memory products - Al Kossow's Bitsavers

ST27128APPROGRAMMING OPERATION (Tamb=25°C ±5°C, Vee(I)=6V ±O.25V, Vpp(l) = 12.5V ±O.3V)DC AND OPERATING CHARACTERISTICSymbol ParameterTest C::ondltlonsValues(See note 1) Min. Typ. Max.UnitILl Input Current (All Inputs) VIN = VIL or VIH 10 pAVIL Input Low Level (All Inputs) -0.1 0.8 VVIH Input High Level 2.0 Vee+ 1 VVOL Output Low Voltage During Verify IOL=2.1 mA 0.45 VVOH Output High Voltage During Verify 10Hz -400 pA 2.4 Vlee2 Vee Supply Current (Program & Verify) 100 mAIpP2 Vpp Supply Current (Program) CE=VIL 50 mAVIO A9 Electronic Signature Voltage 11.5 12.5 VAC CHARACTERISTICSSymbolParameterTest ConditionsValues(See note 1) Min. Typ. Max. UnittAS Address Setup Time 2 ~stoes OE Setup Time 2 ~stos Data Setup Time 2 ~stAH Address Hold Time 0 ~stOH Data Hold Time 2 ~stOFp(4) Output En'able Output Float Delay 0 130 nstvps Vpp Setup Time 2tves Vee Setup Time 2 ~stees CE Setup Time 2 ~stpw PGM Initial Program Pulse Width (see Note 3) 0.95 1.0 1.05 mstopw PGM Overprogram Pulse Width (see Note 2) 2.85 78.75 mstoe Data Valid from OE 150 nsNotes:1. Vee must be applied simultaneously or before Vpp and removed simultaneously or after Vpp.2. The length of the overprogram pulse may vary from 2.85msec to 78.75msec as a function of the iteration counter value X.3. Initial Program Pulse width tolerance is lmsec ±5%.4. This parametar is only sampled and not 100% tested.Output Float Is defined as the point where data is no longer driven (see timing diagram),. '~s7110161