Overview
The M27C256B-15B1 is a high-speed 256 Kbit UV erasable and electrically programmable EPROM (Erasable Programmable Read-Only Memory) produced by STMicroelectronics. This device is ideally suited for microprocessor systems and is organized as 32,768 by 8 bits. It is available in various package types, including Window Ceramic Frit-Seal Dual-in-Line, Plastic Dual-in-Line, Plastic Leaded Chip Carrier, and Plastic Thin Small Outline packages. The EPROM can be erased using ultraviolet light and reprogrammed following the specified programming procedure.
Key Specifications
| Parameter | Value |
|---|---|
| Memory Size | 256 Kbit (32K x 8) |
| Access Time | 150ns |
| Programming Voltage | 12.75V |
| Active Current | 30mA |
| Standby Current | 100µA |
| Programming Time | Around 3 seconds (PRESTO II algorithm) |
| Package Types | Window Ceramic Frit-Seal Dual-in-Line, Plastic Dual-in-Line, Plastic Leaded Chip Carrier, Plastic Thin Small Outline |
| Temperature Range | 0 to 70 °C, –40 to 125 °C, –40 to 85 °C, –40 to 105 °C (depending on the package) |
Key Features
- High-speed access time of 150ns
- UV erasable and electrically programmable
- Low power consumption with active current of 30mA and standby current of 100µA
- Electronic signature for automated programming
- Available in various package types to suit different application needs
- Ideal for microprocessor systems
Applications
The M27C256B-15B1 is suitable for a variety of applications, particularly in microprocessor systems. It can be used in:
- Embedded systems requiring programmable memory
- Industrial control systems
- Automotive electronics
- Consumer electronics
- Any application requiring non-volatile, programmable memory
Q & A
- What is the memory size of the M27C256B-15B1?
The memory size is 256 Kbit, organized as 32,768 by 8 bits.
- What is the access time of the M27C256B-15B1?
The access time is 150ns.
- How is the M27C256B-15B1 erased?
The device can be erased using ultraviolet light.
- What is the programming voltage for the M27C256B-15B1?
The programming voltage is 12.75V.
- What are the typical programming times for the M27C256B-15B1?
The programming times are around 3 seconds using the PRESTO II algorithm.
- What are the available package types for the M27C256B-15B1?
The device is available in Window Ceramic Frit-Seal Dual-in-Line, Plastic Dual-in-Line, Plastic Leaded Chip Carrier, and Plastic Thin Small Outline packages.
- What is the power consumption of the M27C256B-15B1?
The active current is 30mA, and the standby current is 100µA.
- Is the M27C256B-15B1 still in production?
No, the M27C256B-15B1 is obsolete and no longer manufactured.
- What are some common applications for the M27C256B-15B1?
It is commonly used in microprocessor systems, embedded systems, industrial control systems, automotive electronics, and consumer electronics.
- What temperature ranges are supported by the M27C256B-15B1?
The device supports temperature ranges of 0 to 70 °C, –40 to 125 °C, –40 to 85 °C, and –40 to 105 °C depending on the package type.
