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TMS27PC256-25NL Datasheet(PDF) 1 Page - Texas Instruments |
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TMS27PC256-25NL Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 13 page  TMS27C256 32768 BY 8BIT UV ERASABLE TMS27PC256 32768 BY 8BIT PROGRAMMABLE READONLY MEMORIES SMLS256H− SEPTEMBER 1984 − REVISED NOVEMBER 1997 1 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 D Organization ...32768 by 8 Bits D Single 5-V Power Supply D Pin Compatible With Existing 256K MOS ROMs, PROMs, and EPROMs D All Inputs /Outputs Fully TTL Compatible D Max Access/Min Cycle Time VCC ± 10% ’27C / PC256-10 100 ns ’27C / PC256-12 120 ns ’27C / PC256-15 150 ns ’27C / PC256-17 170 ns ’27C / PC256-20 200 ns ’27C / PC256-25 250 ns D Power Saving CMOS Technology D Very High-Speed SNAP! Pulse Programming D 3-State Output Buffers D 400-mV Minimum DC Noise Immunity With Standard TTL Loads D Latchup Immunity of 250 mA on All Input and Output Lines D Low Power Dissipation (VCC = 5.5 V) − Active . . . 165 mW Worst Case − Standby . . . 1.4 mW Worst Case (CMOS Input Levels) D Temperature Range Options D 256K EPROM Available With MIL-STD-883C Class B High Reliability Processing (SMJ27C256) description The TMS27C256 series are 32 768 by 8-bit (262 144-bit), ultraviolet (UV) light erasable, electrically programmable read-only memories (EPROMs). The TMS27PC256 series are 32 768 by 8-bit (262 144-bit), one-time programmmable (OTP) electrically programmable read-only memories (PROMs). Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 32 1 32 31 14 5 6 7 8 9 10 11 12 13 29 28 27 26 25 24 23 22 21 430 15 16 17 18 19 20 PIN NOMENCLATURE A0 − A14 Address Inputs DQ0 − DQ7 Inputs (programming) / Outputs E Chip Enable / Powerdown G Output Enable GND Ground NC No Internal Connection NU Make No External Connection VCC 5-V Power Supply VPP 13-V Power Supply † J PACKAGE ( TOP VIEW ) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 VPP A12 A7 A6 A5 A4 A3 A2 A1 A0 DQ0 DQ1 DQ2 GND VCC A14 A13 A8 A9 A11 G A10 E DQ7 DQ6 DQ5 DQ4 DQ3 A8 A9 A11 NC G A10 E DQ7 DQ6 A6 A5 A4 A3 A2 A1 A0 NC DQ0 FM PACKAGE ( TOP VIEW ) † Only in program mode PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. Copyright 1997, Texas Instruments Incorporated |
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