S-35399A03-J8T2G

Real Time Clock Overview

The S-35399A03 is a CMOS 2-wire real-time clock IC featuring low current consumption of 0.34 μA typ. at VDD = 3.0 V and Ta = +25°C. It operates within a wide voltage range of 1.3 V to 5.5 V, supporting both main supply and backup battery applications. The device includes an I²C-bus interface, built-in clock correction, a 24-bit binary up counter, and free user registers for data backup. It provides automatic calendar calculation up to the year 2099 with leap-year compensation.

Real Time Clock Feature Summary

• Low current consumption: 0.34 μA typ. (VDD = 3.0 V, Ta = +25°C)
• Wide operating voltage range: 1.3 V to 5.5 V
• Built-in clock correction function and 24-bit binary up counter
• I²C-bus CPU interface with two alarm interrupters

Real Time Clock Applications

• Mobile game devices
• Digital still cameras
• Electronic power meters
• TV and VCR systems

Real Time Clock Procurement Notes

Verify the ordering suffix J8T2G against official ABLIC documentation to confirm package type and packing specifications. Ensure environmental codes match lead-free and halogen-free requirements. Cross-reference pin configurations and electrical characteristics with the latest datasheet revision before procurement.

Real Time Clock Selection Notes

Select this component for applications requiring low power consumption in timekeeping modes. Ensure the system voltage falls within the 1.3 V to 5.5 V range. Consider the built-in clock correction feature if high precision is needed across temperature variations. Verify compatibility with the I²C bus speed requirements of the host microcontroller.

Real Time Clock Part Context

The S-35399A03 is part of ABLIC's 2-wire real-time clock family. It is designed for use in various electronic devices where accurate timekeeping and low power consumption are critical. The device integrates necessary functions such as alarms, counters, and user registers into a compact 8-pin SOP package.

Real Time Clock Replacement Considerations

Check for direct replacements within the ABLIC S-35399 series or other compatible RTCs with similar I²C interfaces and voltage ranges. Ensure pin compatibility and register map alignment if substituting with devices from other manufacturers.

Real Time Clock FAQ

What is the maximum year supported by the auto-calendar function?

The auto-calendar function supports dates up to the year 2099, including automatic leap year calculations.

How does the S-35399A03 handle power failures?

It includes a low power supply voltage detection circuit that automatically switches to a backup supply to maintain timekeeping and alarm operations.

Can the S-35399A03 be used with a 1.3 V supply?

Yes, the device operates within a wide voltage range of 1.3 V to 5.5 V, making it suitable for low-voltage applications.