Overview
The M27C256B-10F1 is a 256 Kbit (32K x 8) UV-erasable and one-time programmable (OTP) EPROM manufactured by STMicroelectronics. This device is designed for microprocessor systems and offers non-volatile storage of program code or data. It is available in various packages, including FDIP28W, PDIP28, and PLCC32, to cater to different application needs. The FDIP28W package features a transparent lid for UV erasure, while the PDIP28 and PLCC32 packages are suitable for applications where the content is programmed only once and erasure is not required. The M27C256B-10F1 also meets environmental standards with its ECOPACK® lead-free packaging.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Memory Size | 256 Kbit (32K x 8) | |
| Supply Voltage | 5V ± 10% | V |
| Access Time | 100 ns | ns |
| Output Enable Access Time | 50 ns | ns |
| Programming Voltage | 12.75V ± 0.25V | V |
| Programming Time | 100 µs/Word | µs |
| Active Current | 30 mA at 5 MHz | mA |
| Standby Current | 100 µA | µA |
| Operating Temperature Range | -40°C to +70°C | °C |
| Package Types | FDIP28W, PDIP28, PLCC32 |
Key Features
- UV Erasable and OTP Options: Available in UV-erasable and one-time programmable versions to suit different application needs.
- Low Power Consumption: Active current of 30 mA at 5 MHz and standby current of 100 µA, reducing power dissipation.
- Two-Line Output Control: Features Chip Enable (E) and Output Enable (G) for efficient memory selection and low power standby mode.
- ECOPACK® Packaging: Lead-free packaging compliant with environmental standards and JEDEC Standard JESD97.
- Electronic Signature: Manufacturer Code: 20h, Device Code: 8Dh for identification.
Applications
The M27C256B-10F1 is commonly used in various circuits and systems where non-volatile storage of program code or data is required. Typical applications include:
- Microprocessor Systems: Ideal for storing program code or data in microprocessor-based systems.
- Embedded Systems: Suitable for embedded systems requiring non-volatile memory.
- Industrial Control Systems: Used in industrial control systems for reliable data storage.
- Consumer Electronics: Can be used in consumer electronics for storing firmware or configuration data.
Q & A
- What is the memory size of the M27C256B-10F1?
The M27C256B-10F1 has a memory size of 256 Kbit, organized as 32K x 8 bits.
- What are the different package types available for the M27C256B-10F1?
The M27C256B-10F1 is available in FDIP28W, PDIP28, and PLCC32 packages.
- What is the access time of the M27C256B-10F1?
The access time of the M27C256B-10F1 is 100 ns.
- What is the programming voltage for the M27C256B-10F1?
The programming voltage for the M27C256B-10F1 is 12.75V ± 0.25V.
- How does the two-line output control function work?
The two-line output control uses Chip Enable (E) and Output Enable (G) to manage memory selection and reduce power dissipation. E is used for device selection, and G is used to gate data to the output pins.
- What is the standby current of the M27C256B-10F1?
The standby current of the M27C256B-10F1 is 100 µA.
- Is the M27C256B-10F1 lead-free?
Yes, the M27C256B-10F1 is available in ECOPACK® lead-free packaging.
- What are the operating temperature ranges for the M27C256B-10F1?
The operating temperature range for the M27C256B-10F1 is -40°C to +70°C.
- How is the M27C256B-10F1 typically connected in a circuit?
The address lines (A0-A15) and data lines (D0-D7) are connected to the corresponding lines of a microcontroller or other control circuit. The output enable (/OE) and chip enable (/CE) lines are controlled by the microcontroller to select and read from the EPROM.
- What is the purpose of the transparent lid in the FDIP28W package?
The transparent lid in the FDIP28W package allows the user to expose the chip to ultraviolet light for erasure.
