Texas Instruments TMS27C040 524288 by 8-bit UV erasable TMS27PC040 524288 by 8-bit programmable read-only memory Data Manual (1) User Guide

查询TMS27C040供应商 TMS27C040 524288 BY 8-BIT UV ERASABLE

TMS27PC040 524288 BY 8-BIT

PROGRAMMABLE READ-ONLY MEMORY SMLS040F – NOVEMBER 1990 – REVISED SEPTEMBER 1997

Organization 524288 by 8 Bits TMS27C040 J PACKAGE

Single 5-V Power Supply

(TOP VIEW)

Industry Standard 32-Pin Dual In-Line Package and 32-Lead Plastic Leaded Chip VPP VCC Carrier A16 A18

All Inputs/Outputs Fully TTL Compatible A15 A17 A12 A14

Static Operation (No Clocks, No Refresh)

Max Access/Min Cycle Time

VCC 10%

’27C/PC040-10 100 ns A4 A11 ’27C/PC040-12 120 ns A3 ’27C/PC040-15 150 ns A2 A10

8-Bit Output For Use in A1 Microprocessor-Based Systems A0 DQ7 DQ0 DQ6

Power-Saving CMOS Technology

DQ1 DQ5

3-State Output Buffers

DQ2 DQ4

400-m V Assured DC Noise Immunity With

GND DQ3

Standard TTL Loads Latchup Immunity of 250 m A on All Input

TMS27PC040

and Output Pins FM PACKAGE

(TOP VIEW)

No Pullup Resistors Required Low Power Dissipation (VCC = 5.5 V) – Active 275 m W Worst Case – Standby 0.55 m W Worst Cas E

(CMOS-Input Levels) A7 A14

Temperature Range Options

A5 A8 description A4 A9 A3 A11

The TMS27C040 devices are 524288 by 8-bit

(4194304-bit), ultraviolet (UV) light erasable,

electrically programmable read-only memories

(EPROMs).

DQ0 DQ7

The TMS27PC040 devices are 524288 by 8-bit (4194304-bit), one-time programmable (OTP) electrically programmable read-only memories (PROMs).

PIN NOMENCLATURE

These devices are fabricated using CMOS

A0–A18 Address Inputs

technology for high speed and simple interface

DQ0–DQ7 Inputs (programming) /Outputs

with MOS and bipolar circuits. All inputs ( including

Chip Enable

program data inputs) can be driven by the Series

Output Enable

74 TTL circuits. Each output can drive one Series GND Ground

74 TTL circuit without external resistors. VCC 5-V Supply VPP 13-V Power Supply†

Only in program mode.

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.

Copyright  1997, Texas Instruments Incorporated 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.

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