47C16-I/SN

Overview

The Microchip Technology 47C16-I/SN is a Static Random Access Memory (SRAM) device classified as EERAM, featuring 16 kbit storage capacity organized as 2k x 8 bits. It utilizes an I2C serial interface with a maximum clock frequency of 400 kHz and an access time of 900 ns. The component operates within a supply voltage range of 2.5 V to 5.5 V and is housed in an 8-SOIC package. Designed for industrial applications, it supports operating temperatures from -40°C to +85°C.

Feature Summary

• Combines SRAM speed with EEPROM non-volatility through integrated backup mechanisms
• Enables data retention during power loss via automatic battery or capacitor switching
• Provides high-speed serial communication through standard I2C protocol compatibility

Applications

• Industrial sensor data logging requiring persistent storage
• Real-time control systems needing fast volatile memory with non-volatile backup
• Embedded devices requiring configuration parameter retention without write-cycle limitations

Procurement Notes

Verify the specific suffix 'I/SN' against the manufacturer's current datasheet to confirm pinout and electrical characteristics match your design requirements. Ensure the ordering documentation explicitly identifies this part as a Static RAM (EERAM) rather than standard EEPROM or Flash to avoid functional mismatches in circuit implementation.

Selection Notes

Select this component when application logic demands rapid read/write speeds typical of SRAM while ensuring critical data survives power interruptions. The I2C interface simplifies PCB routing compared to parallel memories. Verify that the system can provide adequate backup voltage support to maintain SRAM content during main power transitions.

Part Context

This device belongs to Microchip's 47L/47C series of EERAMs, which integrate SRAM arrays with EEPROM backup circuits. Unlike traditional EEPROMs, these parts offer unlimited write endurance and faster access times. The 'I' suffix denotes industrial temperature range compliance, while 'SN' indicates the SOIC-8 surface-mount package type.

Replacement Considerations

Direct substitutes include other 16-kbit I2C EERAM devices from Microchip such as the 47L16 series. Cross-referencing with generic I2C EEPROMs requires careful evaluation of write cycle times and voltage levels, as functional equivalence may not be guaranteed due to the distinct SRAM-based architecture.