AM29F040B-90JD – SPANSION

Overview

The Spansion AM29F040B-90JD is a 4Mb (512K x 8-bit) Flash EPROM designed for high-performance embedded systems. Its primary function is non-volatile data storage, critical for firmware and configuration parameters. A key design consideration for this parallel interface device is managing the trade-off between access time and power consumption; while the 90ns access time is suitable for many applications, designers must carefully consider the capacitive loading and switching currents during high-speed read operations to maintain signal integrity and prevent voltage droop, especially in systems with limited power delivery capabilities.

Key Features

• 4 Megabit (512K x 8-bit) Flash EPROM
• 90ns Maximum Access Time
• 4.5V to 5.5V Operating Voltage Range
• CMOS Technology
• Parallel Interface (x8)
• PLCC32 Surface Mount Package (Dimensions: 11.4mm x 11.4mm x 3.8mm)

Applications

The component is engineered for deployment in systems requiring high reliability and performance under specific operating conditions. It provides functional stability across the stated design envelope.

• Boot code storage in embedded microcontrollers
• Firmware updates for industrial control systems
• Configuration data retention in networking equipment
• Data logging in portable measurement instruments