AT29LV040A-20TC

Memory IC Overview

The AT29LV040A-20TC is a 3-volt only in-system Flash Programmable and Erasable Read Only Memory (PEROM) manufactured by Microchip Technology. It provides 4 megabits of storage organized as 524,288 words by 8 bits. The device features a maximum access time of 200 ns and operates within a voltage range of 3.3V ± 0.3V. It supports commercial temperature ranges from 0°C to 70°C and industrial ranges from -40°C to 85°C. The component utilizes a 32-lead Thin Small Outline Package (TSOP).

Memory IC Feature Summary

• Supports single voltage read and write operations without requiring high input voltages for programming.
• Includes software data protection and hardware safeguards against inadvertent programming.
• Features two designated 16K byte boot blocks with independent programming lockout capabilities.

Memory IC Applications

• In-system reprogrammable code storage
• Boot block memory for system initialization
• Data storage requiring sector-based erasure

Memory IC Procurement Notes

Verify the specific suffix TC indicates the 32-lead TSOP package configuration. Confirm the operating temperature range matches the required application environment, distinguishing between commercial and industrial ratings. Ensure the 3.3V power supply specifications align with the system design constraints before procurement.

Memory IC Selection Notes

Select this component when a 4-megabit nonvolatile memory solution with sector-based organization is required. Consider the 200 ns access speed and 3-volt operation limits. Evaluate the need for boot block lockout features if secure code storage is necessary. Verify compatibility with existing parallel interface designs.

Memory IC Part Context

This part belongs to the AT29LV040A series of 3-volt Flash memories. It shares architectural similarities with other devices in the family but differs in package type and speed grade. The 'TC' suffix specifically denotes the TSOP package variant suitable for surface mount applications.

Memory IC Replacement Considerations

AT29LV040A-20TI

Memory IC FAQ

How is the end of a program cycle detected?

The device supports DATA polling on I/O7 and Toggle Bit monitoring on I/O6 to indicate the completion of program or erase cycles.

What is the sector size for programming?

Programming is performed on a sector basis, where each sector consists of 256 bytes.