Overview
The M27C4002-12C1 is a 4 Mbit EPROM (Erasable Programmable Read-Only Memory) produced by STMicroelectronics. It is available in two main types: UV (ultra violet erase) and OTP (one time programmable). This device is ideally suited for microprocessor systems that require large programs and is organized as 262,144 words of 16 bits. The M27C4002-12C1 is offered in various packages, including PLCC44, which is a 44-pin plastic leaded chip carrier, making it versatile for different application needs.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Memory Type | OTP EPROM | |
| Memory Size | 4 Mbit (256K x 16) | |
| Access Time | 120ns | |
| Interface | Parallel | |
| Supply Voltage | 4.5V ~ 5.5V | V |
| Operating Temperature | 0°C ~ 70°C | °C |
| Package / Case | 44-PLCC | |
| Pin Count | 44 | |
| Mounting | Surface Mount | |
| Active Current | 70mA at 10MHz | |
| Standby Current | 100µA | |
| Programming Voltage | 12.75V ± 0.25V | V |
| Programming Time | 100µs/word |
Key Features
- Low Power Consumption: The device features low active and standby current, with an active current of 70mA at 10MHz and a standby current of 100µA.
- Two-Line Output Control: This feature allows for efficient use in larger memory arrays, ensuring low power dissipation and preventing output bus contention.
- Electronic Signature: The device supports an Electronic Signature mode to identify the manufacturer and device type, useful for programming equipment.
- ECOPACK® Packages: Available in lead-free and RoHS-compliant packages, meeting environmental requirements.
- Programming and Erase Capabilities: Supports both UV erase and OTP programming, with a programming voltage of 12.75V ± 0.25V and a programming time of 100µs/word.
Applications
The M27C4002-12C1 is designed for use in microprocessor systems that require large programs. It is suitable for various applications including:
- Embedded Systems: Ideal for systems needing non-volatile memory for program storage.
- Industrial Control Systems: Used in control systems where program data needs to be stored securely.
- Consumer Electronics: Suitable for devices requiring firmware storage.
- Automotive Systems: Used in automotive electronics for storing program data.
Q & A
- What is the memory size of the M27C4002-12C1?
The memory size is 4 Mbit, organized as 256K x 16 bits.
- What are the operating temperature ranges for the M27C4002-12C1?
The operating temperature range is from 0°C to 70°C.
- What is the access time of the M27C4002-12C1?
The access time is 120ns.
- What are the supply voltage requirements for the M27C4002-12C1?
The supply voltage is 4.5V to 5.5V.
- Does the M27C4002-12C1 support in-system programming?
No, it does not support in-system programming; it is externally programmable.
- What is the standby current of the M27C4002-12C1?
The standby current is 100µA.
- What is the programming voltage for the M27C4002-12C1?
The programming voltage is 12.75V ± 0.25V.
- Is the M27C4002-12C1 available in lead-free packages?
- How does the two-line output control function work?
The two-line output control uses Chip Enable (E) and Output Enable (G) to manage device selection and data output, ensuring low power dissipation and preventing output bus contention.
- What is the Electronic Signature mode used for?
The Electronic Signature mode is used to identify the manufacturer and device type, which is useful for programming equipment.
