AT49F001T-70PI

AT49F001T-70PI is a 64/70-Kbit Electrically Erasable and Programmable Read-Only Memory (EEPROM) designed specifically for automotive, industrial, and power applications. It combines a fast erase function, good Program/Erase Endurance, and Option Bytes to provide a solution for applications requiring the highest level of reliability and security. This type of EEPROM is particularly suitable for read-only applications in which reprogramming is only necessary for specific events and conditions.

Application Field

The AT49F001T-70PI provides a rich set of features that make it suitable for a wide range of applications. It is particularly well suited for automotive applications, such as engine-control systems, power-steering components, ABS systems, and vehicle security systems. It can also be used in a variety of industrial applications, such as remote controls, pumps, valves, and alarms.

The AT49F001T-70PI is also well suited for applications with low power consumption requirements, as it has a fast erase operation, allowing for quick reprogramming. Additionally, the device is designed to survive in harsh environmental conditions, making it suitable for usage in extreme temperatures.

Working Principle

The AT49F001T-70PI is an EEPROM that is composed of 16Kbits of non-volatile memory. The memory is divided into 256 Pages, each containing 64 bytes of memory. A single byte of memory is composed of 8bits of data, which can each be individually addressed and read from or written to. Additionally, the device has a Security Bit, Lock Bit, and Option Bytes, which can be used to control access and usage of the memory.

The AT49F001T-70PI is based on the traditional AND/OR structure for EEPROMs. In this architecture, an AND gate is used to rewrite the memory cell, and an OR gate is used to read the memory cell. To erase a memory cell, the voltage on the AND gate is raised and the voltage on the OR gate is lowered, resulting in the cell being reset to a logical “0”. To program a memory cell, the voltage on the AND gate is lowered and the voltage on the OR gate is raised, resulting in the cell being set to a logical “1”.

The AT49F001T-70PI supports five operating modes: Write, Read, Erase, Read Status, and Write Configuration. During the Write and Erase operations, the power supply voltage is monitored and checked for valid voltage conditions before the device begins programming or erasing the memory. Additionally, the device includes inbuilt ECC, which can detect and correct any single bit errors in the memory.

In summary, the AT49F001T-70PI is a robust and reliable EEPROM, which is well suited for use in automotive and industrial applications. It provides fast erase and read access times, good program/erase endurance, and built-in ECC for enhanced reliability and security.