BUY RV13 https://www.utsource.net/itm/p/2224927.html

The RV13 is a 44-pin QFP (Quad Flat Package) integrated circuit manufactured by Renesas Electronics. It is a low-power, low-voltage, single-chip microcontroller designed for use in consumer and industrial applications. It features a 32-bit ARM Cortex-M3 core, up to 512 KB of Flash memory, and up to 64 KB of SRAM. It also has a variety of peripherals, including a 10-bit ADC, a 12-bit DAC, and a USB 2.0 full-speed controller. The RV13 is suitable for applications such as home appliances, security systems, medical equipment, and automotive applications. (For reference only)