Overview
The M27C256B-15F1 is a 256Kbit Electrically Programmable Read-Only Memory (EPROM) IC produced by STMicroelectronics. This device is designed to provide non-volatile storage for data that needs to be retained even when power is turned off, making it ideal for applications requiring firmware or configuration storage. The EPROM features a high-speed access time of 150ns and operates within a voltage range of 4.5V to 5.5V. It is organized as 32,768 words of 8 bits each, making it suitable for microprocessor systems and various other applications where non-volatile memory is required.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Part Number | M27C256B-15F1 |
| Package/Case | PDIP28W, FDIP28W |
| Memory Type | EPROM - UV Erase |
| Memory Size | 256Kbit (32K x 8) |
| Access Time | 150ns |
| Operating Voltage | 4.5V ~ 5.5V |
| Programming Voltage | 12.75VDC |
| Temperature Range | 0°C to 70°C |
| Interface Type | Parallel |
| Mounting Style | Through Hole |
| Output Enable Access Time | 65ns |
Key Features
- High-speed access time of 150ns and output enable access time of 65ns.
- Non-volatile storage, retaining data even when power is turned off.
- UV erasable, allowing for erasure using ultraviolet light.
- Low power consumption with active current of 50mA and standby current of 100µA.
- Parallel interface for efficient data transfer.
- Ideal for microprocessor systems and applications requiring firmware or configuration storage.
Applications
The M27C256B-15F1 is versatile and can be used in a variety of applications, including:
- Microprocessor systems where non-volatile memory is required for storing firmware or configuration data.
- Embedded systems that need reliable and fast access to stored data.
- Industrial control systems where configuration and program instructions need to be stored securely.
- Consumer electronics that require non-volatile memory for settings and firmware storage.
Q & A
- Q: Can the M27C256B-15F1 be erased and reprogrammed?
A: No, the M27C256B-15F1 is an EPROM, which means it cannot be erased or reprogrammed electrically. It can be erased using ultraviolet light. - Q: Is it possible to store both program instructions and data in the M27C256B-15F1?
A: Yes, the M27C256B-15F1 can store both program instructions and data, making it versatile for various applications. - Q: What is the operating voltage range of the M27C256B-15F1?
A: The operating voltage range is 4.5V to 5.5V. - Q: What is the access time of the M27C256B-15F1?
A: The access time is 150ns. - Q: What is the programming voltage for the M27C256B-15F1?
A: The programming voltage is 12.75VDC. - Q: What is the temperature range for the M27C256B-15F1?
A: The temperature range is 0°C to 70°C. - Q: Can the M27C256B-15F1 be used in high-temperature environments?
A: Yes, it can operate up to 70°C. - Q: Is the M27C256B-15F1 suitable for low-power applications?
A: Yes, it has low power consumption with an active current of 50mA and a standby current of 100µA. - Q: What is the memory organization of the M27C256B-15F1?
A: It is organized as 32,768 words of 8 bits each. - Q: What type of interface does the M27C256B-15F1 use?
A: It uses a parallel interface.
