Overview
The M27C4001-70C1 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 524,288 by 8 bits. The M27C4001 is offered in various packages, including FDIP32W, PDIP32, PLCC32, and TSOP32, with ECOPACK® compliant versions available to meet environmental requirements.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Memory Capacity | 4 Mbit (512Kb x 8) | |
| Supply Voltage in Read Operation | 5V ± 10% | V |
| Access Time | 35ns | ns |
| Active Current at 5MHz | 30mA | mA |
| Standby Current | 100µA | µA |
| Programming Voltage | 12.75V ± 0.25V | V |
| Programming Time per Word | 100µs | µs |
| Electronic Signature | Manufacturer Code: 20h, Device Code: 41h | |
| Packages | FDIP32W, PDIP32, PLCC32, TSOP32 |
Key Features
- Low Power Consumption: Active current of 30mA at 5MHz and standby current of 100µA.
- Fast Access Time: 35ns access time for quick data retrieval.
- Programming and Erase Capabilities: Programmable with a voltage of 12.75V ± 0.25V and erasable using ultraviolet light for UV versions.
- Electronic Signature: Allows identification of the manufacturer and device type through a binary code.
- Two-Line Output Control: Features Chip Enable (E) and Output Enable (G) for efficient memory management and low power dissipation.
- ECOPACK Compliant: Available in lead-free packages to meet environmental requirements.
Applications
The M27C4001 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 programmable memory is necessary.
Q & A
- What is the memory capacity of the M27C4001?
The M27C4001 has a memory capacity of 4 Mbit, organized as 524,288 by 8 bits.
- What are the supply voltage requirements for the M27C4001 in read operation?
The supply voltage in read operation is 5V ± 10%.
- What is the access time of the M27C4001?
The access time is 35ns.
- How much current does the M27C4001 consume in active and standby modes?
The active current at 5MHz is 30mA, and the standby current is 100µA.
- What is the programming voltage and time for the M27C4001?
The programming voltage is 12.75V ± 0.25V, and the programming time per word is 100µs.
- How does the electronic signature feature work?
The electronic signature allows the reading of a binary code that identifies the manufacturer and device type. For the M27C4001, the manufacturer code is 20h and the device code is 41h.
- What packages are available for the M27C4001?
The M27C4001 is available in FDIP32W, PDIP32, PLCC32, and TSOP32 packages.
- What is the purpose of the Chip Enable (E) and Output Enable (G) pins?
The Chip Enable (E) is the power control for device selection, and the Output Enable (G) is the output control to gate data to the output pins.
- How does the standby mode reduce power consumption?
The standby mode reduces the supply current from 30mA to 100µA by applying a CMOS high signal to the E input.
- Is the M27C4001 environmentally friendly?
