memory products - Al Kossow's Bitsavers

ST27C256FN-ST27C256PBLOCK DIAGRAMVcc~GNDer­Vpp~DATA OUTPUTS00-07OECEANDOE.ffPROGRAMLOGICOUTPUTBUFFERSVDECODERGATINGAO-A14ADDRESSINPUTSDECODER262,144BITCELL MATRIX5·7517MAXIMUM RATINGS (Note 1)SymbolTambTstgVpp(2)Vin(2)PDRatingOperating temperature rangeST27C256-CST27C256-VST27C256-TStorage temperature rangeSupply voltageInput voltagesExcept Vpp,Max power dissipationLead temperature(Soldering: 10 seconds)A9~ A9Valueh to THo to+ 70-40 to+85-40 to+ 105+65 to+ 125-0.6 to+ 14-0.6to+ 13.5- 0.6 to + 6.251.5+300Notes: 1. "Maximum ratings" are those values beyond which the safety of the device cannot be guaranteed. Except for "Operating temperaturerange" they are not meant to imply that the devices should be operated at these limits. The table of "Electrical characteristics"provides conditions for actual device operation.2. With respect to V SSUnit°c°cVVW°cOPERATING MODES~NSMODECE OE A9 Vpp Vee OUTPUTSREAD VIL VIL X Vee Vee DOUTOUTPUT DISABLE VIL VIH X Vee Vee Hi-ZSTANDBY VIH X X Vee Vee Hi-ZHIGH SPEED PROGRAMMING VIL VIH X Vpp Vee DINPROGRAM VERIFY VIH VIL X Vpp Vee DOUTPROGRAM INHIBIT VIH VIH X Vpp Vee Hi-ZELECTRONIC SIGNATURE(3) VIL VIL VH (2) VCC Vee CODENotes: 1. X can be either VIL or VIH - 2 - VH = 12.0V ± O.5V3. All address lines at VIL except A9 and AO that is toggled from VIL(manufacturer code: 96) to VIH (type code: 04).2/101885i SGS-THOMSON-:r i. i1il1~1RI©~~~~VIlil©ill~~