Overview
The M27C801-100K1 is an 8 Mbit EPROM (Erasable Programmable Read-Only Memory) produced by STMicroelectronics. This device is available in two main types: UV (ultra violet erase) and OTP (one time programmable). It is organized as 1,048,576 by 8 bits, making it suitable for applications that require fast turn-around and pattern experimentation. The M27C801 is offered in various packages, including FDIP32W (window ceramic frit-seal package), PDIP32, and PLCC32, with the FDIP32W package featuring a transparent lid for UV erasure.
Key Specifications
| Parameter | Description | Value | Unit |
|---|---|---|---|
| Memory Size | 8 Mbit (1Mb x 8) | - | - |
| Supply Voltage (Read) | 5 V ± 10% | - | V |
| Access Time | 55 ns | - | ns |
| Active Current | 35 mA at 5 MHz | - | mA |
| Standby Current | 100 µA | - | µA |
| Programming Voltage | 12.75 V ± 0.25 V | - | V |
| Programming Time | 50 µs/word | - | µs |
| Ambient Operating Temperature | –40 to 125 °C | - | °C |
| Storage Temperature | –65 to 150 °C | - | °C |
Key Features
- Supply Voltage and Power Consumption: Operates at 5 V ± 10% in read mode with active current of 35 mA at 5 MHz and standby current of 100 µA.
- Programming Characteristics: Programming voltage of 12.75 V ± 0.25 V and programming time of 50 µs per word.
- Electronic Signature: Allows reading of a binary code to identify the manufacturer and device type.
- Package Options: Available in FDIP32W, PDIP32, and PLCC32 packages, with ECOPACK® options for environmental compliance.
- Operating Modes: Includes read mode, standby mode, and programming mode with specific control functions for each.
Applications
The M27C801 is ideally suited for applications where fast turn-around and pattern experimentation are crucial. This includes:
- Development and Prototyping: The UV erasable version allows for multiple programming and erasure cycles, making it ideal for development phases.
- Production: The OTP version is suitable for applications where the content is programmed only once and erasure is not required.
- Embedded Systems: Can be used in various embedded systems requiring non-volatile memory for storing firmware or data.
Q & A
- What is the memory size of the M27C801?
The M27C801 has a memory size of 8 Mbit, organized as 1,048,576 by 8 bits.
- What are the different package options available for the M27C801?
The M27C801 is available in FDIP32W, PDIP32, and PLCC32 packages, with ECOPACK® options for environmental compliance.
- What is the supply voltage for the M27C801 in read mode?
The supply voltage for the M27C801 in read mode is 5 V ± 10%.
- How long does it take to program a word in the M27C801?
The programming time for the M27C801 is 50 µs per word.
- What is the purpose of the Electronic Signature mode in the M27C801?
The Electronic Signature mode allows the reading of a binary code to identify the manufacturer and device type, useful for programming equipment to match the device with its corresponding programming algorithm.
- How does the standby mode affect the power consumption of the M27C801?
In standby mode, the supply current reduces from 35 mA to 100 µA.
- What are the temperature ranges for the M27C801?
The ambient operating temperature range is –40 to 125 °C, and the storage temperature range is –65 to 150 °C.
- Can the M27C801 be programmed in parallel with other devices?
Yes, the M27C801 can be programmed in parallel with other devices, with proper control of the Chip Enable (E) input.
- How is the M27C801 erased in the UV version?
The UV version of the M27C801 is erased by exposing the chip to ultraviolet light with wavelengths shorter than approximately 4000 Å.
- Is the M27C801 still in production?
No, the M27C801 is an obsolete product and is no longer manufactured...
