NM27C256Q National, NM27C256Q Datasheet
NM27C256Q
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NM27C256Q Summary of contents
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... High Performance CMOS EPROM General Description The NM27C256 is a 256K Electrically Programmable Read Only Memory It is manufactured in National’s latest CMOS split gate EPROM technology which enables it to operate at speeds as fast as 120 ns access time over the full operating ...
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Connection Diagrams 27C080 27C040 27C020 27C010 27C512 A19 A16 A16 A16 A16 A15 A15 A15 A15 A15 A12 A12 A12 A12 A12 ...
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... Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Storage Temperature b All Input Voltages except A9 with Respect to Ground V and A9 with Respect PP to Ground V Supply Voltage with CC Respect to Ground Read Operation ...
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Capacitance MHz (Note Symbol Parameter Conditions C Input Capacitance Output Capacitance V OUT OUT AC Test Conditions Output Load Input Rise and Fall ...
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... IH t Input Timing Reference Voltage IN t Output Timing Reference Voltage OUT Programming Waveforms Note 1 National’s standard product warranty applies to devices programmed to specifications described herein Note 2 V must be applied simultaneously or before V CC board with voltage applied Note 3 The maximum absolute allowable voltage which may be applied to the V ...
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Fast Programming Algorithm Flow Chart FIGURE 10833 – 6 ...
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... Output OR-Typing Because the EPROM is usually used in larger memory ar- rays National has provided a 2-line control function that accommodates this use of multiple memory connections The 2-line control function allows for a) the lowest possible memory power dissipation and ...
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... The Manufacturer’s Identification code shown in Table II specifically identifies the manufacturer and device type The code for NM27C256 is ‘‘8F04’’ where ‘‘8F’’ designates that it is made by National Semiconductor and ‘‘04’’ designates a 256K part The code is accessed by applying 12V ...
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Mode Selection The modes of operation of NM27C256 listed in Table I A single 5V power supply is required in the read mode All inputs are TTL levels except for V and A9 for device signature PP Pins CE PGM ...
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... Physical Dimensions inches (millimeters) UV Window Cavity Dual-In-Line CerDIP Package (Q) 28-Lead Plastic One-Time-Programmable Dual-In-Line Package Order Number NM27C256QXXX NS Package Number J28AQ OrderNumber NM27C256NXXX NS Package Number N28B 11 ...
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... TWX (910) 339-9240 Telex 527649 Fax (81-41) 35-1 National does not assume any responsibility for use of any circuitry described no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications Order Number NM27C256VXXX NS Package Number VA32A ...