Intel PC28F128P33B85: A Comprehensive Technical Overview of the 128-Megabit Flash Memory Device

The Intel PC28F128P33B85 represents a significant component within the landscape of non-volatile memory solutions, designed for high-performance embedded systems requiring reliable and fast code storage. As a 128-megabit (16-megabyte) parallel NOR Flash memory device, it is engineered to serve as a critical element in applications ranging from telecommunications and networking equipment to industrial control systems and avionics, where robust data integrity and rapid access times are paramount.

Fabricated on Intel's advanced 0.13-micron mirrorBit process technology, this device fundamentally differs from traditional floating-gate NOR Flash by storing data in an insulating nitride layer. This architectural choice provides several key advantages, including enhanced endurance and reduced cell size, leading to a more cost-effective and reliable memory solution. The part is organized as 128 megabits, configured as 16,777,216 words by 8 bits or 8,388,216 words by 16 bits, offering design flexibility for various system bus widths.

A core feature of the PC28F128P33B85 is its high-speed synchronous burst read mode, which operates at frequencies up to 85MHz. This capability is essential for modern microprocessors and microcontrollers that utilize burst sequences to pre-fetch instructions, significantly boosting system performance by minimizing wait states. The device also supports asynchronous read operations for simpler interfacing, with access times as low as 90ns. For write operations, it employs a Advanced Sector Protection (ASP)

mechanism, offering both hardware and software-controlled locking for individual memory blocks to prevent accidental or malicious corruption of critical code.

The device operates from a single 3.0V power supply (2.7V to 3.6V) for all read, program, and erase operations, making it suitable for power-conscious designs. Its endurance is rated for 100,000 program/erase cycles per sector, a testament to its durability for firmware that may require frequent updates. Furthermore, it guarantees data retention for up to 20 years, ensuring long-term reliability.

Programming and erasure are managed through a standardized command set, simplifying integration with existing software drivers. The process is automated with on-chip algorithms, freeing the host processor from intensive timing management. Status registers provide real-time feedback on operation completion and any error conditions, facilitating robust system control.

In summary, the Intel PC28F128P33B85 is a sophisticated memory solution that balances high performance, security, and reliability. Its parallel interface and burst mode support make it ideal for demanding embedded applications where execution-in-place (XIP) is a necessity.

ICGOOODFIND: The Intel PC28F128P33B85 is a high-performance 128Mb NOR Flash memory device renowned for its 85MHz burst read speed, advanced sector protection, and exceptional reliability built on mirrorBit technology. It is a premier choice for mission-critical embedded systems requiring fast, secure, and durable non-volatile storage.

Keywords:

1. NOR Flash Memory

2. 128-Megabit

3. Synchronous Burst Read

4. Advanced Sector Protection (ASP)

5. mirrorBit Technology