STMicroelectronics M29F400T-90N1 Flash Memory

The M29F400T-90N1 is a high-performance 4 Mbit (4,194,304 bits) Flash memory product from STMicroelectronics, designed for applications that demand reliable code storage and data retention. This device is particularly well-suited for use in embedded systems where longevity and endurance are critical. It operates at a speed of 90 nanoseconds, ensuring fast data access times for high-speed microprocessors.

The memory is organized as 512K bytes of 8 bits or 256K words of 16 bits. This flexible organization allows designers to optimize their data storage solution for their specific needs, whether they require byte-level or word-level access. The M29F400T-90N1 supports a wide voltage range from 4.5V to 5.5V, making it compatible with a variety of digital systems and ensuring stable operation even in fluctuating power conditions.

One of the key features of the M29F400T-90N1 is its boot block architecture. This design includes a boot block, two parameter blocks, and a main block, which can be individually locked. The boot block sector is located at the top or bottom of the memory map depending on the model and provides a safe area to store boot or critical code, which is protected from accidental erasure.

The device offers several modes of operation, including Read, Erase, and Program modes. Programming and erasure are performed on a sector basis, allowing for flexibility and minimal downtime when updating the memory contents. The Erase Suspend mode enables the user to pause an erase operation to read or program data in another sector, enhancing the device's versatility in multitasking environments.

STMicroelectronics ensures data integrity with a 100,000 program/erase cycle guarantee per sector and a data retention period of 20 years, providing confidence in the longevity and reliability of your data storage.

For ease of integration, the M29F400T-90N1 features a standard pinout, compatible with JEDEC standards. It is provided in a 44-pin SOP (Plastic Small Outline Package) or a 48-pin TSOP (Thin Small Outline Package), depending on the application's space and packaging requirements.

In summary, the M29F400T-90N1 from STMicroelectronics is a robust and reliable Flash memory solution, perfect for demanding applications that require both flexibility and endurance.