memory products - Al Kossow's Bitsavers

ST27128APREAD OPERATIONDC AND AC CONDITIONSSelection Code -15X/-20X - 201-25/- 30Operating Temperature Range o to 70°C o to 70°CVee Power Supply (1,2) 5V ±5% 5V ±10%Vpp Voltage (2) Vpp = Vee Vpp = VeeDC AND OPERATING CHARACTERISTICSValuesSymbol Parameter Test ConditionsMin. Typ. (3) Max.UnitIII Input Load Current VIN=5.5V 10 ~AILO Output Leakage Current VOUT=5.5V 10 ~AIpPl(2) Vpp Current Read Standby Vpp=5.5V 5 mAleel(2) Vee Current Standby CE=VIH 40 mAlee2(2) Vee Current Active CE=OE=VIL 85 mAVpp = VeeVIL Input Low Voltage -0.1 +0.8 VVIH Input High Voltage 2.0 Vee+ 1 VVOL Output Low Voltage IOL=2.1 mA 0.45 VVOH Output High Voltage IOH= -400 ~A 2.4 VVpp(2) Vpp Read Voltage Vee =5V ±0.25V 3.8 Vee VAC CHARACTERISTICSVcc± 5%27128A·15X 27128A·20XSymbol Parameter Vcc±10% 27128A·20 27128A·25 27128A·30 UnitTest Conditions Min Max Min Max Min Max Min MaxtAee Address to Output Delay CE=OE=VIL 150 200 250 300 nsteE CE to Output Delay OE=VIL 150 200 250 300 nstOE OE to Output Delay CE=VIL 65 75 100 120 nstOF(4) OE High to Output Float CE=VIL 55 0 55 0 60 0 105 nstOH Output..!::!?ld from Address CE=OE= VIL 0 0 0 0 nsCE or OE WhicheverOccurred First:;APACITANCE(5) (Tamb=25°C, f=1 MHz)Symbol Parameter Test Conditions Min. Typ. Max. UnitCIN' Input Capacitance VIN=OV 4 6 pFCOUT Output Capacitance VOUT=OV 8 12 pFlotes:1. Vce must be applied simultaneously or before Vpp and removed simultaneously or after Vpp.2. Vpp may be connected directly to Vce except during programming.The supply current would then be the sum of Icc and IpP1 '3. Typical values are for T amb = 25°C and nominal supply voltages.4. This parameter is only sampled and not 100% tested. Output Float is defined as the point where data is no longer driven.(See timing diagram).5. This parameter is only sampled and is not 100% tested.3/10157