Renesas R5F110NFGLA#W0

Overview

R5F110NFGLA#W0 from Renesas is an RL78/L1C 85-pin VFLGA microcontroller with integrated LCD controller/driver, USB 2.0 function controller, 12-bit A/D converter (VDD ≥ 2.4 V), 64 KB flash, 8 KB data flash, and 8 KB RAM - designed for ultra-low-power LCD-based consumer and industrial applications operating from 1.6–3.6 V.

For engineers reviewing the R5F110NFGLA#W0 datasheet, R5F110NFGLA#W0 pinout, R5F110NFGLA#W0 application, or R5F110NFGLA#W0 equivalent, key selection criteria include USB 2.0 full-speed capability, 44-segment/4-common LCD drive support, real-time clock with calendar, low-power STOP/HALT modes (0.68 μA RTC2 + LVD), and industrial-grade temperature range (−40 to +105°C).

Technical Context

The R5F110NFGLA#W0 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction timing (0.04167 μs min @ 24 MHz PLL clock or 30.5 μs @ 32.768 kHz subsystem clock). It integrates a dedicated USB voltage regulator (UREGC/UVBUS pins), on-chip high-accuracy oscillator (±1.0% over −20 to +85°C), and event link controller (ELC) enabling hardware-triggered peripheral chaining without CPU intervention.

Its LCD controller supports internal voltage boosting, capacitor-split, and external resistor-divider bias methods; segment outputs are configurable across 44–56 segments and 4–8 commons depending on mode. The 12-bit A/D converter operates only at VDD ≥ 2.4 V and includes internal reference (1.45 V TYP) and temperature sensor, while the dual 8-bit D/A outputs deliver 0–VDD analog signals with real-time update capability.

Key Specifications

Pinout & Package

Package: 85-pin plastic VFLGA (7 × 7 mm, 0.65 mm pitch), industrial-grade (G), embossed tape packaging (#W0).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F110NFGLA#W0, R5F110NGGLA#W0 provides headroom for feature-rich firmware while maintaining identical footprint and power behavior, whereas R5F111NFGLA#W0 removes USB circuitry to lower system-level noise and simplify regulatory testing - both retain full LCD, RTC, and low-power functionality.

Availability

R5F110NFGLA#W0 is available at Aetrix Electronics and suitable for smart utility meters, industrial HMIs, portable medical devices, home appliance controls, and battery-powered LCD instrumentation requiring stable component supply across long production lifecycles.

Supply support for R5F110NFGLA#W0 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 delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/L1C product line targets ultra-low-power, LCD-centric applications - integrating specialized peripherals like LCD drivers, USB function controllers, and RTC2 to minimize external components in cost-sensitive, battery-operated devices.

FAQ

What is the maximum LCD segment count supported by the R5F110NFGLA#W0?

The R5F110NFGLA#W0 supports up to 56 segment outputs and 8 common outputs when configured for 8-common operation. In standard 4-common mode, it drives 44 segments. Segment mapping is fixed per pin assignment (e.g., SEG0–SEG6, SEG12–SEG25), and unused segments remain inactive - no dynamic remapping is supported. This matches the RL78/L1C family specification for 85-pin USB-enabled variants.

Does the R5F110NFGLA#W0 support USB device enumeration without external components?

Yes, the R5F110NFGLA#W0 includes a fully integrated USB 2.0 function controller with internal transceiver and voltage regulator. It requires only external 0.33 μF UREGC decoupling and standard USB-series 27 Ω resistors on UDP/UDM - no external PHY, level shifter, or regulator IC is needed for basic full-speed or low-speed enumeration per USB-IF compliance tests.

What are the valid operating voltage and temperature ranges for the R5F110NFGLA#W0?

The R5F110NFGLA#W0 operates from 1.6 V to 3.6 V supply voltage and is rated for industrial temperature range of −40°C to +105°C (denoted by "G" in the part number). Its 12-bit A/D converter requires VDD ≥ 2.4 V for full resolution; low-voltage detection (LVD) offers 12 selectable threshold levels for brown-out protection across the full voltage range.

How does the R5F110NFGLA#W0 achieve ultra-low power consumption in STOP mode?

The R5F110NFGLA#W0 achieves 0.68 μA in STOP mode by disabling the main CPU, flash, and most peripherals while retaining power to the RTC2 module, LVD circuit, and RAM retention. This state is entered via software command and exited by RTC alarm, LVD interrupt, or external reset - enabling decade-long battery operation in metering and sensing applications without compromising timekeeping accuracy.

Can the R5F110NFGLA#W0 perform background data flash writes while executing code from main flash?

Yes, the R5F110NFGLA#W0 supports Background Operation (BGO) for data flash. While code executes from main flash memory, the data flash (8 KB) can be rewritten using the on-chip programming controller - enabling seamless parameter updates, calibration storage, or firmware patching without halting application logic or losing real-time responsiveness.