ON Semiconductor
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NM27C256V90
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NM27C256V90

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Non-volatile Memory
  • Characteristics: High-speed, low-power, electrically erasable programmable read-only memory (EEPROM)
  • Package: 28-pin DIP (Dual In-line Package)
  • Essence: Stores and retrieves digital information even when power is turned off
  • Packaging/Quantity: Available in tubes or trays, quantity varies based on manufacturer

Specifications

  • Memory Size: 256 kilobits (32 kilobytes)
  • Organization: 32K x 8 bits
  • Access Time: 90 nanoseconds
  • Supply Voltage: 5 volts
  • Operating Temperature Range: -40°C to +85°C
  • Data Retention: More than 10 years
  • Endurance: 1,000,000 write cycles

Pin Configuration

The NM27C256V90 has a total of 28 pins. The pin configuration is as follows:

  1. A14
  2. A12
  3. A7
  4. A6
  5. A5
  6. A4
  7. A3
  8. A2
  9. A1
  10. A0
  11. VPP
  12. A8
  13. A9
  14. A11
  15. A10
  16. CE
  17. OE
  18. WE
  19. I/O0
  20. I/O1
  21. I/O2
  22. I/O3
  23. I/O4
  24. I/O5
  25. I/O6
  26. I/O7
  27. GND
  28. VCC

Functional Features

  • High-speed operation allows for fast data access
  • Low-power consumption makes it suitable for battery-powered devices
  • Electrically erasable and programmable, enabling data modification without removing the chip from the circuit
  • Non-volatile memory retains data even when power is turned off

Advantages and Disadvantages

Advantages: - High-speed operation - Low-power consumption - Electrically erasable and programmable - Non-volatile memory

Disadvantages: - Limited storage capacity compared to other memory types - Relatively higher cost per bit compared to some alternatives

Working Principles

The NM27C256V90 is based on EEPROM technology. It utilizes a grid of floating-gate transistors to store digital information. The stored data can be read, modified, or erased electrically through specific control signals.

Detailed Application Field Plans

The NM27C256V90 is commonly used in various applications, including but not limited to: - Computer systems - Consumer electronics - Automotive electronics - Industrial control systems - Communication devices

Alternative Models

Some alternative models that offer similar functionality to the NM27C256V90 include: - AT28C256 - M27C256B - 27C256 - AM27C256

These models may have slight variations in specifications and pin configuration, so it is important to refer to their respective datasheets for detailed information.

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Noem 10 veelgestelde vragen en antwoorden met betrekking tot de toepassing van NM27C256V90 in technische oplossingen

Sure! Here are 10 common questions and answers related to the application of NM27C256V90 in technical solutions:

  1. Q: What is NM27C256V90? A: NM27C256V90 is a type of EPROM (Erasable Programmable Read-Only Memory) chip that can store up to 32 kilobytes of data.

  2. Q: What are some common applications of NM27C256V90? A: NM27C256V90 is commonly used in embedded systems, microcontrollers, automotive electronics, and other electronic devices that require non-volatile memory storage.

  3. Q: How does NM27C256V90 differ from other types of memory chips? A: NM27C256V90 is an EPROM chip, which means it can be programmed once and retains its data even when power is removed. It requires a separate UV eraser to erase the data before reprogramming.

  4. Q: What is the maximum operating frequency of NM27C256V90? A: The maximum operating frequency of NM27C256V90 is typically around 90 MHz.

  5. Q: Can NM27C256V90 be used as a replacement for other memory chips? A: Yes, NM27C256V90 can often be used as a drop-in replacement for other 32KB memory chips, provided the pinout and voltage requirements match.

  6. Q: How do I program NM27C256V90? A: Programming NM27C256V90 involves applying the desired data and control signals to the appropriate pins using a programmer device or microcontroller with programming capabilities.

  7. Q: Can NM27C256V90 be reprogrammed multiple times? A: No, NM27C256V90 is an EPROM chip and can only be programmed once. To change the stored data, the chip needs to be erased using a UV eraser before reprogramming.

  8. Q: What is the typical power supply voltage for NM27C256V90? A: The typical power supply voltage for NM27C256V90 is 5 volts (Vcc).

  9. Q: Does NM27C256V90 require any special programming software or tools? A: Yes, to program NM27C256V90, you will need a compatible programmer device or microcontroller with programming capabilities, along with appropriate software.

  10. Q: Can NM27C256V90 operate in harsh environments? A: NM27C256V90 is not specifically designed for harsh environments. It is recommended to use additional protective measures, such as conformal coating or enclosures, if operating in extreme conditions.

Please note that these answers are general and may vary depending on specific datasheet specifications and application requirements.