M28W320FCT70ZB6E

Memory IC Overview

The M28W320FCT70ZB6E is a 32 Mbit (2Mb x16) parallel NOR flash memory featuring a top boot block architecture. It operates with a core supply voltage of 2.7V to 3.6V and supports I/O voltages from 1.65V to 3.6V. The device provides a 70ns access time and utilizes a TFBGA47 package measuring 6.39mm by 6.37mm. It includes an optional 12V VPP pin for fast programming, supports 100,000 program/erase cycles per block, and implements Common Flash Interface (CFI) standards.

Memory IC Feature Summary

• Asynchronous parallel interface supporting chip-in-place execution
• Hardware block locking with lock-down capability via Write Protect input
• On-chip Program/Erase Controller managing timing and status verification
• Protection Register containing unique device identifier and user-programmable OTP cells

Memory IC Applications

• Embedded firmware storage in industrial control systems
• Boot code storage requiring top-block protection
• Communication equipment requiring reliable non-volatile memory
• Automotive electronic control units

Memory IC Procurement Notes

Verify the specific suffix ZB6E against manufacturer documentation to confirm the TFBGA47 package and lead-free RoHS compliance. Confirm that the '70' designation corresponds to the 70ns access speed variant. Ensure compatibility with the required VDDQ voltage range if operating below 3.0V. Check current product lifecycle status as older Micron/Numonyx parts may be discontinued.

Memory IC Selection Notes

Select this component when a top-boot configuration is required for secure firmware storage. The 16-bit data bus width suits processors needing wider data paths without multiplexing. The independent VDDQ supply allows flexibility in interfacing with lower voltage logic while maintaining higher core voltage for operations. Verify that the system design can accommodate the optional 12V VPP line if fast programming speeds are necessary.

Memory IC Part Context

This part belongs to the M28W320 family of 32Mbit parallel NOR flashes originally developed by Numonyx and later integrated into Micron Technology's portfolio. The FCT suffix indicates the Top Boot Block arrangement, distinguishing it from the FCB Bottom Boot variant. The ZB6E suffix specifies the TFBGA47 package type and environmental compliance.

Memory IC Replacement Considerations

Direct replacements include other M28W320 variants with matching 70ns speed and TFBGA47 packaging, such as M28W320FCB70ZB6E if bottom boot is acceptable. Cross-manufacturer equivalents require careful verification of command sets and electrical characteristics.