EEPROM Memory IC: Microchip 25LC160T-I/SN 16K SPI Interface

In the realm of non-volatile memory, Electrically Erasable Programmable Read-Only Memory (EEPROM) remains a cornerstone technology for storing critical data in embedded systems. The Microchip 25LC160T-I/SN stands out as a premier solution, offering 16 kilobits (2 Kbytes) of reliable, serial-accessible memory for a vast array of applications. This device encapsulates the essential qualities of modern EEPROMs: low power consumption, high reliability, and a simple interface.

A key feature of the 25LC160T-I/SN is its industry-standard SPI (Serial Peripheral Interface) serial bus. This interface allows the IC to communicate with a host microcontroller (MCU) using just four wires: Serial Clock (SCK), Serial Data In (SI), Serial Data Out (SO), and Chip Select (CS). This drastically reduces the number of I/O pins required on the MCU, making it an ideal choice for space-constrained and cost-sensitive designs. The SPI bus also supports high-speed operations, with the 25LC160T capable of running at clock speeds up to 10 MHz, enabling rapid data read and write cycles.

The memory is organized as 2,048 x 8 bits, providing ample space for storing system parameters, calibration data, user settings, and event logs. It features a sophisticated page write buffer of 16 bytes, allowing for more efficient programming by writing up to 16 bytes of data in a single operation. For data integrity, the IC includes both hardware and software write protection schemes. The built-in Write-Enable Latch (WEL) and a protected block of memory can be configured to prevent accidental data overwrites.

Engineers favor this component for its exceptional endurance and retention. It is rated for over 1,000,000 erase/write cycles per byte and can retain data for over 200 years, ensuring long-term performance in demanding environments. Its operating voltage range of 1.8V to 5.5V makes it perfectly suited for both 5V and 3.3V systems, from industrial automation and automotive electronics to smart meters and consumer gadgets.

Housed in a compact 8-lead SOIC (SN) package, the 25LC160T-I/SN is designed for easy integration into modern PCB assemblies. Its extended industrial temperature range (-40°C to +85°C) guarantees stable operation under harsh conditions.

ICGOODFIND: The Microchip 25LC160T-I/SN is a robust and highly efficient 16K SPI EEPROM, offering an optimal blend of simplicity, performance, and reliability for designers seeking a proven non-volatile memory solution.

Keywords: EEPROM, SPI Interface, Non-volatile Memory, Microchip, Data Retention