32 MHz RL78 core with 96 KB flash — memory headroom for sensor-fusion and HMI
The R7F100GGF2DFB#BA0: The RL78/G23 core runs at 32 MHz, a 16-bit architecture that balances throughput against power draw for always-on sensing applications. The 96 KB flash and 12 KB RAM leave room for a capacitive-touch library, a small RTOS, and several communication stacks without squeezing the firmware into the last 2 KB. An integrated 8 KB EEPROM eliminates the external serial memory chip for calibration constants, user settings, or event logs — one fewer BOM line and no I²C/SPI bus overhead for reads.
Capacitive touch and 12-bit ADC — sensor front-end on a single chip
For a control panel with membrane buttons, a slider, and an analog sensor (e.g., NTC thermistor or photodiode), this MCU handles the entire analog chain — no external op-amp or comparator needed. The 40 GPIOs in the 48-LQFP package give enough headroom for a small TFT display parallel bus, a few LED indicators, and the touch electrodes, all on a single board layer.
The internal oscillator starts from 1.6 V, so the core boots before the rest of the board is fully powered — useful for sequencing or brownout recovery. Pin 1 is marked with a chamfer on the package corner and a dot on the top mold.
Industrial temperature grade — -40 to 85°C ambient
The flash retention and oscillator stability are guaranteed across this range — no derating needed for cold-start or hot-day operation.
The RL78/G23 family is a current-generation platform, so supply continuity is stable through authorized and independent distribution. RoHS3 compliance (EU 2015/863) is confirmed — no exemption expiry to track.