Overview
The M27C4001-12B1, produced by STMicroelectronics, is a 4 Mbit EPROM available in two ranges: UV (ultra violet erase) and OTP (one time programmable). This device is organized as 524,288 by 8 bits, making it ideal for microprocessor systems that require large programs. The EPROM is offered in various packages, including FDIP32W, PDIP32, PLCC32, and TSOP32, with ECOPACK® compliant versions that are lead-free and meet environmental requirements.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Memory Size | 4 Mbit (512K x 8) | 524,288 x 8 bits |
| Supply Voltage | Read operation | 5V ± 10% |
| Access Time | 35ns | |
| Active Current | At 5MHz | 30mA |
| Standby Current | 100µA | |
| Programming Voltage | 12.75V ± 0.25V | |
| Programming Time | Per word | 100µs |
| Packages | FDIP32W, PDIP32, PLCC32, TSOP32 | |
| Electronic Signature | Manufacturer Code / Device Code | 20h / 41h |
Key Features
- Low Power Consumption: Active current of 30mA at 5MHz and standby current of 100µA.
- Two-Line Output Control: Features a two-line control function to minimize memory power dissipation and prevent output bus contention.
- Electronic Signature: Allows reading of a binary code to identify the manufacturer and device type.
- ECOPACK Compliant: Lead-free packages that meet environmental requirements.
- Standby Mode: Reduces supply current to 100µA by applying a CMOS high signal to the E input.
Applications
The M27C4001-12B1 is ideally suited for microprocessor systems that require large programs. It is commonly used in applications such as:
- Embedded systems requiring significant program storage.
- Industrial control systems.
- Automotive electronics.
- Consumer electronics needing non-volatile memory.
Q & A
- What is the memory size of the M27C4001-12B1?
The M27C4001-12B1 has a memory size of 4 Mbit, organized as 524,288 by 8 bits.
- What are the different package options available for the M27C4001-12B1?
The device is available in FDIP32W, PDIP32, PLCC32, and TSOP32 packages.
- What is the supply voltage for the read operation of the M27C4001-12B1?
The supply voltage for the read operation is 5V ± 10%.
- What is the access time of the M27C4001-12B1?
The access time is 35ns.
- How does the standby mode reduce power consumption in the M27C4001-12B1?
The standby mode reduces the supply current from 30mA to 100µA by applying a CMOS high signal to the E input.
- What is the programming voltage and time for the M27C4001-12B1?
The programming voltage is 12.75V ± 0.25V, and the programming time is 100µs per word.
- What is the electronic signature feature of the M27C4001-12B1?
The electronic signature feature allows reading of a binary code to identify the manufacturer and device type, with codes 20h for the manufacturer and 41h for the device.
- Are the packages of the M27C4001-12B1 environmentally friendly?
- How does the two-line output control function work in the M27C4001-12B1?
The two-line control function uses Chip Enable (E) and Output Enable (G) to minimize memory power dissipation and prevent output bus contention.
- What is the purpose of the transparent lid in the FDIP32W package?
The transparent lid in the FDIP32W package allows the user to expose the chip to ultraviolet light for erasing the bit pattern.
