AT29LV1024-15TC

Memory IC Overview

The AT29LV1024-15TC is a 3-volt only in-system Flash programmable and erasable read-only memory (PEROM) manufactured by Microchip Technology. It provides 1 megabit of storage organized as 65,536 words by 16 bits. The device features a fast access time of 150 ns and operates within a supply voltage range of 3V to 3.6V. It utilizes a 48-lead Thin Small Outline Package (TSOP). Key electrical characteristics include an active current of 15 mA and a CMOS standby current of 50 µA. The component supports asynchronous parallel interfaces and is designed for commercial temperature ranges.

Memory IC Feature Summary

• Supports single-cycle sector reprogramming with internal erase and program control timers
• Includes software data protection requiring specific command sequences to prevent inadvertent writes
• Provides hardware protection mechanisms including VCC sense and power-on delay
• Features DATA polling and toggle bit methods for end-of-program cycle detection

Memory IC Applications

• In-system code storage for embedded microcontrollers
• Data logging applications requiring nonvolatile sector-based updates
• Firmware storage in consumer electronics devices
• Industrial control systems needing reliable 3-volt operation

Memory IC Procurement Notes

Verify the package type corresponds to the TSOP variant, as PLCC options exist for this family. Confirm the suffix indicates the correct speed grade and temperature range. Check manufacturer lifecycle status, as older flash components may be discontinued or subject to last-time buys. Ensure design-in compatibility with 3.3V logic levels and interface requirements.

Memory IC Selection Notes

Select this component when a 1-megabit capacity with 16-bit word width is required. The 150 ns access time suits moderate-speed parallel interface designs. Consider the 3-volt operating range for low-power systems. Evaluate the sector organization if frequent small-data updates are necessary. Compare against higher-density alternatives if system scalability is a priority.

Memory IC Part Context

This part belongs to the AT29LV series of 3-volt Flash memories. It shares architectural similarities with other members like the AT29BV series but differs in voltage requirements and density. The device represents Atmel's advanced nonvolatile CMOS technology adapted for in-system programming capabilities without high-voltage generation circuits.

Memory IC Replacement Considerations

AT29LV1024-15TI

Memory IC FAQ

How does the software data protection mechanism work?

Programming requires a specific three-word command sequence sent to designated addresses before any data can be written. This prevents accidental erasure or modification during normal operation.

What is the sector organization of this memory?

The 1-megabit memory is divided into 512 individual sectors, with each sector containing 128 words. Programming occurs on a sector basis.

How can the end of a program cycle be detected?

The device supports DATA polling, where reading the last loaded word returns its complement during programming, and Toggle Bit monitoring, where I/O6 and I/O14 toggle until the cycle completes.