R7F103GFJ3ZFP#UA0

R7F103GFJ3ZFP#UA0 is a Renesas Electronics RL78/G21 16-bit microcontroller in a 44-pin LQFP package (10 x 10 mm, 0.80 mm pitch), released by Renesas on October 28, 2026 as the new RL78 general-purpose generation. The GFJ code carries the largest memory in this pin count: 256 KB code flash, 4 KB data flash and 8 KB SRAM around the 32 MHz RL78-S3 core, with a 10-bit ADC. A 1.6 V to 5.5 V operating range lets the same part drop into both legacy 5 V and modern 3.3 V designs without level shifting, and the -40 °C to +105 °C grade (the 3Z code) covers industrial and consumer enclosures alike. The gain is headroom: more code space for larger firmware in the familiar 44-pin outline, easing migration from earlier RL78 designs. Selection advice: GFG codes halve code flash to 128 KB for cost-led builds; #UA0 is a packing specification from the datasheet ordering table (the product name also lists #BA0 and #HA0), so Parameters verified against Renesas Electronics documentation.