Renesas R5F100LDGFB#X0

Overview

R5F100LDGFB#X0 from Renesas is a 64-pin LFQFP (10 × 10 mm, 0.5-mm pitch), industrial-grade RL78/G13 16-bit MCU with 128 KB flash, 8 KB data flash, 12 KB RAM, and operation from −40°C to +105°C. It integrates a 32-MHz RL78 CPU core delivering 41 DMIPS, ultra-low-power modes (0.57 μA in RTC+LVD mode), 16-bit timers (12 channels), 10-bit ADC (26 channels), and multiple serial interfaces including UART, I²C, and CSI for embedded control in constrained environments.

For engineers reviewing the R5F100LDGFB#X0 datasheet, R5F100LDGFB#X0 pinout, R5F100LDGFB#X0 application, or R5F100LDGFB#X0 equivalent, key selection criteria include its G-grade temperature rating, integrated data flash with 1M rewrite cycles, background operation during program execution, real-time clock with calendar/alarm, and support for low-voltage operation down to 1.6 V - critical for battery-powered industrial sensors and motor controllers.

Technical Context

The R5F100LDGFB#X0 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, enabling configurable instruction timing from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz subsystem clock). Its memory subsystem includes 128 KB code flash (1 KB block size), 8 KB data flash supporting background operation (BGO), and 12 KB on-chip RAM - all accessible under single 1.6–5.5 V supply.

Peripheral integration includes dual DMA controller (4 channels), 16-bit timer array (12 channels), real-time clock with calendar and correction function, watchdog timer with dedicated low-speed oscillator, and analog subsystem with 10-bit ADC (26 inputs), internal 1.45 V reference, and temperature sensor - optimized for deterministic real-time control and energy-efficient sensing.

Key Specifications

Pinout & Package

Package: 64-pin LFQFP (10 × 10 mm, 0.5-mm pitch), RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit microcontroller applications.

Compared with R5F100LDGFB#X0, R5F100LGFB#X0 trades flash capacity for lower unit cost without sacrificing temperature grade or peripheral set, while R5F101LDGFB#X0 removes data flash entirely - reducing die size and power but eliminating on-chip parameter retention capability.

Availability

R5F100LDGFB#X0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart HVAC controllers, and programmable logic relays requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F100LDGFB#X0 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, and power solutions for automotive, industrial, and IoT markets.

The RL78/G13 product line delivers true low-power 16-bit MCUs for cost-sensitive, energy-constrained industrial and consumer applications - balancing performance, integration, and ultra-low active/idle current.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating for the R5F100LDGFB#X0?

The R5F100LDGFB#X0 operates at up to 32 MHz using its high-speed on-chip oscillator and delivers 41 DMIPS at that frequency. This performance level is achieved with the RL78 CPU core's 3-stage pipeline and optimized instruction set, making it suitable for real-time control tasks such as motor commutation and sensor fusion without requiring external co-processors.

Does the R5F100LDGFB#X0 support in-system programming and secure firmware updates?

Yes, the R5F100LDGFB#X0 supports full in-system programming via its on-chip debug interface and includes boot swap functionality and flash shield window protection. These features allow authenticated firmware updates in the field while preventing unauthorized access to code flash contents - essential for maintaining security in deployed industrial devices.

How many analog input channels does the R5F100LDGFB#X0 support, and what is the ADC resolution?

The R5F100LDGFB#X0 integrates a 10-bit successive-approximation ADC with up to 26 analog input channels. It also includes an internal 1.45 V reference voltage and a calibrated temperature sensor - enabling accurate, self-contained environmental monitoring without external components.

What power-saving modes are available on the R5F100LDGFB#X0, and what is the lowest current consumption?

The R5F100LDGFB#X0 offers HALT, STOP, and SNOOZE modes. In STOP mode with only RTC and LVD active, it draws just 0.57 μA - verified across the full −40°C to +105°C industrial temperature range. This enables decade-scale battery operation in remote sensing and metering applications.

Is the R5F100LDGFB#X0 pin-compatible with other RL78/G13 variants in the same package?

Yes, the R5F100LDGFB#X0 is pin-compatible with all other RL78/G13 MCUs in the 64-pin LFQFP (FB) package, including R5F100LGFB#X0 and R5F101LDGFB#X0. Pin functions, power domains, and peripheral mappings are consistent - allowing hardware reuse across memory and feature variants during design scaling.