Renesas R5F10RLCGNB#W0

Overview

R5F10RLCGNB#W0 from Renesas is a 64-pin HWQFN-packaged 16-bit RL78/L12 microcontroller with 32 KB flash, 2 KB data flash, 1.5 KB RAM, integrated LCD controller/driver (up to 39 seg × 8 com), and ultra-low-power operation (0.64 µA in RTC+LVD halt mode). It delivers 31 DMIPS at 24 MHz and supports 1.6–5.5 V supply for industrial LCD-based metering and control systems.

For engineers reviewing the R5F10RLCGNB#W0 datasheet, R5F10RLCGNB#W0 pinout, R5F10RLCGNB#W0 application, or R5F10RLCGNB#W0 equivalent, key selection criteria include its 64-pin HWQFN (8 × 8 mm, 0.4 mm pitch) package, on-chip LCD drive capability with capacitor split/internal boost methods, 10-bit ADC (10 channels), real-time clock with calendar/alarm, and IEC/UL 60730 safety features for certified embedded designs.

Technical Context

The R5F10RLCGNB#W0 implements a Harvard-architecture 16-bit RL78 CPU core with 3-stage pipeline, executing 86% of instructions in 1–2 clock cycles. It integrates dual power domains (VDD/EVDD, VSS/EVSS) for noise-sensitive LCD applications and supports peripheral I/O redirection via PIOR register for flexible pin assignment.

Its timing subsystem includes a high-speed on-chip oscillator (24 MHz ±1% over voltage/temperature), low-speed on-chip oscillator (15 kHz), and external crystal support (X1/X2 for main clock, XT1/XT2 for subsystem clock). The LCD controller supports waveform types A/B, 16-step contrast adjustment, blinking, and three drive methods - capacitor split, internal voltage boost, and resistance division.

Key Specifications

Pinout & Package

Package: HWQFN-64 (8 × 8 mm, 0.4 mm pitch) with exposed die pad; requires EVSS = VSS and EVDD = VDD per datasheet cautions. REGC must be decoupled to VSS with 0.47–1 µF capacitor.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F10RLAGNB#W0, the R5F10RLCGNB#W0 provides double flash capacity for complex UI logic and firmware updates; versus R5F10RLCGFA#V0, it offers 36% smaller board area and improved thermal performance via exposed pad, at the cost of tighter assembly requirements.

Availability

R5F10RLCGNB#W0 is available at Aetrix Electronics and suitable for industrial metering, HVAC controls, portable medical instrumentation, and gas detection systems requiring stable component supply and long-term lifecycle assurance.

Supply support for R5F10RLCGNB#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 specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/L12 product line targets ultra-low-power LCD-based applications, integrating specialized display drivers, precision RTC, and functional safety features to simplify design of certified industrial and consumer HMI systems.

FAQ

What is the operating temperature range for the R5F10RLCGNB#W0?

The R5F10RLCGNB#W0 is rated for industrial operation from −40°C to +105°C (G-grade), validated across full voltage range (1.6–5.5 V) and all low-power modes. This specification is confirmed in the RL78/L12 datasheet Rev.2.23, Section 1.3.5 and Table 1-1, where "G" in the part number denotes industrial temperature grade.

Does the R5F10RLCGNB#W0 support hardware debugging without external tools?

Yes, the R5F10RLCGNB#W0 includes a 1-wire on-chip debug interface accessible via TOOL0/P40 pin, enabling full in-circuit debugging, flash programming, and real-time trace without JTAG/SWD adapters. This capability is documented in Section 1.1 Features and Block Diagrams (Pages 13–17) of the R01DS0157EJ0223 datasheet.

How many LCD segments and commons does the R5F10RLCGNB#W0 support?

The R5F10RLCGNB#W0 supports up to 39 segment outputs (SEG0–SEG38) and 8 common outputs (COM0–COM7), enabling configurations such as 39×8 or 35×4 multiplexed LCDs. This is specified in Section 1.3.5 (64-pin products), Section 1.5.5 block diagram, and Table 1-6 (Outline of Functions, Page 18).

What are the key low-power modes and their typical current consumption for R5F10RLCGNB#W0?

The R5F10RLCGNB#W0 offers Halt mode (RTC + LVD enabled) at 0.64 µA, Stop mode (RAM retained) at 0.23 µA, and active operation at 62.5 µA/MHz. These values are measured at VDD = 3.0 V, TA = 25°C, and are listed in Section 1.1 Features (Page 1) of the R01DS0157EJ0223 datasheet.

Is the R5F10RLCGNB#W0 compliant with IEC/UL 60730 safety standards?

Yes, the R5F10RLCGNB#W0 includes hardware safety features required for Class B compliance: flash memory CRC calculation, RAM parity error check, SFR write protection, illegal memory access detection, clock frequency detection, and ADC self-test - all explicitly listed in Section 1.1 Features (Page 1) of the R01DS0157EJ0223 datasheet.