The 9-ball WLCSP version measures 1,155 × 1,155 mm and is geared towards devices with strong space constraints, such as smart rings, smartwatches, activity trackers, virtual reality glasses and other wearable electronic equipment.
The SLG46801 allows the integration of different analog, timing, and logic functions into a single circuit, which, depending on the application, can complement a microcontroller or replace several discrete components.
Configurable analog and digital functions
The device integrates two high-speed analog comparators, configurable lookup tables (LUTs), counters and delays, as well as 10 kHz and 25 MHz oscillators. It also features GPIO pins tolerant to different voltage levels and an I²C-compatible serial interface.
These resources enable the implementation of detection, control, interconnection logic, timing, and system management functions. Their potential applications include consumer electronics, portable devices, smart home systems, communications and networks, computing, storage, industrial control, and IoT sensor nodes.
WLCSP and STQFN Packages
In addition to the 9-ball WLCSP, the SLG46801 is offered in a 12-pin STQFN package with dimensions of 1.6 × 1.6 × 0.55 mm. Both options allow the component to be adapted to specific design requirements. The WLCSP prioritizes reducing the board footprint, while the STQFN provides additional GPIO pins and a form factor suitable for applications using this type of package.
Configuration using GreenPAK
GreenPAK circuits allow the combination of configurable analog and digital functions in a single component. The SLG46801 is developed and configured using Renesas Go Configure Software Hub, a graphical environment that allows the definition of hardware functions, as well as programming, emulation, and simulation tasks.
This approach allows certain functions to be implemented without the need for additional discrete components or the development of specific firmware for them.
MTP memory and updates via I²C
One of the features of the SLG46801 is its multi-time programmable non-volatile memory. This memory can be configured within the system itself via the I²C interface. The reprogrammability allows for the modification of parameters or functions after the component has been integrated into the final product. This enables configuration changes, corrections, or updates to be applied without physically replacing the circuit.
GPIO pins can also be dynamically reassigned for use with the I²C interface, a feature intended for designs with a limited number of available connections.
The circuit also incorporates optional CRC-8 and read protection to control and verify stored configurations.
Power supply between 1.71 and 5.5 V
The SLG46801 can operate and be programmed with supply voltages between 1.71 and 5.5 V. This range facilitates its use with different power supply architectures and types of electronic devices.
The combination of configurable logic, analog blocks, timing functions, and MTP memory allows the circuit to be used as a complementary element to a microcontroller or to concentrate several auxiliary functions in a single component.
Availability
The SLG46801 in STQFN packaging is currently in the sample phase. Renesas plans to begin volume production of the WLCSP version in November 2026.
The programming, emulation, and simulation of the device is performed using the Renesas Go Configure Software Hub.
