S-35190A-J8T1U

Real Time Clock Overview

The S-35190A-J8T1U is a CMOS 3-wire real-time clock IC manufactured by ABLIC Inc. It operates within a wide voltage range of 1.3 V to 5.5 V and consumes 0.25 µA typically during timekeeping at 3.0 V. The device features an auto-calendar function up to the year 2099 with automatic leap year calculation, a built-in clock correction register, and free user registers for backup memory. It utilizes a 3-wire MICROWIRE interface (CS, SCK, SIO) and includes alarm interrupters, flag generators for low power or power-on events, and a constant-voltage circuit. The J8T1 suffix indicates an 8-pin SOP (JEDEC) package in tape format, while U denotes lead-free (Sn 100%) and halogen-free compliance.

Real Time Clock Feature Summary

• Low current consumption: 0.25 µA typ. at VDD = 3.0 V
• Wide operating voltage range: 1.3 V to 5.5 V
• Built-in clock correction function and free user registers
• 3-wire (MICROWIRE) CPU interface with alarm interrupter

Real Time Clock Applications

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

Real Time Clock Procurement Notes

Verify that the ordering suffix J8T1 corresponds to the 8-Pin SOP (JEDEC) package in tape packing specification. Confirm the environmental code U indicates lead-free (Sn 100%) and halogen-free status as specified in the product name structure. Ensure compatibility with the required tape reel land patterns for the specific SOP variant.

Real Time Clock Selection Notes

Select this component when a low-power RTC with a 3-wire serial interface is required. The J8T1 package is suitable for surface-mount applications requiring standard SOP dimensions. Consider the built-in clock correction feature if high precision is needed without external temperature sensors. Verify that the system voltage falls within the 1.3 V to 5.5 V operating range.

Real Time Clock Part Context

The S-35190A is part of ABLIC's 3-wire real-time clock family. The J8T1 designation specifically identifies the 8-Pin SOP (JEDEC) package version supplied in tape packaging. This distinguishes it from the T8T1 (TSSOP) and I8T1 (SNT-8A) variants. The 'U' suffix confirms the environmental compliance of the product.

Real Time Clock Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Cross-model comparisons within the S-35190A family (e.g., T8T1, I8T1) offer pin-compatible alternatives with different packages.