Overview
The M27C1001-70B1 is a 1 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 131,072 words of 8 bits, making it suitable for microprocessor systems that require large programs.
The M27C1001-70B1 is offered in various packages, including FDIP32W (window ceramic frit-seal package), PDIP32, PLCC32, and TSOP32. The UV EPROM version features a transparent lid for erasure using ultraviolet light, while the OTP version is used for applications where the content is programmed only once and erasure is not required.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Capacity | 1 Mbit (128 Kbit x 8) | |
| Supply Voltage in Read Operation | 5V ± 10% | V |
| Access Time | 70 ns | ns |
| Active Current at 5 MHz | 30 mA | mA |
| Standby Current | 100 µA | µA |
| Programming Voltage | 12.75V ± 0.25V | V |
| Programming Time per Word | 100 µs | µs |
| Ambient Operating Temperature | –40 to 125 °C | °C |
| Storage Temperature | –65 to 150 °C | °C |
Key Features
- Low power consumption with active current of 30 mA at 5 MHz and standby current of 100 µA.
- Fast access time of 70 ns.
- Electronic Signature mode for identifying the manufacturer and device type.
- Available in ECOPACK® packages, which are lead-free and comply with environmental requirements.
- Multiple package options including FDIP32W, PDIP32, PLCC32, and TSOP32.
- UV EPROM version can be erased using ultraviolet light with a wavelength of 2537 Å.
Applications
The M27C1001-70B1 is ideally suited for microprocessor systems that require large programs. It is commonly used in various applications such as:
- Embedded systems requiring non-volatile memory.
- Industrial control systems.
- Automotive electronics.
- Consumer electronics where firmware storage is necessary.
Q & A
- What is the capacity of the M27C1001-70B1?
The M27C1001-70B1 has a capacity of 1 Mbit, organized as 131,072 words of 8 bits.
- What are the different package options available for the M27C1001-70B1?
The device is available in FDIP32W, PDIP32, PLCC32, and TSOP32 packages.
- How is the UV EPROM version of the M27C1001-70B1 erased?
The UV EPROM version is erased using ultraviolet light with a wavelength of 2537 Å. The recommended erasure procedure involves exposure to this light for approximately 15 to 20 minutes.
- What is the access time of the M27C1001-70B1?
The access time of the M27C1001-70B1 is 70 ns.
- What is the programming voltage and time for the M27C1001-70B1?
The programming voltage is 12.75V ± 0.25V, and the programming time per word is 100 µs.
- Does the M27C1001-70B1 support Electronic Signature mode?
Yes, the M27C1001-70B1 supports Electronic Signature mode, which allows the device to be identified by its manufacturer and type.
- What are the standby and active current consumption values of the M27C1001-70B1?
The standby current is 100 µA, and the active current at 5 MHz is 30 mA.
- Is the M27C1001-70B1 available in lead-free packages?
Yes, the M27C1001-70B1 is available in ECOPACK® packages, which are lead-free and comply with environmental requirements.
- What is the operating temperature range of the M27C1001-70B1?
The ambient operating temperature range is –40 to 125 °C.
- How does the M27C1001-70B1 handle parallel programming?
Parallel programming of multiple M27C1001 devices is possible by ensuring that all like inputs, except for the Chip Enable (E), are common. A TTL low level pulse applied to the P input with E low and VPP at 12.75V will program the selected device while inhibiting others.
