RM25C32DS-LTAI-B

Memory IC Overview

The RM25C32DS-LTAI-B is a 32Kbit non-volatile serial EEPROM memory IC utilizing CBRAM technology. It features an SPI interface supporting modes 0 and 3, with clock rates up to 1.6 MHz for normal read and 10 MHz for fast read. The device operates on a single supply voltage of 1.65V to 3.6V. It includes a 32-byte page size, 64-byte OTP security register, and hardware reset capability. Endurance is rated at 100,000 write cycles with data retention exceeding 40 years.

Memory IC Feature Summary

• Utilizes Adesto proprietary CBRAM resistive memory technology for direct-write operations without pre-erase requirements.
• Supports flexible programming with byte or page write capabilities ranging from 1 to 32 bytes per operation.
• Includes a 64-byte One-Time Programmable (OTP) Security Register with 32 factory-programmed unique identifier bytes.
• Features ultra-low power consumption modes including Auto Ultra-Deep Power-Down after write operations.

Memory IC Applications

• Low-power embedded systems requiring non-volatile data storage
• IoT devices needing secure identification via OTP registers
• Industrial control applications demanding high endurance across temperature ranges

Memory IC Procurement Notes

Verify the specific package variant (SOIC, TSSOP, or UDFN) required for your design, as the base part number covers multiple packages. Confirm RoHS compliance and halogen-free status if environmental regulations apply. Check current availability as component lifecycles may change; consult official Renesas or distributor channels for active ordering information.

Memory IC Selection Notes

Select this component when designing systems that require high endurance for frequent byte-level writes compared to traditional floating-gate EEPROMs. Ensure the host microcontroller supports SPI Mode 0 or 3. Verify that the operating voltage range of 1.65V to 3.6V aligns with your system's power supply rails.

Memory IC Part Context

This device belongs to the RM25C series of serial EEPROMs based on CBRAM technology. It is manufactured by Renesas Electronics Corporation, which acquired Adesto Technologies. The series offers alternatives to conventional flash and EEPROM technologies by providing faster write speeds and higher endurance specifically optimized for byte-write intensive applications.

Memory IC Replacement Considerations

Direct pin-to-pin replacements within the same family include RM25C64DS and RM25C128DS for larger capacities. For legacy floating-gate EEPROMs, verify interface compatibility and endurance differences before substituting.