規格
| 屬性 | 價值 |
| Package | Tube |
| ProductStatus | Obsolete |
| MemoryType | Non-Volatile |
| MemoryFormat | EPROM |
| Technology | EPROM - UV |
| MemorySize | 256Kb (32K x 8) |
| MemoryInterface | Parallel |
| AccessTime | 100 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-10F1 is a UV EPROM (Erasable Programmable Read-Only Memory) chip manufactured by STMicroelectronics. It offers a storage capacity of 256 kilobits, organized as 32,768 words by 8 bits. The "-10F1" in the part number indicates a specific speed grade, with access times of up to 100 nanoseconds, making it suitable for applications requiring fast data retrieval.
This chip is designed for applications that require non-volatile memory, meaning it retains data even when powered off. It uses ultraviolet light for data erasure, allowing it to be reprogrammed multiple times. Encased in a 28-pin dual in-line package (DIP), it is compatible with standard microprocessor buses.
The M27C256B offers data retention for up to 20 years and can endure at least 100 erase/write cycles. Its reliability and ease of use make it ideal for prototyping, development, and small-scale production that benefit from reusable memory components. Its primary applications include gaming machines, industrial controls, and legacy computing systems.
This chip is designed for applications that require non-volatile memory, meaning it retains data even when powered off. It uses ultraviolet light for data erasure, allowing it to be reprogrammed multiple times. Encased in a 28-pin dual in-line package (DIP), it is compatible with standard microprocessor buses.
The M27C256B offers data retention for up to 20 years and can endure at least 100 erase/write cycles. Its reliability and ease of use make it ideal for prototyping, development, and small-scale production that benefit from reusable memory components. Its primary applications include gaming machines, industrial controls, and legacy computing systems.
Equivalent
The M27C256B-10F1 is a 256K (32K x 8) UV EPROM. Equivalent products include:
1. AM27C256 from AMD
2. TMS27C256 from Texas Instruments
3. AT27C256R from Atmel
4. HN27C256 from Hitachi
5. MBM27C256 from Fujitsu
These alternatives are similar in capacity and functionality but may have variations in speed and voltage specifications, so it’s important to verify compatibility based on specific requirements.
1. AM27C256 from AMD
2. TMS27C256 from Texas Instruments
3. AT27C256R from Atmel
4. HN27C256 from Hitachi
5. MBM27C256 from Fujitsu
These alternatives are similar in capacity and functionality but may have variations in speed and voltage specifications, so it’s important to verify compatibility based on specific requirements.
Features
The M27C256B-10F1 is a 256Kb UV EPROM from STMicroelectronics. Key features include:
1. Capacity: 256 Kbits (32 K x 8 bits).
2. Access Time: 100 ns, facilitating fast data retrieval.
3. Programming and Erasing: UV-light erasable and electrically reprogrammable.
4. Package: Typically available in a 28-pin dual in-line package (DIP).
5. Operating Voltage: Requires a single 5V power supply for read operations.
6. Compatibility: Compatible with TTL levels.
7. Data Retention: Offers over 10 years of data retention.
8. Reliability: More than 100 erase/write cycles.
9. Temperature Range: Operates efficiently within a wide temperature range, typically -40°C to +85°C.
10. Security: Features include a chip enable pin for easy interfacing and preventing unauthorized access.
These attributes make it suitable for applications requiring non-volatile memory storage that can be erased and reprogrammed, such as firmware storage in consumer electronics or industrial applications.
1. Capacity: 256 Kbits (32 K x 8 bits).
2. Access Time: 100 ns, facilitating fast data retrieval.
3. Programming and Erasing: UV-light erasable and electrically reprogrammable.
4. Package: Typically available in a 28-pin dual in-line package (DIP).
5. Operating Voltage: Requires a single 5V power supply for read operations.
6. Compatibility: Compatible with TTL levels.
7. Data Retention: Offers over 10 years of data retention.
8. Reliability: More than 100 erase/write cycles.
9. Temperature Range: Operates efficiently within a wide temperature range, typically -40°C to +85°C.
10. Security: Features include a chip enable pin for easy interfacing and preventing unauthorized access.
These attributes make it suitable for applications requiring non-volatile memory storage that can be erased and reprogrammed, such as firmware storage in consumer electronics or industrial applications.
Pinout
The M27C256B-10F1 is a 256-kilobit (32K x 8) ultraviolet erasable programmable read-only memory (EPROM). It comes in a 28-pin Dual In-line Package (DIP). The main functions of these pins are as follows:
1. Address Pins (A0-A14): 15 pins are used to address the memory locations, allowing access to 32K different locations.
2. Data Pins (Q0-Q7): 8 pins are used for data input/output, as this is an 8-bit device.
3. Chip Enable (E): This active-low pin must be low for the device to be selected and operate.
4. Output Enable (G): This active-low pin controls the data output buffers and must be low to read data.
5. Programming Voltage (Vpp): A special programming voltage is applied to this pin during the programming of the EPROM.
6. Power Supply (Vcc): Standard +5V power supply pin.
7. Ground (Vss): Ground reference pin.
The "-10F1" denotes the specific speed and package type, with "10" indicating 100ns access time.
1. Address Pins (A0-A14): 15 pins are used to address the memory locations, allowing access to 32K different locations.
2. Data Pins (Q0-Q7): 8 pins are used for data input/output, as this is an 8-bit device.
3. Chip Enable (E): This active-low pin must be low for the device to be selected and operate.
4. Output Enable (G): This active-low pin controls the data output buffers and must be low to read data.
5. Programming Voltage (Vpp): A special programming voltage is applied to this pin during the programming of the EPROM.
6. Power Supply (Vcc): Standard +5V power supply pin.
7. Ground (Vss): Ground reference pin.
The "-10F1" denotes the specific speed and package type, with "10" indicating 100ns access time.
Manufacturer
The M27C256B-10F1 is manufactured by STMicroelectronics. STMicroelectronics is a global semiconductor company that designs, develops, manufactures, and markets a broad range of products, including discrete and analog semiconductors, microcontrollers, MEMS (Micro-Electro-Mechanical Systems) devices, and sensors. It serves various markets, including automotive, industrial, personal electronics, computer, and communication equipment sectors. The company is known for its innovation and commitment to sustainability, with a focus on developing technologies that enhance efficiency and improve performance across different applications.
Application
The M27C256B-10F1 is a UV EPROM (Erasable Programmable Read-Only Memory) chip commonly used in various applications. It is suited for use in legacy systems, industrial equipment, and embedded systems where non-volatile memory storage is needed. Its primary application areas include firmware storage for microcontrollers, lookup tables, and bootloader programs. It is also utilized in telecommunications, automotive electronics, and instrumentation for storing critical software that needs to be stable across power cycles. Additionally, the M27C256B-10F1 is used in educational settings and hobbyist projects for learning about memory technologies and retro computing projects.
Package
The M27C256B-10F1 is an EPROM (Erasable Programmable Read-Only Memory) chip with a capacity of 256 kilobits. Its package type is a 28-pin Dual In-Line Package (DIP), suitable for through-hole mounting.
