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CAT25640VI-GT3

ONCAT25640VI-GT3

onsemi
EEPROM Memory IC 64Kbit SPI 20 MHz 8-SOIC
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Overview

The CAT25640VI-GT3 is a 64Kbit non-volatile CMOS EEPROM organized as 8192 words of 8 bits each. It utilizes a high-speed SPI interface supporting clock frequencies up to 20 MHz and operates over a wide voltage range of 1.8V to 5.5V.

Why Choose This Part

This device features a 64-byte page write buffer and a high endurance rating of 1,000,000 program/erase cycles with 100-year data retention. Its flexible power requirements and small SOIC-8 footprint make it an efficient choice for space-constrained designs needing reliable non-volatile storage.

Applications

Parameter Storage
Retaining calibration data, user settings, and configuration parameters in industrial and consumer devices.
Data Logging
Storing event logs or sensor readings in low-power battery-operated systems due to its 3uA standby current.
Firmware Metadata
Storing boot pointers, hardware versioning information, or security keys for system microcontrollers.

Key Specifications

Technology EEPROM
Memory Size 64Kbit
Memory Type Non-Volatile
Memory Format EEPROM
Mounting Type Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width)
Clock Frequency 20 MHz
Memory Interface SPI
Voltage - Supply 1.8V ~ 5.5V
Memory Organization 8K x 8
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 8-SOIC
Write Cycle Time - Word, Page 5ms

Getting Started

Interface the device via a standard 4-wire SPI bus (CS, SCK, SI, SO) and ensure the WP and HOLD pins are tied high if not used for hardware protection. Most MCU SPI libraries can be used by implementing the standard 8-bit instruction set for READ, WRITE, and WREN commands.

Also Consider

25LC640A-I/SN MCHPMicrochip Technology - An industry-standard 64Kbit SPI EEPROM with similar 1.8V to 5.5V operating range and SOIC-8 packaging.
M95640-RMN6TP STMicroelectronics - Provides 64Kbit density with a high clock frequency of 20 MHz for fast data retrieval.
AT25640B-SSHL-T MCHPMicrochip Technology - A highly popular alternative featuring an 8K x 8 organization and low power consumption for embedded designs.