25AA256T-E/SM

$1.41

Description：IC EEPROM 256KBIT SPI 8SOIJ
Series：-
Mfr：Microchip Technology
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:a299c4c4b015 Category: Memory IC Brand: Microchip Technology

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Product introduction

25AA256T-E/SM is listed in the Memory IC range at ChipApex. The manufacturer field lists Microchip Technology. Its product description is IC EEPROM 256KBIT SPI 8SOIJ. Review the specifications below when checking this part for your BOM.

Memory IC specifications for 25AA256T-E/SM

Description：IC EEPROM 256KBIT SPI 8SOIJ
Series：-
Mfr：Microchip Technology
Package：Tape & Reel (TR),Cut Tape (CT)
Memory Type：Non-Volatile
Memory Format：EEPROM
Technology：EEPROM
Memory Size：256Kbit
Memory Organization：32K x 8
Memory Interface：SPI
Clock Frequency：10 MHz
Write Cycle Time - Word, Page：5ms
Voltage - Supply：1.8V ~ 5.5V
Operating Temperature：-40°C ~ 125°C (TA)
Mounting Type：Surface Mount
Package / Case：8-SOIC (0.209", 5.30mm Width)
Supplier Device Package：8-SOIJ
Access Time：-
Grade：-
Qualification：-

Memory IC datasheet and documents for 25AA256T-E/SM

25AA256T-E/SM

Memory IC Overview

The Microchip Technology 25AA256T-E/SM is a 256 Kbit Serial Electrically Erasable PROM featuring a 32,768 x 8-bit organization. It utilizes an SPI-compatible serial bus with SCK, SI, SO, and CS signals for communication. The device supports a maximum clock frequency of 10 MHz at VCC levels between 4.5V and 5.5V. It operates within a supply voltage range of 1.8V to 5.5V and includes a 64-byte page buffer for write operations. The component is housed in an 8-lead SOIJ package and supports extended temperature ranges.

Memory IC Feature Summary

Supports block-level write protection allowing selection of none, one-quarter, one-half, or all array segments via status register configuration.
Includes built-in power-on/off data protection circuitry and a write enable latch to prevent inadvertent writes.
Features a hold input pin that suspends serial communication without resetting the sequence, enabling host interrupt servicing.

Memory IC Applications

Data logging systems requiring non-volatile storage
Configuration parameter storage in embedded controllers
Calibration value retention in industrial instrumentation

Memory IC Procurement Notes

Verify the specific suffix 'E' confirms the extended temperature rating (-40°C to +125°C) and 'T' indicates tape-and-reel packaging. Confirm the 'SM' designation matches the required 8-SOIJ (JEDEC SOIC) footprint dimensions. Ensure the voltage range specification aligns with the system's 1.8V to 5.5V operational requirements before finalizing procurement.

Memory IC Selection Notes

Select this part when SPI interface compatibility is required alongside low-power CMOS technology. The extended temperature grade suits harsh environments where standard industrial ratings are insufficient. Consider the 64-byte page size for write efficiency and the hardware write-protect pin for critical data security applications.

Memory IC Part Context

This component belongs to the 25XX256 family of 256 Kbit Serial EEPROMs from Microchip Technology. It shares functional similarities with the 25LC256 but differs in minimum operating voltage specifications. The family supports multiple package types including PDIP, SOIC, TSSOP, and DFN variants.