1337GNLGI8

Overview

The 1337GNLGI8 is a Real-Time Clock (RTC) integrated circuit manufactured by Renesas Electronics Corporation. It provides clock and calendar functionality via an I2C, 2-Wire serial interface. The device is housed in a 16-VFQFN exposed pad package. It operates within a supply voltage range of 1.8V to 5.5V and supports a 32kHz crystal oscillator input. The component is designed for surface mount installation and functions reliably across a temperature range of -40°C to +85°C.

Feature Summary

• Integrates real-time clock counting for seconds, minutes, hours, day, date, month, and year with leap-year compensation valid up to 2100
• Communicates using a standard I2C, 2-Wire serial interface
• Supports flexible power supply operation from 1.8V to 5.5V

Applications

• Data logging systems requiring precise time stamping
• Consumer electronics with calendar display capabilities
• Industrial equipment needing time-keeping functions

Procurement Notes

Verify the specific suffix NLI8 against the official Renesas ordering guide to confirm package type and tape/reel specifications. Ensure the design accommodates the 16-VFQFN footprint and thermal requirements. Confirm I2C address settings and voltage levels match the system bus before integration.

Selection Notes

Select this component when a compact RTC solution with wide voltage tolerance is required. The 16-VFQFN package suits space-constrained designs. Verify compatibility with the host microcontroller's I2C interface speed and voltage levels. Consider the operating temperature range for environmental suitability.

Part Context

This part belongs to the 1337G series of real-time clocks from Renesas. It complements other variants like the 1337AGDCGI8 and 1337GDVGI8, which offer similar time-keeping features but differ in package styles such as SOIC-8 or TSSOP-8. The series focuses on low-power, accurate time maintenance for embedded applications.

Replacement Considerations

Direct substitutes include the 1337AGDCGI8 and 1337GDVGI8. Note that these alternatives utilize different packages (SOIC-8 and TSSOP-8 respectively) compared to the 16-VFQFN of the 1337GNLGI8. PCB layout adjustments may be necessary when switching between these package types.