Renesas R5F110MHGFB#30

Overview

R5F110MHGFB#30 from Renesas is an RL78/L1C 80-pin low-power MCU with integrated LCD controller/driver (44/56 segment, 4/8 common), 192 KB flash, 12 KB RAM, USB 2.0 function controller (full-speed/low-speed), and 12-bit A/D converter (2.4–3.6 V), targeting battery-powered LCD display systems such as smart meters and portable medical devices.

For engineers reviewing the R5F110MHGFB#30 datasheet, R5F110MHGFB#30 pinout, R5F110MHGFB#30 application, or R5F110MHGFB#30 equivalent, key selection criteria include USB 2.0 function support, ultra-low power operation (0.68 μA in RTC2+LVD mode), LCD drive capability up to 56 segments, industrial temperature range (−40°C to +105°C), and compatibility with Renesas' E2 studio and CS+ development tools.

Technical Context

The R5F110MHGFB#30 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and selectable instruction timing (0.04167 μs @24 MHz to 30.5 μs @32.768 kHz). It integrates a dedicated USB voltage regulator (UREGC/UVBUS pins), on-chip PLL for USB clock generation, and dual-clock domain operation supporting HS (main) and subsystem (32.768 kHz) clocks.

Its LCD controller supports internal voltage boosting, capacitor split, and external resistor division methods; segment outputs are configurable across P0–P7, P10–P12, P14–P15, and P20–P27, with COM0–COM7 driven directly. The 12-bit A/D converter operates only in HS mode and requires VDD ≥ 2.4 V, while the 8/10-bit mode functions at VDD ≥ 1.6 V.

Key Specifications

Pinout & Package

80-pin plastic LFQFP (12 × 12 mm, 0.5 mm pitch), RoHS-compliant, with exposed thermal pad (PLQP0080KB-B).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with R5F110MHGFB#30, R5F110MJGFB#30 provides headroom for future firmware expansion without layout change, while R5F111MHGFB#30 removes USB-related circuitry and BOM cost - both retain identical LCD drive capability, power profile, and industrial temperature rating.

Availability

R5F110MHGFB#30 is available at Aetrix Electronics and suitable for smart metering, portable medical instrumentation, industrial HMI panels, and home appliance control requiring stable component supply across extended product lifecycles.

Supply support for R5F110MHGFB#30 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/L1C product line is engineered for ultra-low-power LCD-based applications, integrating display control, precision analog, USB connectivity, and robust real-time operation in a single chip.

FAQ

What is the maximum LCD segment count supported by R5F110MHGFB#30?

The R5F110MHGFB#30 supports up to 56 segment outputs when configured with 8 common lines (COM0–COM7), or 44 segments with 4 common lines. Segment mapping is fixed per pin assignment (e.g., SEG0–SEG3 on COM4–COM7, SEG12–SEG25 on P70–P77), and no external segment drivers are required due to integrated charge pump and voltage boosting.

Does R5F110MHGFB#30 support USB device enumeration without external components?

Yes, R5F110MHGFB#30 includes a fully integrated USB 2.0 function controller with on-die transceiver, PHY, and voltage regulator. Only two 27 Ω series resistors on UDP/UDM and a 0.33 μF capacitor on UREGC are required - no external USB interface IC, level shifter, or crystal is needed for basic HID or CDC class operation.

What are the operating voltage requirements for the 12-bit A/D converter in R5F110MHGFB#30?

The 12-bit A/D converter in R5F110MHGFB#30 requires VDD between 2.4 V and 3.6 V. It is not operational below 2.4 V; for lower supply voltages (1.6–2.3 V), only the 8/10-bit A/D mode is available. The internal 1.45 V reference remains stable across this range and supports accurate ratiometric measurements.

How does the STOP mode current of R5F110MHGFB#30 compare to similar RL78 MCUs?

R5F110MHGFB#30 achieves 0.68 μA in STOP mode with RTC2 and LVD active - matching the lowest published value for the RL78/L1C family. This is 30% lower than RL78/G13 STOP current and enables decade-long battery life in applications like utility meters where periodic wake-up and timekeeping are critical.

Can R5F110MHGFB#30 drive a 1/4-duty LCD without external bias circuitry?

Yes, R5F110MHGFB#30 natively supports 1/4-duty (4-common) LCDs using its internal capacitor split method. With COM0–COM3 active and appropriate VL1–VL4 voltage settings, it generates correct bias ratios without external resistors or charge pumps - verified in Renesas Application Note R01AN3827EU0101.