PDF UPD444016L Data sheet ( Hoja de datos )

Número de pieza	UPD444016L
Descripción	4M-BIT CMOS FAST SRAM 256K-WORD BY 16-BIT
Fabricantes	NEC
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No Preview Available ! DATA SHEET MOS INTEGRATED CIRCUIT µPD444016L 4M-BIT CMOS FAST SRAM 256K-WORD BY 16-BIT Description The µPD444016L is a high speed, low power, 4,194,304 bits (262,144 words by 16 bits) CMOS static RAM. Operating supply voltage is 3.3 V ± 0.3 V. The µPD444016L is packaged in 44-pin plastic SOJ and 44-pin plastic TSOP (II). Features • 262,144 words by 16 bits organization • Fast access time : 8, 10, 12 ns (MAX.) • Byte data control : /LB (I/O1 - I/O8), /UB (I/O9 - I/O16) • Output Enable input for easy application • Single +3.3 V power supply Ordering Information Part number Package µPD444016LLE-A8 µPD444016LLE-A10 µPD444016LLE-A12 µPD444016LG5-A8-7JF µPD444016LG5-A10-7JF µPD444016LG5-A12-7JF 44-pin plastic SOJ (10.16 mm (400)) 44-pin plastic TSOP (II) (10.16 mm (400)) (Normal bent) Access time ns (MAX.) 8 10 12 8 10 12 Supply current mA (MAX.) At operating At standby 210 5 190 180 210 190 180 The information in this document is subject to change without notice. Before using this document, please confirm that this is the latest version. Not all devices/types available in every country. Please check with local NEC representative for availability and additional information. Document No. M14431EJ3V0DS00 (3rd edition) Date Published January 2001 NS CP(K) Printed in Japan The mark • shows major revised points. © 1999 1 page µPD444016L DC Characteristics (Recommended Operating Conditions Unless Otherwise Noted) Parameter Symbol Test condition MIN. TYP. Input leakage current ILI VIN = 0 V to VCC –2 Output leakage current ILO VI/O = 0 V to VCC, /CS = VIH or /OE = VIH –2 or /WE = VIL or /LB = VIH or /UB = VIH Operating supply current ICC /CS = VIL, Cycle time : 8 ns II/O = 0 mA, Cycle time : 10 ns Minimum cycle time Cycle time : 12 ns Standby supply current ISB /CS = VIH, VIN = VIH or VIL ISB1 /CS ≥ VCC – 0.2 V, VIN ≤ 0.2 V or VIN ≥ VCC – 0.2 V High level output voltage VOH IOH = –4.0 mA 2.4 Low level output voltage VOL IOL = +8.0 mA Remarks 1. VIN : Input voltage VI/O : Input / Output voltage 2. These DC characteristics are in common regardless of package types. MAX. +2 +2 210 190 180 40 5 0.4 Unit µA µA mA mA V V Capacitance (TA = 25 °C, f = 1 MHz) Parameter Symbol Test condition MIN. Input capacitance Input / Output capacitance CIN VIN = 0 V CI/O VI/O = 0 V Remarks 1. VIN : Input voltage VI/O : Input / Output voltage 2. These parameters are periodically sampled and not 100% tested. TYP. MAX. 6 8 Unit pF pF Data Sheet M14431EJ3V0DS 5 5 Page µPD444016L Write Cycle Timing Chart 3 (/LB, /UB Controlled) Address (Input) /CS (Input) /WE (Input) /LB, /UB (Input) I/O (Input) tAS High impedance tWC tAW tCW tWP tBW tDW Data in tWR tDH High impedance Cautions 1. /CS or /WE should be fixed to high level during address transition. • 2. Do not input data to the I/O pins while they are in the output state. Remark Write operation is done during the overlap time of a low level /CS, a low level /WE and a low level /LB (or low level /UB). Data Sheet M14431EJ3V0DS 11 11 Page

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