Tiny IC packs analog and logic functions
At just 1.155×1.155 mm, the Renesas GreenPAK SLG46801 configurable mixed-signal IC is small enough for use in smart rings and watches. Its 9-ball WLCSP makes it the smallest device in the GreenPAK family, combining an ultra-compact footprint with multi-time programmability (MTP). The SLG46801 integrates commonly used functions that complement an MCU or replace multiple discrete components in analog signal-processing applications.
Along with two high-speed analog comparators, the SLG46801 integrates configurable lookup tables, two oscillators (10 kHz and 25 MHz), and counters/delays. MTP non-volatile memory is programmed in-system via an I2C serial interface, allowing bug fixes and updates. The device supports operation and programming across a supply range of 1.71 V to 5.5 V for low-cost sensing, control, and glue-logic functions.
In addition to the WLCSP, the SLG46801 is available in a 12-lead, 1.6×1.6-mm STQFN package. The WLCSP provides seven GPIO pins, one of which is voltage-tolerant. The STQFN provides 10 GPIO pins, two of which are voltage-tolerant. GPIO pins used for the I2C interface can also be reconfigured, maximizing flexibility in designs with limited pin availability.
The SLG46801 is sampling now in the STQFN package, with mass production of the WLCSP package planned for November 2026. Renesas Go Configure Software Hub is available for programming, emulation, and simulation.
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