memory products - Al Kossow's Bitsavers

ST27C256FNST27C256P256K (32K x 8) CMOS ONE TIME PROGRAMMABLE ROM• COMPATIBLE TO ST27C256 EPROM (ELEC­TRICAL PARAMETER,PROGRAMMING)• PROGRAMMING VOLTAGE 12.5V.• HIGH SPEED PROGRAMMING• 28-PIN JEDEC APPROVED PIN-OUT• 32-PIN JEDEC APPROVED PIN OUT• IDEAL FOR AUTOMATIC INSERTIONPDIP-28(Plastic Package)FNPLCC32(Plastic Chip Carrier)(Ordering Information at the end of the datasheet)PIN CONNECTIONSDESCRIPTIONThe ST27C256P and ST27C256FN are high speed262,144K bit One Time Programmable (OTP)CMOS ROM ideally suited for applications wherefast turn-around is an important requirement.The ST27C256P is packaged in a 28-pin dual-inlineplastic package, the ST27C256FN in a 32-pinPLCC plastic package, and therefore can not bere-written. Programming is performed according tostandard SGS-THOMSON 256K EPROM procedure.A12 2 27 1414147 26 A13AS 2S A8145 24 149144 23 1411143 7 ST27C256P 22 OE142 21 1410141 20 CE140 10 19 0100 11 IS 0601 12 17 0502 13 16 04GNO 14 15 03PIN NAMESAO-A14ADDRESSCECHIP ENABLEOEOUTPUT ENABLE00-0 7 OUTPUTSNCNON CONNECTEDDUDO NOT USEA6 ~ 5AS [ •A4[ 7A3 [ •A2 ~ ,A1 ~ 10AD ~ 11NC ~ 1200 11I 12 11 30ST27C256FN,.1516171119205S~~8~~":f>2t ~ AS28 J A927 JAil2e JNC25 ~ OE,. ~ A1D21 geE22 P 07" p06June 19881/10187