Overview
The M27C4002-90C1 is a 4 Mbit EPROM (Erasable Programmable Read-Only Memory) produced by STMicroelectronics. This device is available in two main ranges: UV (ultra violet erase) and OTP (one time programmable). It is organized as 262,144 words of 16 bits, making it ideal for microprocessor systems that require large programs. The M27C4002-90C1 is offered in various packages, including FDIP40W, PDIP40, PLCC44, and TSOP40, to cater to different application needs. The FDIP40W package features a transparent lid for UV erasure, while other packages are suitable for one-time programmable applications where erasure is not required.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Memory Size | 4 Mbit (256K x 16) | |
| Supply Voltage for Read Operations | 5V ± 10% | V |
| Access Time | 90ns | ns |
| Active Current at 10MHz | 70mA | mA |
| Standby Current | 100µA | µA |
| Programming Voltage | 12.75V ± 0.25V | V |
| Programming Time per Word | 100µs | µs |
| Ambient Operating Temperature | –40 to 125°C | °C |
| Storage Temperature | –65 to 150°C | °C |
Key Features
- Low Power Consumption: The device features low active and standby current, making it energy-efficient.
- Two-Line Output Control: This feature allows for efficient use in larger memory arrays, minimizing power dissipation and preventing output bus contention.
- Electronic Signature: The device provides a manufacturer code (20h) and device code (44h) for identification.
- ECOPACK® Packages: Available in lead-free packages that meet environmental requirements and comply with JEDEC standards.
- Various Packages: Offered in FDIP40W, PDIP40, PLCC44, and TSOP40 packages to suit different application needs.
Applications
The M27C4002-90C1 is ideally suited for microprocessor systems that require large programs. It is commonly used in:
- Embedded systems requiring significant program storage.
- Industrial control systems.
- Automotive electronics.
- Consumer electronics where non-volatile memory is necessary.
Q & A
- What is the memory size of the M27C4002-90C1?
The M27C4002-90C1 has a memory size of 4 Mbit, organized as 262,144 words of 16 bits.
- What are the different packages available for the M27C4002-90C1?
The device is available in FDIP40W, PDIP40, PLCC44, and TSOP40 packages.
- What is the access time of the M27C4002-90C1?
The access time is 90ns.
- What is the programming voltage for the M27C4002-90C1?
The programming voltage is 12.75V ± 0.25V.
- How long does it take to program one word in the M27C4002-90C1?
It takes 100µs to program one word.
- What is the standby current of the M27C4002-90C1?
The standby current is 100µA.
- Does the M27C4002-90C1 support electronic signature?
Yes, it provides a manufacturer code (20h) and device code (44h) for identification.
- What are the environmental benefits of the ECOPACK® packages?
The ECOPACK® packages are lead-free and comply with JEDEC standards, making them environmentally friendly.
- What are the typical applications of the M27C4002-90C1?
It is commonly used in embedded systems, industrial control systems, automotive electronics, and consumer electronics where non-volatile memory is necessary.
- How do you put the M27C4002-90C1 into standby mode?
The device is placed in standby mode by applying a CMOS high signal to the E input.
