AT29LV020-12JI

Memory IC Overview

The AT29LV020-12JI is a 3-volt-only in-system reprogrammable Flash memory with a capacity of 2 megabits (256K x 8). It features a 120 ns maximum access time and operates within a 3.3V ± 0.3V supply range. The device utilizes a parallel interface and supports sector-based programming with software data protection. It includes two 8K-byte boot blocks with lockout capabilities, DATA polling for program detection, and toggle bits for cycle monitoring. Endurance exceeds 10,000 cycles, with active current at 15 mA and standby current under 50 µA.

Memory IC Feature Summary

• Sector-based programming architecture with software data protection
• Hardware and software mechanisms for boot block lockout
• Internal program control timer and erase algorithms
• Data polling and toggle bit status indicators

Memory IC Applications

• In-system code storage for microcontrollers
• Boot code storage with lockout protection
• Industrial control system firmware
• Consumer electronics firmware updates

Memory IC Procurement Notes

Verify the manufacturer origin as Atmel or Microchip Technology depending on production era. Confirm the package type corresponds to the 'J' suffix (PLCC-32) and the temperature grade matches the 'I' suffix (Industrial -40°C to +85°C). Ensure the datasheet revision aligns with the specific ordering code requirements for your design.

Memory IC Selection Notes

Select this component for applications requiring single 3.3V supply operation without high voltage programming requirements. Consider the PLCC-32 package constraints for PCB layout. Evaluate the 120 ns access speed against processor bus requirements. Verify that the sector size and boot block configuration meet the specific memory map needs of the target system.

Memory IC Part Context

This part belongs to the AT29LV020 family of 2-megabit Flash memories. It is manufactured using advanced nonvolatile CMOS technology. The device is designed for compatibility with standard EPROM pinouts while offering lower power consumption and in-system reprogrammability. It serves as a drop-in replacement for older EPROM technologies in legacy designs.

Memory IC Replacement Considerations

Check for AT29LV020-12JC if commercial temperature range suffices. Verify AT29BV020 series for broader voltage compatibility if needed. Consult official substitution guides for pin-compatible alternatives from other manufacturers.