Renesas R5F100LHDFA#X0

Overview

R5F100LHDFA#X0 from Renesas is a 64-pin LQFP-0.65mm MCU in the RL78/G13 family, featuring 128 KB flash, 8 KB data flash, 12 KB RAM, 16-bit RL78 CPU core, and real-time clock with calendar function. It operates from 1.6 V to 5.5 V, achieves 41 DMIPS at 32 MHz, and supports ultra-low-power modes (0.57 μA in RTC+LVD mode), targeting battery-powered industrial control and sensor nodes.

For engineers reviewing the R5F100LHDFA#X0 datasheet, R5F100LHDFA#X0 pinout, R5F100LHDFA#X0 application, or R5F100LHDFA#X0 equivalent, key selection criteria include its 64-pin LQFP-0.65mm package, integrated RTC with alarm/calendar, 10-bit 26-channel ADC, dual UART/LIN support, and hardware multiplier/divider for deterministic control math.

Technical Context

The R5F100LHDFA#X0 implements the RL78 CISC CPU core with 3-stage pipeline and configurable instruction timing (0.03125 μs min @ 32 MHz). It integrates a 12-bit interval timer, watchdog timer with dedicated low-speed oscillator, and background operation (BGO) for data flash rewriting while executing code from program memory.

Its peripheral set includes up to 16 channels of 16-bit timer, 3–10 I²C/Simplified I²C channels, 2–4 UART/LIN interfaces, and 2–8 CSI (SPI-compatible) channels - all mapped to dedicated SFRs with DMA support across 2/4 channels for zero-CPU-transfer data movement.

Key Specifications

Pinout & Package

Package: 64-pin LQFP, 12 × 12 mm, 0.65-mm pitch (JEDEC MS-026AC), RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100LHDFA#X0, R5F101LHDFA#X0 removes data flash to reduce cost and die size but sacrifices embedded parameter retention, while R5F100LJDFB#X0 maintains full feature parity but demands layout revision for finer-pitch assembly and targets narrower industrial temperature use cases.

Availability

R5F100LHDFA#X0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart metering interfaces, and home appliance control systems requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for R5F100LHDFA#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, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/G13 product line delivers true low-power performance for general-purpose embedded applications, emphasizing energy efficiency, integrated analog peripherals, and robust development tooling for rapid time-to-market.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating for the R5F100LHDFA#X0?

The R5F100LHDFA#X0 operates at up to 32 MHz with an RL78 CPU core delivering 41 DMIPS. This performance level is achieved using the high-speed on-chip oscillator at 32 MHz, and the DMIPS value reflects Dhrystone 2.1 benchmark results under those conditions. The R5F100LHDFA#X0 maintains this throughput across its full 1.6 V to 5.5 V supply range.

Does the R5F100LHDFA#X0 support hardware-based real-time clock functionality with calendar features?

Yes, the R5F100LHDFA#X0 includes a dedicated real-time clock (RTC) module supporting full calendar functions for 99 years, alarm generation, and automatic clock correction. It operates independently in STOP mode with only RTC and LVD active, consuming just 0.57 μA - a key enabler for time-critical, battery-operated applications requiring accurate timestamping without CPU intervention.

How much data flash memory does the R5F100LHDFA#X0 integrate, and what are its endurance and voltage requirements?

The R5F100LHDFA#X0 integrates 8 KB of on-chip data flash memory rated for 1,000,000 write/erase cycles (typical). It supports background operation (BGO), allowing program execution from code flash while rewriting data flash. Voltage requirements for rewrites are VDD = 1.8 V to 5.5 V, matching the device's operational supply range and eliminating need for charge pumps or auxiliary supplies.

What ADC resolution, channel count, and reference options are available on the R5F100LHDFA#X0?

The R5F100LHDFA#X0 features a 10-bit successive-approximation ADC with up to 26 analog input channels. It supports both external reference voltages and an internal 1.45 V reference. Reference inputs AVREFP and AVREFM are assigned to pins P20 and P21, enabling either single-ended or differential measurement configurations depending on system accuracy and noise requirements.

Is the R5F100LHDFA#X0 pin-compatible with other RL78/G13 variants in the same 64-pin LQFP package?

Yes, the R5F100LHDFA#X0 shares identical pinout and electrical characteristics with all other RL78/G13 devices in the 64-pin LQFP-0.65mm package (e.g., R5F100LCAFA#X0, R5F100LLAFA#X0), regardless of flash/RAM configuration. This allows hardware reuse across firmware variants and simplifies design scalability - for example, upgrading from 64 KB to 128 KB flash requires only a BOM change, not PCB revision.