Renesas R5F110MEAFB#30

Overview

R5F110MEAFB#30 from Renesas is an ultra-low-power 16-bit RL78/L1C microcontroller with integrated LCD controller/driver (44 segment × 4 common), 12-bit A/D converter (12-channel, VDD = 2.4–3.6 V), USB 2.0 function controller (full-speed/low-speed), and 64 KB flash memory - designed for battery-powered LCD-based medical devices, portable meters, and home appliance displays.

For engineers reviewing the R5F110MEAFB#30 datasheet, R5F110MEAFB#30 pinout, R5F110MEAFB#30 application, or R5F110MEAFB#30 equivalent, key selection criteria include its 80-pin LFQFP package, -40°C to +85°C industrial-grade temperature range (A-grade), true low-power operation (0.68 μA in RTC2+LVD STOP mode), and USB 2.0 compliance with Battery Charging Specification Rev. 1.2.

Technical Context

The R5F110MEAFB#30 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and selectable instruction timing (0.04167 μs min @ 24 MHz or 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 support (main system clock + subsystem clock).

Its LCD controller supports internal voltage boosting, capacitor-split, and external resistor-divider bias methods; it drives up to 44 segments and 4 commons with programmable VL1–VL4 outputs. The USB function controller operates in HS (high-speed main) mode only and supports BCD 1.2 charging detection via UDM/UDP signaling.

Key Specifications

Pinout & Package

80-pin plastic LFQFP (12 × 12 mm, 0.5 mm pitch), RoHS-compliant, tray-packaged (#30 specification). Requires external 0.47–1 μF capacitor on REGC and 0.33 μF on UREGC.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F110MEAFB#30, R5F110MGAFB#30 offers headroom for feature-rich firmware while maintaining identical power and LCD performance, whereas R5F111MEAFB#30 removes USB hardware to reduce BOM cost and simplify certification - both share the same footprint and thermal profile.

Availability

R5F110MEAFB#30 is available at Aetrix Electronics and suitable for portable medical devices, smart home displays, and industrial handheld meters requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant manufacturing.

Supply support for R5F110MEAFB#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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/L1C product line targets ultra-low-power LCD-based applications, integrating specialized peripherals - LCD driver, USB function, and precision ADC - to minimize external components in cost- and size-constrained designs.

FAQ

What is the maximum operating frequency and corresponding current consumption of the R5F110MEAFB#30?

The R5F110MEAFB#30 operates up to 24 MHz using its high-speed on-chip oscillator (±1.0% accuracy). At this frequency, typical active current is 112.5 μA/MHz - resulting in ~2.7 mA total at 24 MHz with all peripherals active. HALT mode reduces current proportionally while retaining register state.

Does the R5F110MEAFB#30 support USB device charging detection per Battery Charging Specification 1.2?

Yes, the R5F110MEAFB#30 USB function controller fully complies with Battery Charging Specification Revision 1.2. It detects Dedicated Charging Ports (DCP), Charging Downstream Ports (CDP), and Standard Downstream Ports (SDP) via UDM/UDP line states - no external circuitry required.

How many LCD segments and commons does the R5F110MEAFB#30 support, and what bias methods are available?

The R5F110MEAFB#30 supports up to 44 segment outputs and 4 common outputs. It provides three LCD bias configurations: internal voltage boosting (for low-VDD operation), capacitor-split (for medium contrast), and external resistance division (for precise voltage tuning) - selected via control registers.

Can the R5F110MEAFB#30 perform ADC conversions while in low-power STOP mode?

No - the 12-bit A/D converter requires the system clock and is disabled in STOP mode. However, the R5F110MEAFB#30 supports HALT mode (CPU stopped, peripherals active) and SNOOZE mode (ADC triggered by timer/event while CPU sleeps), enabling low-power sampling without full wake-up.

What debug and programming interfaces are supported by the R5F110MEAFB#30?

The R5F110MEAFB#30 includes an on-chip debug interface accessible via TOOL0, TOOLRxD, and TOOLTxD pins - compatible with Renesas E2 emulator and standard SWD protocols. It supports self-programming of flash and data flash, including boot swap and flash shield window protection.