25LC020AT-H/SN

Overview

The Microchip Technology 25LC020AT-H/SN is a low-density Serial Electrically Erasable PROM (EEPROM) with a storage capacity of 2K bits, organized as 256 x 8. It supports the SPI compatible serial bus architecture and operates within a supply voltage range of 2.5V to 5.5V. The device features a maximum clock frequency of 5 MHz at voltages between 4.5V and 5.5V, or 3 MHz at voltages between 2.5V and 4.5V. It utilizes a standard 8-lead SOIC package and is designed for extended temperature operation ranging from -40°C to +150°C.

Feature Summary

• Supports byte-level and page-level write operations with self-timed erase and write cycles.

Applications

• Direct interface with microcontroller families including PIC microcontrollers via SPI ports.

Procurement Notes

Verify that the ordering suffix 'H' corresponds to the extended temperature grade (-40°C to +150°C) and 'SN' indicates the 8-lead SOIC package. Confirm RoHS compliance and Pb-free status by checking the datasheet marking information and external packaging labels. Ensure the specific part number matches the required density and organization specifications before procurement.

Selection Notes

Select this component when an SPI-compatible EEPROM is required for applications operating in high-temperature environments up to 150°C. The device provides sufficient endurance for typical industrial use cases and includes hardware write protection capabilities. Verify that the system's SPI controller can support the required clock speeds and voltage levels for reliable data transfer.

Part Context

This device belongs to the 25LCXXXA family of low-density serial EEPROMs manufactured by Microchip Technology. The family offers various memory densities and is designed for non-volatile data storage in embedded systems. The 25LC020AT variant specifically addresses the need for compact, reliable storage solutions in space-constrained designs requiring robust performance under varying thermal conditions.

Replacement Considerations

Compatible substitutes include other members of the 25LCXXXA family such as the 25LC010A or 25LC040A, provided the memory density requirements align with the application needs. Ensure that any replacement maintains the same package type and temperature rating if environmental constraints are critical.