R7F103GLG3ZFB#BA0

R7F103GLG3ZFB#BA0 is a Renesas Electronics RL78/G21 16-bit microcontroller in a 64-pin LFQFP package (10 x 10 mm, 0.50 mm pitch, Renesas code PLQP0064KB-C), supplied in trays under the #BA0 packing code. It is the cost-led memory option in the compact body: 128 KB code flash with the family-standard 8 KB SRAM and 4 KB data flash, a 32 MHz RL78-S3 core, a 1.6 V to 5.5 V supply and a -40 °C to +105 °C grade. Designs gain the full 64-pin peripheral set and the small 10 x 10 mm footprint without paying for unused flash. Selection advice: the same product is also listed as #UA0 (tray) and #HA0 (embossed tape). The GLJ codes double code flash to 256 KB in this identical package if firmware outgrows the part, while the 64-pin LQFP codes (ZFA) offer the same 128 KB in a 12 x 12 mm, 0.65 mm pitch body on an incompatible footprint — a layout decision, not a drop-in swap. Parameters verified against Renesas Electronics documentation.