Overview
The M27C4001-12C1 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 particularly suited for microprocessor systems that require large program storage and is organized as 524,288 by 8 bits.
The M27C4001-12C1 is offered in various packages, including FDIP32W (window ceramic frit-seal package), PDIP32, PLCC32, and TSOP32 (8 x 20 mm), with ECOPACK® compliant versions that are lead-free and meet environmental requirements.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Memory Type | Non-Volatile EPROM | |
| Memory Size | 4 Mbit | |
| Memory Organization | 512K 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 |
| Ambient Operating Temperature | –40 to 125 °C | °C |
| Storage Temperature | –65 to 150 °C | °C |
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 Flexibility: Supports both UV erase and OTP programming.
- Electronic Signature: Allows for the reading of a binary code to identify the manufacturer and device type.
- Two-Line Output Control: Features a two-line control function to minimize memory power dissipation and prevent output bus contention.
- ECOPACK Compliant: Available in lead-free packages that meet environmental requirements.
Applications
The M27C4001-12C1 is ideally suited for microprocessor systems that require large program storage. It is commonly used in:
- Embedded systems requiring non-volatile memory.
- Industrial control systems.
- Automotive electronics.
- Consumer electronics where program storage is critical.
Q & A
- What is the memory size of the M27C4001-12C1?
The memory size is 4 Mbit, organized as 512K x 8 bits.
- What are the types of programming supported by the M27C4001-12C1?
The device supports both UV (ultra violet erase) and OTP (one time programmable) types of programming.
- What is the access time of the M27C4001-12C1?
The access time is 35ns.
- What is the standby current of the M27C4001-12C1?
The standby current is 100µA.
- What is the programming voltage for the M27C4001-12C1?
The programming voltage is 12.75V ± 0.25V.
- How is the electronic signature mode activated?
The electronic signature mode is activated by forcing 11.5V to 12.5V on address line A9 with VPP = VCC = 5V.
- What are the package options available for the M27C4001-12C1?
The device is available in FDIP32W, PDIP32, PLCC32, and TSOP32 (8 x 20 mm) packages.
- Is the M27C4001-12C1 lead-free?
Yes, the ECOPACK compliant versions are lead-free.
- What is the operating temperature range for the M27C4001-12C1?
The ambient operating temperature range is –40 to 125 °C.
- How does the two-line output control function work?
The two-line control function uses Chip Enable (E) and Output Enable (G) to minimize memory power dissipation and prevent output bus contention.
