MBM29LV400BC-70PFTN

Memory IC Overview

The MBM29LV400BC-70PFTN is a 4-megabit CMOS Flash memory manufactured by Fujitsu, organized as 512K x 8 or 256K x 16. It operates on a single 3.0 V supply for read, program, and erase functions, eliminating the need for external 12.0 V or 5.0 V programming voltages. The device features a 70 ns maximum access time and supports standard JEDEC pinouts. It utilizes embedded algorithms for automatic preprogramming and erasing, ensuring reliable data integrity during in-system programming operations.

Memory IC Feature Summary

• Single 3.0 V operation minimizes system power requirements for all memory functions
• Embedded Erase and Program algorithms automate write and verify cycles
• Sector erase architecture allows concurrent erasure of any sector combination
• Data polling and toggle bit features provide cycle completion detection

Memory IC Applications

• In-system programming applications requiring low voltage operation
• Storage for boot code sectors with top or bottom sector configurations
• Embedded systems utilizing standard EPROM software command compatibility

Memory IC Procurement Notes

Verify that the specific suffix PFTN corresponds to the reversed bend type TSOP1-48 package configuration required by your PCB layout. Confirm that the design strictly adheres to the 3.0 V supply specification, as this device does not support dual-voltage programming inputs. Ensure the manufacturer source is recognized as Fujitsu or its authorized successor entities to guarantee component authenticity and datasheet accuracy.

Memory IC Selection Notes

Select this component when a 4 Mbit capacity is required with a 70 ns access speed and a 48-pin TSOP package. It is suitable for designs mandating a single 3.0 V supply rail without auxiliary high-voltage generators. Consider the sector organization if specific boot code protection or flexible block erasure is necessary for the application firmware structure.

Memory IC Part Context

This part belongs to the MBM29LV400 series of 3.0 V-only Flash memories. It shares architectural similarities with other devices in the family but is distinct due to its specific 70 ns speed grade and the PFTN package designation indicating a reversed bend TSOP form factor. It represents a transition from older dual-voltage EPROM replacements to modern single-supply flash technologies.

Memory IC Replacement Considerations

Compatible substitutes include the MBM29LV400TC-70PFTN variant, which differs primarily in sector orientation (Top vs. Bottom). Other equivalent parts may include devices from Spansion or Macronix offering identical 4 Mbit capacities, 3.0 V operation, and 48-pin TSOP packages with matching timing specifications.