AT28BV64B-20TI

Memory IC Overview

The AT28BV64B-20TI is a 64K (8K x 8) battery-voltage parallel EEPROM manufactured by Microchip Technology. It operates on a single 2.7V to 3.6V supply with a maximum access time of 200 ns. The device features an active current of 15 mA and a standby current of 20 µA. It supports automatic page write operations for up to 64 bytes, utilizes software data protection, and includes an extra 64 bytes for device identification. It is housed in a 28-lead TSOP package and functions within an industrial temperature range of -40°C to +85°C.

Memory IC Feature Summary

• Supports automatic page write operations with internal address and data latches for up to 64 bytes
• Includes hardware and software data protection mechanisms to prevent inadvertent writes
• Features DATA polling and toggle bit capabilities for end-of-write detection
• Provides an additional 64 bytes of EEPROM memory dedicated to device identification

Memory IC Applications

• Battery-powered embedded systems requiring nonvolatile storage
• Industrial control applications needing high-reliability data retention
• Systems utilizing software data protection protocols for security

Memory IC Procurement Notes

Verify the specific ordering suffix 'TI' corresponds to the 28-lead Plastic Thin Small Outline Package (TSOP). Confirm that the required operating voltage falls strictly within the 2.7V to 3.6V range. Ensure the application environment remains within the specified industrial temperature limits of -40°C to +85°C. Check for compliance with RoHS standards if lead-free packaging is mandated for the project.

Memory IC Selection Notes

Select this component when a parallel interface is required alongside low power consumption and fast read access times. The inclusion of software data protection makes it suitable for environments prone to power instability. Consider the 28-lead TSOP package for surface-mount assembly constraints. Evaluate the need for the dedicated identification memory space against standard array requirements.

Memory IC Part Context

This part belongs to the AT28BV64B series of electrically erasable programmable read-only memories. It is designed using advanced CMOS technology to offer high performance and reliability. The series supports various package options including PLCC, PDIP, SOIC, and TSOP, catering to different board layout and manufacturing needs across industrial applications.

Memory IC Replacement Considerations

Compatible variants include AT28BV64B-20JI, AT28BV64B-20PI, AT28BV64B-20SI, and AT28BV64B-20SU. These share identical electrical specifications but differ in physical package type such as PLCC, PDIP, or SOIC.