사양
| 속성 | 가치 |
| Package | Tube |
| ProductStatus | Active |
| MemoryType | Non-Volatile |
| MemoryFormat | EEPROM |
| Technology | EEPROM |
| MemorySize | 256Kb (32K x 8) |
| MemoryInterface | Parallel |
| WriteCycleTime-WordPage | 10ms |
| AccessTime | 150 ns |
| Voltage-Supply | 4.5V ~ 5.5V |
| OperatingTemperature | -40°C ~ 85°C (TC) |
| MountingType | Through Hole |
| Package/Case | 28-DIP (0.600, 15.24mm) |
개요
Description
The AT28C256-15PU is a 256-Kilobit (32K x 8) Parallel EEPROM (Electrically Erasable Programmable Read-Only Memory) designed for data storage in a range of electronic applications. It features a 5V power supply, making it compatible with standard systems. One of its key attributes is the 150 ns access time, ensuring quick read and write operations. The EEPROM is organized into 32,768 words of 8 bits each, offering high-density storage.
With a robust endurance of 100,000 write cycles and a data retention period of 10 to 20 years, it is reliable for both frequent updates and long-term storage. The device supports byte-level or entire chip erasure, and it allows for in-circuit programming, which is convenient for development and prototyping environments. It includes features like data polling and toggle bit for acknowledging the completion of write operations, enhancing operational efficiency. Housed in a 28-pin Dual In-line Package (DIP), it's suitable for various embedded applications, including industrial control, instrumentation, and consumer electronics.
With a robust endurance of 100,000 write cycles and a data retention period of 10 to 20 years, it is reliable for both frequent updates and long-term storage. The device supports byte-level or entire chip erasure, and it allows for in-circuit programming, which is convenient for development and prototyping environments. It includes features like data polling and toggle bit for acknowledging the completion of write operations, enhancing operational efficiency. Housed in a 28-pin Dual In-line Package (DIP), it's suitable for various embedded applications, including industrial control, instrumentation, and consumer electronics.
Equivalent
The AT28C256-15PU is a 256Kb (32K x 8) parallel EEPROM. Equivalent products include:
1. Microchip 28C256 series
2. STMicroelectronics M28C256
3. Catalyst Semiconductor CAT28C256
4. ISSI IS28C256
5. Xicor X28C256
These alternatives offer similar storage capacity and parallel EEPROM functionality, but always check the specific datasheets for exact compatibility regarding speed, voltage, and package type.
1. Microchip 28C256 series
2. STMicroelectronics M28C256
3. Catalyst Semiconductor CAT28C256
4. ISSI IS28C256
5. Xicor X28C256
These alternatives offer similar storage capacity and parallel EEPROM functionality, but always check the specific datasheets for exact compatibility regarding speed, voltage, and package type.
Features
The AT28C256-15PU is a 32K x 8 electrically erasable and programmable read-only memory (EEPROM). Key features include:
1. Capacity: 256 Kb organized as 32,768 x 8 bits.
2. Speed: Fast access time of 150 ns.
3. Endurance: Supports over 100,000 write/erase cycles per byte.
4. Data Retention: Retains data for a minimum of 10 years without power.
5. Voltage: Operates on a single 5V supply.
6. Interface: Uses a parallel interface for data transfer.
7. Programming: Byte-level write capability, allowing for flexible data updates.
8. Sector Write Protection: Allows for protection against inadvertent writes.
9. Low Power Consumption: Features low standby and active power consumption.
10. Package: Available in a 28-pin PDIP (Plastic Dual Inline Package).
11. Safety: Includes hardware and software data protection features.
These features make the AT28C256-15PU suitable for applications that require non-volatile storage with frequent updates, such as firmware storage, configuration data, and other embedded system uses.
1. Capacity: 256 Kb organized as 32,768 x 8 bits.
2. Speed: Fast access time of 150 ns.
3. Endurance: Supports over 100,000 write/erase cycles per byte.
4. Data Retention: Retains data for a minimum of 10 years without power.
5. Voltage: Operates on a single 5V supply.
6. Interface: Uses a parallel interface for data transfer.
7. Programming: Byte-level write capability, allowing for flexible data updates.
8. Sector Write Protection: Allows for protection against inadvertent writes.
9. Low Power Consumption: Features low standby and active power consumption.
10. Package: Available in a 28-pin PDIP (Plastic Dual Inline Package).
11. Safety: Includes hardware and software data protection features.
These features make the AT28C256-15PU suitable for applications that require non-volatile storage with frequent updates, such as firmware storage, configuration data, and other embedded system uses.
Pinout
The AT28C256-15PU is a 32K x 8 (256 Kbit) EEPROM manufactured by Microchip Technology. It comes in a PDIP (Plastic Dual In-line Package) with 28 pins. Here is a concise overview of its pin functions:
1. A0-A14: Address inputs (15 pins), used to select one of the 32,768 bytes of memory.
2. I/O0-I/O7: Data inputs/outputs (8 pins), used for data transfer.
3. CE: Chip Enable (active low). Enables the device when low.
4. OE: Output Enable (active low). Enables the data output buffers when low.
5. WE: Write Enable (active low). Allows writing to the memory when low.
6. VCC: Power supply. Typically +5V.
7. GND: Ground.
The AT28C256 is commonly used in applications requiring non-volatile data storage. It supports byte-level read and write operations and has a fast access time, making it suitable for use in embedded systems, firmware storage, and other applications where data retention is required without power.
1. A0-A14: Address inputs (15 pins), used to select one of the 32,768 bytes of memory.
2. I/O0-I/O7: Data inputs/outputs (8 pins), used for data transfer.
3. CE: Chip Enable (active low). Enables the device when low.
4. OE: Output Enable (active low). Enables the data output buffers when low.
5. WE: Write Enable (active low). Allows writing to the memory when low.
6. VCC: Power supply. Typically +5V.
7. GND: Ground.
The AT28C256 is commonly used in applications requiring non-volatile data storage. It supports byte-level read and write operations and has a fast access time, making it suitable for use in embedded systems, firmware storage, and other applications where data retention is required without power.
Manufacturer
The AT28C256-15PU is manufactured by Microchip Technology Inc. This company specializes in the production of microcontroller and integrated circuits, as well as related solutions and technologies. Microchip Technology is known for providing a wide range of semiconductor products that are used in various electronic applications. They cater to industries such as automotive, industrial, communications, consumer electronics, and computing. The AT28C256-15PU itself is an EEPROM, which stands for Electrically Erasable Programmable Read-Only Memory, and is used in systems that require non-volatile memory storage.
Application
The AT28C256-15PU is an EEPROM chip commonly used in applications requiring non-volatile storage. Key areas include embedded systems for firmware storage, microcontroller-based designs for data logging, and storing configuration parameters in industrial equipment. It's also used in telecommunications for storing program code and lookup tables. In computing, it can be employed in legacy systems for BIOS storage. Its non-volatile nature makes it suitable for applications needing data retention without power, and its ease of reprogramming supports scenarios where data updates are frequent. Additionally, it's used in educational environments for teaching memory concepts and programming practices.
Package
The AT28C256-15PU is an EEPROM chip produced by Microchip Technology. It comes in a 28-pin PDIP (Plastic Dual In-line Package), which is a through-hole package type commonly used for prototyping and production in electronic projects.
