M29F400BB70N6

Memory IC Overview

The M29F400BB70N6 is a 4-Mbit (512K x 8 or 256K x 16) NOR Flash memory component manufactured by Micron Technology Inc. It features a parallel asynchronous interface with a maximum access time of 70 ns and operates on a single 5V supply voltage. The device utilizes a TSOP-48 surface-mount package and supports an industrial operating temperature range from -40°C to +85°C. Its architecture includes a bottom boot block configuration, providing dedicated storage for firmware code while offering main blocks for general data storage.

Memory IC Feature Summary

• Features a bottom boot block memory organization suitable for executing code directly from flash.
• Supports both 8-bit and 16-bit data bus widths via a parallel asynchronous interface.
• Incorporates embedded algorithms for byte/word programming and sector erasing operations.

Memory IC Applications

• Embedded systems requiring direct code execution from non-volatile memory.
• Industrial control units needing reliable storage in extreme temperature environments.
• Consumer electronics utilizing standard 5V logic interfaces.

Memory IC Procurement Notes

Verify the specific manufacturer origin as the M29F series has been transferred between STMicroelectronics and Micron. Confirm RoHS compliance status and lead-free packaging details against current datasheets. Ensure the bottom boot block variant matches the design requirements, as top boot versions exist within the same family.

Memory IC Selection Notes

Select this component when a 4-Mbit capacity with a 70 ns speed grade is required for 5V applications. The bottom boot block structure is critical if the bootloader must reside at the lowest memory addresses. Compare against the M29W series if 3V operation is necessary instead of the standard 5V supply.

Memory IC Part Context

This part belongs to the M29F family of single-supply NOR Flash memories. It shares architectural similarities with the M29W series but differs in operating voltage requirements. The TSOP-48 package is common across various densities in this product line, facilitating pin-compatible upgrades or downgrades within the same form factor.

Memory IC Replacement Considerations

M29F400BT70N6: Identical specifications but features a top boot block configuration instead of bottom.

Memory IC FAQ

What is the memory organization of the M29F400BB70N6?

It consists of one boot block and multiple main blocks, with the boot block located at the bottom of the address space.

Does this device support simultaneous read and program operations?

Yes, it supports Program/Suspend and Read/Suspend modes, allowing reading of other blocks during programming or erasing.