Renesas R5F110MHAFB#70

Overview

R5F110MHAFB#70 from Renesas is an ultra-low-power 16-bit RL78/L1C microcontroller with integrated LCD controller/driver (44–56 segment, 4–8 common), 12-bit A/D converter (12-channel, VDD = 2.4–3.6 V), USB 2.0 function controller (full-speed/low-speed), and 128 KB flash memory. It operates from 1.6 V to 3.6 V and delivers 33 DMIPS at 24 MHz, targeting battery-powered LCD-based consumer devices such as smart meters and portable medical displays.

For engineers reviewing the R5F110MHAFB#70 datasheet, R5F110MHAFB#70 pinout, R5F110MHAFB#70 application, or R5F110MHAFB#70 equivalent, key selection criteria include its USB 2.0 function support, true low-power operation (0.68 μA in RTC2+LVD mode), integrated LCD drive capability, 12-bit ADC accuracy, and 80-pin LFQFP package compatibility with existing RL78/L1C layout footprints.

Technical Context

The R5F110MHAFB#70 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and selectable instruction execution time (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 clock synthesis, and dual-clock domain support (main system clock + subsystem clock).

Its peripheral set includes a 16-channel event link controller (ELC), data transfer controller (DTC) with chain transfer, and LCD controller supporting internal voltage boosting, capacitor split, and external resistor division methods - all configurable via register settings without external components.

Key Specifications

Pinout & Package

Package: 80-pin plastic LFQFP (12 × 12 mm, 0.5 mm pitch), RoHS-compliant, tray-packaged (#70 specification).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F110MHAFB#70, R5F110NJAFB#70 provides headroom for future firmware expansion while maintaining identical low-power behavior and LCD capability, whereas R5F111MHAFB#70 removes USB circuitry to lower system cost and simplify power design - both retain full software compatibility within the RL78/L1C family.

Availability

R5F110MHAFB#70 is available at Aetrix Electronics and suitable for smart energy meters, portable medical monitors, industrial HMIs, and home appliance controls requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for R5F110MHAFB#70 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 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 specifically for ultra-low-power LCD-based applications, integrating display control, precision analog, and USB connectivity into a single chip to minimize system-level complexity and power consumption.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating of the R5F110MHAFB#70?

The R5F110MHAFB#70 achieves a maximum operating frequency of 24 MHz using its high-speed on-chip oscillator or PLL, delivering 33 DMIPS of processing performance. This benchmark is measured under standard conditions (VDD = 3.3 V, TA = 25°C) and reflects real-world throughput for mixed-code workloads including interrupt handling and peripheral access.

Does the R5F110MHAFB#70 support USB device enumeration without external components?

Yes, the R5F110MHAFB#70 integrates a complete USB 2.0 function controller with internal transceiver and voltage regulator. When UREGC is decoupled with a 0.33 μF capacitor and UVBUS is properly biased, the R5F110MHAFB#70 enumerates as a full-speed USB device without external PHY or level shifters.

How many LCD segments and commons does the R5F110MHAFB#70 support, and what drive methods are available?

The R5F110MHAFB#70 supports up to 56 segment outputs and 8 common outputs. It offers three configurable LCD drive methods: internal voltage boosting, capacitor split, and external resistance division - selected via control registers to match display glass requirements without external components.

What is the guaranteed minimum data flash endurance for the R5F110MHAFB#70?

The R5F110MHAFB#70 guarantees 1,000,000 write/erase cycles for its 8 KB data flash memory under specified conditions (VDD = 1.8–3.6 V, TA = -40°C to +85°C). Background operation (BGO) allows concurrent code execution during rewrites, enabling seamless firmware updates and parameter storage.

Is the R5F110MHAFB#70 pin-compatible with other RL78/L1C variants in the 80-pin LFQFP package?

Yes, all RL78/L1C 80-pin LFQFP variants - including R5F110MEAFB#70, R5F110MGAFB#70, and R5F110NJAFB#70 - share identical pinouts and mechanical footprint. Peripheral function allocation may differ by variant, but core signals (power, reset, clocks, USB, LCD, and GPIO) maintain consistent pin mapping across the family.