S-35190AH-J8T2U

Real Time Clock Overview

The S-35190AH-J8T2U is an automotive-grade 3-wire real-time clock IC from the S-35190A H Series, designed for operation up to 105°C. It features a wide operating voltage range of 1.3 V to 5.5 V and low current consumption of 0.25 µA typ. at 3.0 V during timekeeping. The device includes a built-in 32.768 kHz crystal oscillation circuit, auto-calendar functionality until 2099 with leap year calculation, and a clock correction register. It utilizes a MICROWIRE-compatible 3-wire serial interface (CS, SCK, SIO) and provides alarm interrupts, flag generation for power-on/low voltage events, and free user registers for backup memory.

Real Time Clock Feature Summary

• Automotive qualified (AEC-Q100 Grade 2) with -40°C to +105°C operating temperature range
• Low current consumption: 0.25 µA typ. (VDD = 3.0 V, Ta = +25°C)
• Built-in 32.768 kHz oscillator with external Cg and internal Cd
• Auto-calendar up to 2099 with automatic leap year calculation
• 3-wire (MICROWIRE) CPU interface with alarm interrupter and free user registers

Real Time Clock Applications

• Vehicle equipment and in-vehicle systems requiring 105°C operation
• Systems utilizing main supply or backup battery power sources
• Applications requiring precise timekeeping with temperature compensation

Real Time Clock Procurement Notes

Verify AEC-Q100 reliability specifications by contacting the manufacturer's sales office, as detailed qualification data is not included in the standard datasheet. Confirm that the J8T2 suffix corresponds to the 8-Pin SOP (JEDEC) package with tape packing. Ensure contact with ABLIC Inc. prior to use in vehicle equipment purposes.

Real Time Clock Selection Notes

Select this model for designs requiring high-temperature operation up to 105°C and low standby current. The J8T2 package code indicates an 8-pin SOP (JEDEC) form factor. Ensure the application supports the 1.3 V to 5.5 V supply range and utilizes a 3-wire serial interface. External quartz crystals with a CL value of 6 pF are required between XIN and XOUT pins.

Real Time Clock Part Context

This component belongs to the S-35190A H Series, which is specifically engineered for automotive environments. The 'H' designation denotes the extended temperature range capability. The part number structure includes the environmental code 'U' for lead-free (Sn 100%) and halogen-free compliance. It serves as a timekeeping solution for systems needing reliable calendar functions and backup memory capabilities.

Real Time Clock Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Users should consult ABLIC Inc. directly for alternative components or cross-reference options within the S-35190A series family.