Intel RC28F128J3F75: A Comprehensive Technical Overview of the 128-Megabit Flash Memory Chip
The Intel RC28F128J3F75 represents a significant milestone in the evolution of non-volatile memory technology. As a 128-megabit (16MB) flash memory chip, it was engineered to meet the demanding requirements of a wide array of applications, from embedded systems and networking equipment to industrial controls and telecommunications infrastructure. This device is a prime example of Intel's leadership in the development of reliable, high-performance memory solutions.
Fabricated on a mature yet highly optimized process technology, the RC28F128J3F75 is built around a symmetric memory block architecture. This design is crucial for its primary function: storing executable code (XIP - Execute-In-Place). The chip is organized as 128 megabits, configured as 1,048,576 words x 16 bits or 2,097,152 words x 8 bits, providing designers with flexibility for different system bus widths. This organization makes it particularly suitable for use with a variety of 16-bit and 8-bit microprocessors and microcontrollers.
A key feature of this memory chip is its advanced 1.8V voltage supply for core operations. This low-voltage operation was a forward-looking specification, enabling reduced power consumption—a critical factor for battery-powered and energy-sensitive applications. Despite its low core voltage, it maintains a versatile interface with 3.3V tolerant I/O pins, ensuring easy compatibility with existing system logic without requiring additional level-shifting components.
Performance is a cornerstone of its design. The chip offers fast access times, with a 70ns maximum random access time for read operations. This speed ensures that the host processor can retrieve code and data with minimal wait states, enhancing overall system performance. For write and erase operations, it incorporates an Intelligent Write Algorithm managed by an integrated state machine. This onboard controller automates the complex processes of programming and erasing, significantly simplifying the software driver development and freeing up the host processor from tedious timing management.
The RC28F128J3F75 also boasts robust data integrity and security features. It includes a hardware-based data protection scheme that guards against accidental writes during power transitions. Furthermore, it offers 64-word of protection registers, allowing system designers to lock down critical boot code or sensitive parameters to prevent unauthorized modification or corruption.
In terms of reliability and endurance, this chip is designed for the long haul. It supports a minimum of 100,000 program/erase cycles per block, a specification that ensures data can be updated frequently over the operational life of the product. Its data retention capability is equally impressive, rated for up to 20 years, guaranteeing that information remains intact even in devices deployed for extended periods without power.
ICGOOODFIND: The Intel RC28F128J3F75 is far more than a simple storage component; it is a highly integrated, intelligent, and reliable solution for code storage in mission-critical systems. Its blend of low-power operation, high performance, and exceptional endurance solidified its position as a trusted choice for a generation of electronic designs, showcasing the engineering excellence required for complex embedded applications.
Keywords: Flash Memory, 128-Megabit, 1.8V Core Voltage, Execute-In-Place (XIP), Program/Erase Endurance
