MT28F128J3RG-12 MET

Memory IC Overview

The MT28F128J3RG-12MET is a 128Mbit (16MB) parallel NOR flash memory from Micron's Q-Flash J3 family. It features a 56-pin TSOP Type I package and supports asynchronous page mode reads with a 120ns access time. The device operates on a single 2.7V to 3.6V supply and offers x8/x16 data bus width selection via the BYTE# pin. It includes 128 erase blocks of 128KB each, Common Flash Interface (CFI) support, and an extended temperature range of -40°C to +85°C.

Memory IC Feature Summary

• Supports in-system block locking for individual sector protection
• Features automatic suspend options for block erase and program operations
• Includes a 128-bit protection register with unique device identifier
• Provides hardware status indicator (STS) to minimize CPU overhead

Memory IC Applications

• Industrial embedded systems requiring reliable code storage
• Network infrastructure equipment firmware storage
• Consumer electronics applications needing fast boot times
• Automotive control modules with extended temperature requirements

Memory IC Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm lead-free status and RoHS compliance as indicated by the MET suffix. Ensure compatibility with existing system voltage levels and interface timing requirements before integration.

Memory IC Selection Notes

Select this part for applications requiring high reliability and fast random access. Consider the 120ns access time and 56-pin TSOP package for standard PCB layouts. Evaluate the need for x8 versus x16 bus width based on host controller capabilities. Verify that the 128-block organization fits the application's file system structure.

Memory IC Part Context

This component belongs to Micron's Q-Flash J3 series, designed for high-performance embedded applications. It utilizes 0.15µm process technology and is compatible with Intel StrataFlash architectures. The J3 family emphasizes software compatibility through CFI and Scalable Command Set standards.

Memory IC Replacement Considerations

Check for MT28F128J3RP-12MET for lead-free TSOP variants. Consider MT28F128J3BS-12M for FBGA package alternatives. Verify electrical and mechanical compatibility before substituting with other manufacturers' parts.

Memory IC FAQ

What is the function of the VPEN pin?

VPEN serves as an input for application programming voltage. When connected to ground, it provides absolute data protection by disabling all program and erase functions.

How does the STS signal improve system performance?

The STS signal provides a hardware indication of the internal state machine activity, allowing the system to monitor readiness without polling, thus reducing CPU overhead and power consumption.