Overview
The M27C322-100F1 is a 32 Mbit EPROM (Erasable Programmable Read-Only Memory) manufactured by STMicroelectronics. It is part of the UV range, meaning it can be erased using ultraviolet light. This device is particularly suited for microprocessor systems that require large data or program storage. The M27C322 is organized as 2 MWords of 16 bits, making it compatible with 32 Mbit Mask ROM configurations. It features a word-wide organization and is available in various packages, including the FDIP42W (window ceramic frit-seal package).
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Capacity | 32 Mbit (2 MWords x 16 bits) | 32 Mbit |
| Supply Voltage | Read Operation | 5V ± 10% |
| Access Time | Read Mode | 80 ns (for -100 speed class), 100 ns (for other speed classes) |
| Programming Voltage | VPP | 12V ± 0.25V |
| Programming Time | Per Word | 50 µs |
| Active Current | At 5 MHz | 50 mA |
| Standby Current | CMOS High on E Input | 100 µA |
| Operating Temperature Range | 0°C to +70°C, -40°C to +85°C, -40°C to +125°C | |
| Storage Temperature Range | -65°C to +150°C |
Key Features
- Word-Wide Organization: The M27C322 is organized as 2 MWords of 16 bits, making it compatible with 32 Mbit Mask ROM configurations.
- Low Power Consumption: Active current of 50 mA at 5 MHz and standby current of 100 µA when E input is at CMOS high level.
- Two-Line Output Control: Features a two-line control function to accommodate multiple memory connections, reducing power dissipation and preventing output bus contention.
- Electronic Signature: Allows the reading of a binary code to identify the manufacturer and device type, useful for programming equipment.
- On-Board Programming: Can be directly programmed in the application circuit.
- UV Erasable: Can be erased using ultraviolet light, with erasure beginning when cells are exposed to light with wavelengths shorter than approximately 4000 Å.
Applications
The M27C322-100F1 is ideally suited for microprocessor systems that require large data or program storage. It is commonly used in various applications such as:
- Embedded Systems: For storing firmware or application code in embedded systems.
- Industrial Control Systems: For storing control programs and data in industrial control environments.
- Automotive Systems: For storing software and data in automotive electronic control units.
- Consumer Electronics: For storing firmware in consumer electronic devices.
Q & A
- What is the capacity of the M27C322-100F1 EPROM?
The M27C322-100F1 has a capacity of 32 Mbit, organized as 2 MWords of 16 bits.
- What is the supply voltage for the M27C322-100F1 in read operation?
The supply voltage is 5V ± 10%.
- What is the access time for the M27C322-100F1?
The access time is 80 ns for the -100 speed class and 100 ns for other speed classes.
- How is the M27C322-100F1 erased?
The M27C322-100F1 is erased using ultraviolet light with wavelengths shorter than approximately 4000 Å.
- What is the programming voltage for the M27C322-100F1?
The programming voltage (VPP) is 12V ± 0.25V.
- What is the standby current of the M27C322-100F1?
The standby current is 100 µA when the E input is at CMOS high level.
- Can the M27C322-100F1 be programmed on-board?
Yes, the M27C322-100F1 can be directly programmed in the application circuit.
- What is the electronic signature feature of the M27C322-100F1?
The electronic signature feature allows the reading of a binary code to identify the manufacturer and device type.
- What are the operating temperature ranges for the M27C322-100F1?
The operating temperature ranges are 0°C to +70°C, -40°C to +85°C, and -40°C to +125°C.
- What is the storage temperature range for the M27C322-100F1?
The storage temperature range is -65°C to +150°C.
