIN≥V CC-– 0.2V or VIN≤0.2V See Retention Waveform 1. VCC = 2V, TA = +25°C 2. VCC = 3V 3. tRC = Read Cycle Time Min. 2.0( 0 Typ.(1) 2 Max(2) - 504) Units V µA - - ns tRC(3) - - ns Timing Waveform Low VCC Data Retention Waveform MOSEL-VITELIC AC Test Conditions Input Pulse Levels Input Rise and Fall Times Timing Reference Level 0V to 3.0V 3ns 1.5V MS62256H Key to Switching .


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