M27C256B-90B6

The M27C256B-90B6 is a 32K x 8-bit (256 Kbit) electrically erasable programmable read-only memory (EEPROM) chip designed for use in various electronic applications. It is part of the M27 family of EPROMs and is typically used for data storage in embedded systems. The "90" in its designation indicates a maximum access time of 90 nanoseconds, which allows for fast data retrieval.
This device is organized in 32,768 words, each 8 bits wide, and supports a wide range of operating voltages, making it versatile for various circuit designs. It features a standard 28-pin dual in-line package (DIP), which integrates easily into PCB layouts.
The M27C256B-90B6 can be programmed and erased electrically, allowing for repeated use without the need for a UV light source, like traditional EPROMs. It is suitable for applications such as firmware storage, configuration data, and other scenarios requiring non-volatile memory.

The M27C256B-90B6 is a 32K x 8-bit EPROM. Equivalent products include the AM27C256-90, ST M27C256, and W27C256. These chips have similar specifications, such as capacity and access times, but may have slight variations in packaging or electrical characteristics. Always verify compatibility with your specific application before replacement.

The M27C256B-90B6 is a 256 Kbit (32 K x 8) UV EPROM (Erasable Programmable Read-Only Memory) that offers several key features:
1. Memory Organization: 32 K x 8 bits, allowing for storage of 32 kilobytes of data.
2. Access Time: 90 ns, providing quick data retrieval.
3. Voltage Range: Operates with a supply voltage of 5V, suitable for standard logic circuits.
4. UV Erasable: Can be erased and reprogrammed using UV light, allowing for flexibility in applications.
5. Single Power Supply: Requires only one power supply for operation, simplifying circuit design.
6. High Reliability: Designed for high endurance and reliability in data retention and programming cycles.
7. Standard DIP Package: Available in a standard dual in-line package for easy integration into various systems.
These features make the M27C256B-90B6 suitable for applications in embedded systems, firmware storage, and other electronic devices requiring programmable memory.

The M27C256B-90B6 is a 256 Kbit (32 K x 8) EPROM (Erasable Programmable Read-Only Memory) device. It has a 28-pin dual in-line package (DIP).
Here are the pin functions:
1. A0-A14: Address inputs (15 address lines).
2. D0-D7: Data outputs (8 data lines).
3. Vpp: Programming voltage input (typically +12.5V for programming).
4. Vcc: Supply voltage (+5V).
5. GND: Ground reference.
6. OE: Output enable (active low).
7. CE: Chip enable (active low).
8. WE: Write enable (active low) – used during programming.
The device allows for fast read access times, with a maximum speed of 90 ns for read operations. The M27C256B can be erased by exposing it to ultraviolet light and can be programmed using standard EPROM programmers.

The M27C256B-90B6 is manufactured by STMicroelectronics, a global semiconductor company. STMicroelectronics specializes in producing a wide range of electronic components, including microcontrollers, sensors, and memory devices. The company is known for its innovative technology and solutions in various sectors such as automotive, industrial, consumer electronics, and communication.
STMicroelectronics was formed in 1987 through the merger of SGS Microelettronica and Thomson Semiconducteurs. It has since established itself as a leading player in the semiconductor industry, focusing on high-performance products that meet the growing demands of modern electronic applications. The M27C256B-90B6 specifically is a type of EEPROM (Electrically Erasable Programmable Read-Only Memory), which is utilized in various electronic devices for data storage and retrieval.
In summary, STMicroelectronics is a prominent semiconductor manufacturer known for its diverse product offerings and contributions to technology across multiple industries.

The M27C256B-90B6 is a UV-erasable EPROM (Erasable Programmable Read-Only Memory) used in various applications, including:
1. Embedded Systems: Storing firmware or software for microcontrollers and processors.
2. Consumer Electronics: Firmware in devices like TVs, VCRs, and home appliances.
3. Automotive: Engine control units (ECUs) for storing calibration data and software.
4. Telecommunications: Firmware for communication devices and networking equipment.
5. Industrial Control: Logic and control programs in manufacturing and automation systems.
Its reprogrammable nature makes it suitable for prototyping and designs requiring updates.

The M27C256B-90B6 is packaged in a 28-pin Dual In-line Package (DIP).