EPROM 512Kx8 100ns PDIP-32 Type M27C4001-10F1

Info as pdf-file
Type: M27C4001-10F1

4 Mbit (512Kb x 8) UV EPROM and OTP EPROM

> 5V ± 10% SUPPLY VOLTAGE in READ OPERATION
> FAST ACCESS TIME: 35ns
> LOW POWER CONSUMPTION:
- Active Current 30mA at 5MHz
- Standby Current 100mA
> PROGRAMMING VOLTAGE: 12.75V ± 0.25V
> PROGRAMMING TIME: 100ms/byte (typical)
> ELECTRONIC SIGNATURE
- Manufacturer Code: 20h
- Device Code: 41h

DESCRIPTION
The M27C4001 is a 4 Mbit EPROM offered in the two ranges UV (ultra violet erase) and OTP (one time programmable). It is ideally suited for microprocessor systems requiring large programs and is organised as 524,288 by 8 bits.
The FDIP32W (window ceramic frit-seal package) and LCCC32W (leadless chip carrier package) have a transparent lid which allow the user to expose the chip to ultraviolet light to erase the bit pattern. A new pattern can then be written to the device by following the programming procedure.
For applications where the content is programmed only one time and erasure is not required, the M27C4001 is offered in PDIP32, PLCC32 and TSOP32 (8 x 20mm) packages.

DEVICE OPERATION
The operating modes of the M27C4001 are listed in the Operating Modes table. A single power supply is required in the read mode. All inputs are TTL levels except for VPP and 12V on A9 for Electronic Signature.
Read Mode
The M27C4001 has two control functions, both of which must be logically active in order to obtain data at the outputs. Chip Enable (E) is the power control and should be used for device selection. Output Enable (G) is the output control and should be used to gate data to the output pins, independent of device selection. Assuming that the addresses are stable, the address access time (tAVQV) is equal to the delay from E to output (tELQV). Data is available at the output after a delay of tGLQV from the falling edge of G, assuming that E has been low and the addresses have been stable for at least tAVQV-tGLQV.
Standby Mode
The M27C4001 has a standby mode which reduces the supply current from 30mA to 100mA. The M27C4001 is placed in the standby mode by applying a CMOS high signal to the E input. When in the standby mode, the outputs are in a high impedance state, independent of the G input.

Two Line Output Control
Because EPROMs are usually used in larger memory arrays, this product features a 2 line control function which accommodates the use of multiple memory connection. The two line control function allows:
a. the lowest possible memory power dissipation,
b. complete assurance that output bus contention will not occur.
For the most efficient use of these two control lines, E should be decoded and used as the primary device selecting function, while G should be made a common connection to all devices in the array and connected to the READ line from the system control bus. This ensures that all deselected memory devices are in their low power standby mode and that the output pins are only active when data is required from a particular memory device.

Pictures are a guide only actual product may vary. Subject to alterations and errors. Help us to eliminate errors:
Please report any errors here.


Are you searching for replacements of semiconductors? The following link brings you to the search window of NTE Electronics (a world wide supplier of high quality electronic components). This QUICKCross software can assist users in selecting the proper NTE replacement device.

QUICKCross Search Engine for NTE Replacement Semiconductors
Our Assortment of NTE- Replacement Devices

Note about NTE replacement devices (formerly ECG Philips and Sylvania):
NTE has one of the most extensive semiconductor lines in the industry. All NTE semiconductors are guaranteed to meet or exceed original specifications. Sprachen integrierter Schaltkreis integrated circuit, kurz IC, Mikrochip Microchip integreret kredsløb integreret kredslob circuito integrado (CI) circuit intégré (CI) circuit integre (CI) circuito integrato geïntegreerde schakeling geintegreerde schakeling Tümdevre Tuemdevre EEE