R7F103GFG3ZFP#UA0

R7F103GFG3ZFP#UA0 is a Renesas Electronics RL78/G21 16-bit microcontroller in a 44-pin LQFP package (10 x 10 mm, 0.80 mm pitch), the 128 KB tier of the 44-pin line in the generation Renesas launched on October 28, 2026. The GFG code carries 128 KB code flash — half the GFJ size — with SRAM and data flash unchanged at 8 KB and 4 KB, around the same 32 MHz RL78-S3 core and 10-bit ADC. A 1.6 V to 5.5 V supply serves legacy 5 V and modern 3.3 V designs, and the -40 °C to +105 °C grade (3Z) covers industrial and consumer enclosures. Selection advice: this #UA0 code is tray-packed; pick GFG for cost-led builds whose firmware fits 128 KB; the same product is listed in trays as #BA0 and on tape as #HA0, and GFJ doubles the flash on the same footprint. Parameters verified against Renesas Electronics documentation.