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M27C256B-12C6

Name: M27C256B-12C6
Rating: 4.7 (12 reviews)

IC EPROM 256KBIT PARALLEL 32PLCC

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Mfr。パート #M27C256B-12C6
パッケージ PLCC-32
データシート
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仕様

Package	Tube
ProductStatus	Obsolete
MemoryType	Non-Volatile
MemoryFormat	EPROM
Technology	EPROM - OTP
MemorySize	256Kb (32K x 8)
MemoryInterface	Parallel
AccessTime	120 ns
Voltage-Supply	4.5V ~ 5.5V
OperatingTemperature	-40°C ~ 85°C (TA)
MountingType	Surface Mount
Package/Case	32-LCC (J-Lead)

概要

Description

The M27C256B-12C6 is a 32K x 8-bit electrically erasable programmable read-only memory (EPROM) chip designed for applications requiring non-volatile storage. It features a 256K-bit capacity and operates with a supply voltage of 5V. The "B" in its name indicates that it's a bipolar device, while "12" specifies a maximum access time of 120 nanoseconds, making it suitable for moderate-speed applications.
This chip supports byte-wise programming and can be erased using ultraviolet light, allowing for multiple reprogramming cycles. The M27C256B-12C6 is commonly used in embedded systems, microcontroller applications, and other digital circuits where reliable data retention is essential. Its compatibility with standard EPROM programming equipment simplifies the development process and integration into various electronic designs.
Overall, the M27C256B-12C6 is a versatile and reliable ROM solution for engineers and developers needing efficient storage capabilities in their projects.

Features

The M27C256B-12C6 is a UV erasable programmable read-only memory (EPROM) chip with a storage capacity of 256 kilobits (32 KB). Key features include:
1. Access Time: 120 ns (nanoseconds) for fast read operations.
2. Voltage Range: Operates typically at 5V, with a maximum of 6V.
3. Architecture: Organized as 32K x 8 bits, allowing for byte-wide data access.
4. Erase Capability: Erasable using UV light, facilitating multiple programming cycles.
5. Endurance: Typically supports around 100,000 write/erase cycles.
6. Data Retention: Retains data for at least 10 to 20 years under proper conditions.
7. Pin Configuration: 28-pin DIP (Dual In-line Package) for easy integration into various applications.
8. Compatibility: Compatible with standard TTL logic families, making it suitable for a wide range of electronic systems.
This EPROM is commonly used in embedded systems, firmware storage, and other applications requiring non-volatile memory.

Package

The M27C256B-12C6 is packaged in a 32-pin DIP (Dual In-line Package). This type of package is commonly used for integrated circuits, providing easy mounting on printed circuit boards.

Pinout

The M27C256B-12C6 is a 256 Kbit (32 K x 8) UV EPROM (Erasable Programmable Read-Only Memory). It has a pin count of 28.
Pin Functions:
1. A0-A14: Address inputs (for selecting memory locations).
2. Q0-Q7: Data outputs (8-bit data bus).
3. Vpp: Programming voltage input (typically 12.5V for programming).
4. Vcc: Supply voltage (typically 5V for operation).
5. GND: Ground reference.
6. OE (Output Enable): Activates the output buffers when low.
7. CE (Chip Enable): Activates the chip when low; used to select the chip for reading or programming.
8. PGM (Program Mode): Input for programming the chip.
This configuration allows for reading, programming, and erasing the stored data in the chip.

Manufacturer

The M27C256B-12C6 is a product manufactured by STMicroelectronics, a multinational electronics and semiconductor company. STMicroelectronics specializes in the design and production of a wide range of semiconductor devices, including microcontrollers, memory chips, and other integrated circuits. The company serves various industries such as automotive, industrial, consumer electronics, and communications, focusing on innovative solutions that enhance performance and efficiency. Founded in 1987, STMicroelectronics is headquartered in Geneva, Switzerland, and operates globally, contributing significantly to advancements in technology and electronics.

Application

The M27C256B-12C6 is a 256Kb (32K x 8) EPROM used in various applications such as microcontroller programming, firmware storage, and data retention in embedded systems. It is suitable for automotive electronics, telecommunications, consumer electronics, and industrial control systems, providing non-volatile memory for code and configuration storage. Its characteristics also make it useful in prototyping and development environments where reprogrammability is essential.

Equivalent

The M27C256B-12C6 is a 32K x 8-bit EEPROM. Equivalent products include:
1. AM27C256-12
2. 27C256-12
3. AT27C256R-12
4. W27C256-12
5. LH27C256-12
Ensure to check specifications like voltage, timing, and package type for compatibility.