Renesas R5F110MJAFB#30

Overview

R5F110MJAFB#30 from Renesas is an RL78/L1C 80-pin LQFP microcontroller with integrated LCD controller/driver, USB 2.0 function controller, 256 KB flash, 16 KB RAM, and 12-bit A/D converter - designed for ultra-low-power LCD-based consumer devices operating from 1.6 V to 3.6 V.

For engineers reviewing the R5F110MJAFB#30 datasheet, R5F110MJAFB#30 pinout, R5F110MJAFB#30 application, or R5F110MJAFB#30 equivalent, key selection criteria include USB 2.0 full-speed support, 44–56 segment LCD drive capability, RTC2 with calendar, and HALT/STOP/SNOOZE low-power modes for battery-powered instrumentation.

Technical Context

The R5F110MJAFB#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), on-chip high-accuracy oscillator (±1.0% over -20 to +85°C), and dual-clock domain (main + subsystem) for independent peripheral control.

Its LCD controller supports internal voltage boosting, capacitor split, and external resistor division methods; it drives up to 56 segments and 8 commons. The USB 2.0 function controller supports full-speed (12 Mbps) and low-speed (1.5 Mbps) operation and complies with Battery Charging Specification Rev. 1.2.

Key Specifications

Pinout & Package

80-pin plastic LFQFP (12 × 12 mm, 0.5 mm pitch), RoHS-compliant, tray-packaged (#30).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F110MHAFB#30, the R5F110MJAFB#30 provides 64 KB additional flash for bootloader, encryption, or enhanced UI assets; compared with R5F111MJAFB#30, it adds USB 2.0 functionality at the cost of two dedicated USB pins and minor power overhead - enabling direct PC integration without external bridge ICs.

Availability

R5F110MJAFB#30 is available at Aetrix Electronics and suitable for medical glucose meters, smart thermostats, portable blood pressure monitors, and USB-enabled digital multimeters requiring stable component supply across production lifecycles.

Supply support for R5F110MJAFB#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 consumer electronics, integrating USB, LCD drivers, and precision analog peripherals to minimize external components in cost- and space-constrained displays.

FAQ

What is the maximum LCD segment count supported by the R5F110MJAFB#30?

The R5F110MJAFB#30 supports up to 56 segment outputs and 8 common outputs when configured for 8-common operation. This enables driving large alphanumeric or graphical segmented displays without external LCD drivers. Segment mapping is configurable via the LCD control registers, and voltage generation supports internal boosting, capacitor split, or external resistor division methods - all managed within the R5F110MJAFB#30's integrated LCD controller.

Does the R5F110MJAFB#30 support USB device enumeration without external components?

Yes, the R5F110MJAFB#30 includes a fully integrated USB 2.0 function controller with on-chip voltage regulator (UREGC), full-speed transceiver, and BC1.2 charging detection logic. When paired with the required 0.33 μF UREGC capacitor and standard USB connector wiring (UDM/UDP), the R5F110MJAFB#30 enumerates as a USB device without external PHY or level-shifting components.

What are the low-power mode current specifications for the R5F110MJAFB#30?

The R5F110MJAFB#30 achieves 112.5 μA/MHz in HALT mode, 0.68 μA in STOP mode with RTC2 and LVD active, and supports SNOOZE mode for selective peripheral wake-up. These values are measured at VDD = 3.0 V and TA = 25°C per the RL78/L1C datasheet Rev.2.40. The R5F110MJAFB#30 maintains real-time clock accuracy and brown-out detection during STOP, enabling reliable wake-up from deep sleep in battery-powered R5F110MJAFB#30 applications.

Can the R5F110MJAFB#30 perform ADC conversions while in low-power mode?

Yes, the R5F110MJAFB#30 supports ADC operation in HALT mode and certain SNOOZE configurations. Its 12-bit A/D converter can be triggered by asynchronous events (e.g., timer overflow or external interrupt) and complete conversions without waking the CPU core - allowing continuous sensor monitoring at sub-mA average current. The R5F110MJAFB#30's ADC retains its 1.45 V internal reference and 13-channel input capability during these low-power sequences.

Is the R5F110MJAFB#30 pin-compatible with other RL78/L1C variants in the 80-pin LFQFP package?

Yes, all 80-pin RL78/L1C variants - including R5F110MEAFB#30 through R5F110MJAFB#30 and R5F111MEAFB#30 through R5F111MJAFB#30 - share identical pinouts and LFQFP-80 footprints. However, USB-related pins (UREGC, UVBUS, UDM, UDP) are no-connection in non-USB variants like the R5F111x series, and must be left unconnected or tied appropriately in hardware design. The R5F110MJAFB#30's functional compatibility is maintained across this family for drop-in replacement where USB is unused.