Overview
The M27C1001-45XB1 is a 1 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 ideally suited for microprocessor systems that require large programs and is organized as 131,072 words of 8 bits. The M27C1001 is offered in various packages, including FDIP32W, PDIP32, PLCC32, and TSOP32, to cater to different application needs. The UV EPROM version features a transparent lid that allows the chip to be exposed to ultraviolet light for erasure, while the OTP version is programmed only once and does not require erasure.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Capacity | 1 Mbit (128 Kbit x 8) | |
| Supply Voltage in Read Operation | 5V ± 10% | V |
| Access Time | 45ns (for -45 version) | 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 |
| Electronic Signature | Manufacturer Code: 20h, Device Code: 05h |
Key Features
- Low power consumption with active current of 30 mA at 5 MHz and standby current of 100 µA.
- Fast access time of 45ns for the -45 version.
- Programming voltage of 12.75V ± 0.25V and programming time of 100 µs per word.
- Electronic Signature mode for identifying the manufacturer and device type.
- Available in various packages including FDIP32W, PDIP32, PLCC32, and TSOP32.
- ECOPACK® packages available, which are lead-free and comply with environmental requirements.
Applications
The M27C1001 is ideally suited for microprocessor systems that require large programs. It is commonly used in applications such as:
- Embedded systems requiring non-volatile memory for program storage.
- Industrial control systems where program changes are infrequent.
- Automotive and aerospace systems where reliability and durability are critical.
- Consumer electronics that need secure and stable program storage.
Q & A
- What is the capacity of the M27C1001 EPROM?
The M27C1001 has a capacity of 1 Mbit, organized as 131,072 words of 8 bits.
- What are the different package types available for the M27C1001?
The M27C1001 is available in FDIP32W, PDIP32, PLCC32, and TSOP32 packages.
- How is the M27C1001 programmed?
The M27C1001 is programmed by applying a programming voltage of 12.75V ± 0.25V and pulsing the P input with E at VIL. Data is introduced by selectively programming '0's into the desired bit locations.
- What is the purpose of the Electronic Signature mode?
The Electronic Signature mode allows the reading out of a binary code that identifies the manufacturer and device type, useful for programming equipment to match the device with its corresponding programming algorithm.
- How is the UV EPROM version of the M27C1001 erased?
The UV EPROM version is erased by exposing the chip to ultraviolet light with a wavelength of 2537 Å. The recommended erasure procedure involves an integrated dose of at least 15 W-sec/cm2 for 15 to 20 minutes).
- What are the standby and active current consumption values for the M27C1001?
The standby current is 100 µA, and the active current at 5 MHz is 30 mA).
- What is the access time for the M27C1001-45XB1?
The access time for the -45 version is 45ns).
- Is the M27C1001 available in lead-free packages?
- What are the operating temperature ranges for the M27C1001?
- Can multiple M27C1001 devices be programmed in parallel?
