47L16T-E/ST

Overview

The Microchip Technology 47L16T-E/ST is a 16Kbit Electrically Erasable RAM (EERAM) integrated circuit housed in an 8-pin TSSOP package. It combines SRAM speed with EEPROM non-volatility, operating on a single 2.7V to 3.6V supply. The device features an I2C interface with a clock frequency of 1 MHz and a word access time of 400 ns. It includes EEPROM backup functionality to retain data during power loss.

Feature Summary

• Integrates high-speed SRAM with non-volatile EEPROM backup for seamless data retention without external batteries or complex control logic.
• Supports standard I2C communication protocol with configurable slave addresses and up to 1 MHz clock frequency.
• Operates within a wide voltage range of 2.7V to 3.6V, suitable for low-power portable and battery-operated applications.

Applications

• Industrial control systems requiring persistent configuration storage
• Medical devices needing reliable data logging without maintenance
• Automotive systems demanding robust non-volatile memory solutions

Procurement Notes

Verify the suffix 'T' indicates tape and reel packaging containing 2500 units per reel. Confirm the '-E' suffix denotes extended industrial temperature range specifications. Ensure compatibility with 1 MHz I2C bus speeds and 3.3V logic levels before integration into final designs.

Selection Notes

Select this component when non-volatility is required without the complexity of managing backup batteries or supercapacitors. It serves as a drop-in replacement for volatile SRAM where data persistence across power cycles is critical. Consider the 8-pin TSSOP footprint for space-constrained PCB layouts.

Part Context

This part belongs to the 47L16 family of EERAM devices from Microchip Technology. These components are designed to bridge the gap between fast volatile memory and slow non-volatile storage, offering immediate read/write access while preserving data indefinitely.

Replacement Considerations

The 47L16-I/ST is a verified alternative within the same series, differing primarily in the operational temperature range designation rather than functional electrical characteristics.

FAQ

Does the 47L16T-E/ST require an external battery for data retention?

No, the internal EEPROM backup mechanism automatically preserves SRAM data during power loss without requiring external batteries or capacitors.

What is the maximum I2C clock frequency supported by this device?

The device supports an I2C clock frequency of up to 1 MHz.