M27C256B-12F1

The M27C256B-12F1 is a CMOS EPROM (Erasable Programmable Read-Only Memory) integrated circuit, specifically offering a memory capacity of 256 Kbit (32,768 x 8 bits). It is manufactured by STMicroelectronics and is part of their M27C series. The "12F1" designation refers to its access time of 120 ns, making it suitable for applications requiring fast data retrieval.
Key features include:
1. Non-volatility: Retains data without power.
2. UV Erasable: Data can be erased with exposure to UV light, allowing the chip to be reprogrammed.
3. High Speed: Fast read access time.
4. Compatibility: Compatible with TTL levels and operates in a wide range of systems.
5. Packaging: Typical packages include DIP (Dual In-line Package), making it suitable for through-hole PCB assembly.
The M27C256B is commonly used in applications such as microcontrollers, data storage, and legacy system maintenance. Its reliability and ease of use make it a popular choice for many electronic projects requiring stable and reprogrammable memory storage solutions.

The M27C256B-12F1 is a 256Kb (32K x 8) UV EPROM chip. Equivalent products include the Intel D27C256, AMD AM27C256, and Atmel AT27C256R. These chips have similar pin configurations, storage capacities, and functionalities, making them suitable replacements for each other in compatible applications. Always check the datasheets for specific electrical and timing characteristics to ensure compatibility.

The M27C256B-12F1 is a 256-Kbit (32K x 8) UV EPROM with the following key features:
1. UV Erasable and Reprogrammable: It can be erased with ultraviolet light and reprogrammed, allowing for multiple cycles of use.
2. Fast Access Time: Offers a fast access time of 120 ns, making it suitable for applications requiring quick data retrieval.
3. Compatibility: It is pin-compatible with other 28-pin EPROMs, which makes it easy to integrate into existing systems.
4. Low Power Consumption: Designed for low power consumption, both in active and standby modes, making it efficient for use in a variety of devices.
5. Data Retention: Offers reliable data retention, typically over 10 years, ensuring long-term data integrity.
6. High-Temperature Operation: Can operate in a wide temperature range, often from -40°C to +85°C, suitable for industrial applications.
7. Programming Voltage: Requires a programming voltage of 12.75V for programming the data.
These features make the M27C256B-12F1 a versatile choice for various embedded systems and applications that require non-volatile memory storage.

The M27C256B-12F1 is a 256-kilobit (32K x 8) UV EPROM (Erasable Programmable Read-Only Memory) with a total of 28 pins. Its primary function is to store data permanently, with the ability to erase and reprogram it using ultraviolet light.
Pin Count and Functions:
- Address Pins (A0-A14): 15 pins for addressing, allowing access to the 32K memory locations.
- Data Output Pins (Q0-Q7): 8 pins for data output.
- Chip Enable (E\*): Enables the chip when low.
- Output Enable (G\*): Enables data output when low.
- Program Pin (P): Used during programming.
- VPP: Programming voltage input.
- VCC: Power supply pin (typically +5V).
- VSS: Ground pin.
This EPROM is utilized in applications where data integrity must be preserved, such as firmware storage for microcontrollers.

The M27C256B-12F1 is manufactured by STMicroelectronics. STMicroelectronics is a leading global semiconductor company that designs, develops, manufactures, and markets a broad range of semiconductor products. It serves customers across various markets, including automotive, industrial, personal electronics, computer, and communications equipment. The company is known for its innovation in semiconductor technology and offers a wide array of products, including microcontrollers, sensors, power management devices, and more. With a focus on sustainability and technological advancement, STMicroelectronics aims to contribute to a smarter and more energy-efficient world.

The M27C256B-12F1 is a 256Kb (32K x 8) UV EPROM memory chip used in various applications such as microcontroller program storage, firmware storage in embedded systems, and legacy computer systems. It is also utilized in industrial control equipment, telecommunications, and other electronic devices requiring non-volatile memory. Its capability to be erased and reprogrammed makes it suitable for prototyping and development purposes. Additionally, it can be used in retro computing projects and for maintaining or reproducing vintage hardware systems.

The M27C256B-12F1 is a 256Kb (32K x 8) UV EPROM with a DIP (Dual In-line Package) configuration. It typically comes in a 28-pin DIP package, used for various applications requiring reliable read-only memory storage that can be erased and reprogrammed using UV light.