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M27C256B-12F1

Name: M27C256B-12F1
Rating: 4.7 (12 reviews)

IC EPROM 256KBIT PARALLEL 28CDIP

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製造商。部分 #M27C256B-12F1
包 CDIP-28
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規格

Package	Tube
ProductStatus	Obsolete
MemoryType	Non-Volatile
MemoryFormat	EPROM
Technology	EPROM - UV
MemorySize	256Kb (32K x 8)
MemoryInterface	Parallel
AccessTime	120 ns
Voltage-Supply	4.5V ~ 5.5V
OperatingTemperature	0°C ~ 70°C (TA)
MountingType	Through Hole
Package/Case	28-CDIP (0.600, 15.24mm) Window

概述

Description

The M27C256B-12F1 is a high-performance, 32K x 8-bit electrically erasable programmable read-only memory (EEPROM) chip. It is part of the M27 series, designed for applications requiring non-volatile memory storage. The "256" indicates it has a capacity of 256 Kbits, while the “B” denotes its byte-wide structure.
Key features include a fast access time of up to 120 ns, which allows for quick data retrieval, and a single 5V power supply for operation. The chip supports both serial and parallel programming modes, making it versatile for various applications. It also offers a reliable erase cycle, enabling users to rewrite data easily.
Applications of the M27C256B-12F1 include embedded systems, consumer electronics, and industrial devices, where firmware and configuration data need to be stored permanently even when power is removed. Additionally, it features UV erasure, which allows for data resetting through exposure to ultraviolet light, enhancing usability in development and testing environments.

Features

The M27C256B-12F1 is a 256 Kbit (32K x 8) UV erasable programmable read-only memory (EPROM) with the following key features:
1. Memory Organization: 32K x 8 bits, allowing storage of 32K bytes of data.
2. Access Time: 120 ns, providing fast read operations suitable for various applications.
3. Voltage Range: Operates typically at +5V, with a maximum programming voltage of +12.5V.
4. Endurance: Supports up to 100,000 write/erase cycles, making it versatile for repeated programming.
5. Data Retention: Retains data for up to 20 years under proper conditions.
6. Package Types: Available in dual in-line package (DIP) and other formats for compatibility.
7. Programming Method: UV light exposure for erasing, followed by electrical programming.
8. Pin Count: 28 pins, standard for many EPROMs, facilitating easy integration into circuits.
These features make the M27C256B-12F1 suitable for applications such as firmware storage, code development, and other memory-intensive roles in electronics.

Package

The M27C256B-12F1 is a 32-pin dual in-line package (DIP) type of EPROM memory.

Pinout

The M27C256B-12F1 is a 32K x 8-bit (256 Kbit) EPROM (Erasable Programmable Read-Only Memory) device. It has a total of 28 pins.
The pin functions are as follows:
1. A0-A14: Address Inputs (14 pins for addressing memory locations).
2. DQ0-DQ7: Data Inputs/Outputs (8 pins for data bus).
3. CE: Chip Enable (activates the chip).
4. OE: Output Enable (controls the output).
5. WE: Write Enable (used for programming and erasing).
6. VPP: Programming Voltage (for programming the device).
7. VCC: Supply Voltage (typically +5V).
8. VSS: Ground connection (0V).
The M27C256B-12F1 is primarily used in applications requiring non-volatile memory storage, such as firmware storage in embedded systems.

Manufacturer

The M27C256B-12F1 is manufactured by STMicroelectronics, a global semiconductor company that specializes in microelectronics and integrated circuits. STMicroelectronics is known for its broad range of products, including memory chips, microcontrollers, analog devices, and sensors, catering to various industries such as automotive, industrial, consumer electronics, and telecommunications. The company is headquartered in Geneva, Switzerland, and has a strong presence in the global market, focusing on innovation and sustainability in its semiconductor solutions.

Application

The M27C256B-12F1 is a 256K-bit (32K x 8) EPROM widely used in applications such as firmware storage, embedded systems, microcontroller programs, and digital signal processing. It is suitable for automotive electronics, telecommunications, and industrial control systems, where non-volatile memory is required for code storage and data retention. Its ability to be erased and reprogrammed makes it useful for prototyping and development purposes.

Equivalent

Equivalent products to the M27C256B-12F1 EEPROM include the AM27C256-12, AT27C256R-12, and 27C256-12. These chips provide similar functionality and specifications, such as 32KB capacity and 12ns access time. Always verify compatibility with your specific application.