24CW320T-E/ST66KVAO

Memory IC Overview

The Microchip Technology 24CW320T-E/ST66KVAO is a 32-Kbit I²C Serial EEPROM housed in an 8-lead TSSOP package. It operates within a voltage range of 1.6V to 5.5V and supports clock frequencies up to 1 MHz. The device features software write protection via the Write Protection Register and programmable hardware client address bits controlled by the Hardware Address Register. It offers extended temperature operation from -40°C to +125°C, ensuring reliability for demanding environments.

Memory IC Feature Summary

• Supports high-speed I²C communication with industry-standard 100 kHz, 400 kHz, and 1 MHz modes.
• Includes versatile data protection options through configurable software write protection registers.
• Features programmable hardware client address bits to allow multiple devices on a common bus.
• Provides low-power CMOS technology with standby current as low as 1 µA.

Memory IC Applications

• Consumer electronics requiring reliable nonvolatile memory storage
• Industrial systems needing dependable data retention across wide temperature ranges
• Automotive applications qualified under AEC-Q100 standards

Memory IC Procurement Notes

Verify the specific ordering suffix ST66KVAO against official Microchip documentation to confirm the TSSOP-8 package and reel packaging configuration. Ensure the Extended temperature grade (E) matches system thermal requirements. Confirm RoHS compliance status and check for any recent Product Change Notifications that may affect pinout or electrical characteristics before finalizing procurement.

Memory IC Selection Notes

Select this component when a 32-Kbit capacity is required alongside I²C interface compatibility. The Extended temperature rating (-40°C to +125°C) makes it suitable for harsh environments where Industrial grade parts may fail. Consider the 8-lead TSSOP package if board space allows for slightly larger footprints compared to UDFN or SOT-23 options while maintaining surface-mount assembly benefits.

Memory IC Part Context

This part belongs to the 24CW Series family of serial EEPROMs, which includes densities ranging from 16-Kbit to 128-Kbit. The '32' indicates the 32-Kbit density, while 'E' denotes the Extended temperature range. The 'ST' specifies the 8-lead TSSOP package type. This series is optimized for applications requiring robust data protection and flexible addressing schemes on shared I²C buses.

Memory IC Replacement Considerations

Compatible substitutes within the same family include 24CW320T-I/MUY (UDFN-8, Industrial Temp) and 24CW320T-E/MS66KVAO (MSOP-8, Extended Temp). Verify package dimensions and pinouts carefully when swapping between TSSOP, MSOP, and UDFN variants to ensure mechanical fit and electrical connectivity remain unchanged.