Renesas R5F101LHDFB#X0

Overview

R5F101LHDFB#X0 from Renesas is a 64-pin LFQFP (10 × 10 mm, 0.5-mm pitch), 192 KB flash, 8 KB data flash, 16 KB RAM RL78/G13 16-bit microcontroller operating from 1.6 V to 5.5 V, delivering 41 DMIPS at 32 MHz with ultra-low-power modes (0.57 μA RTC+LVD). It targets battery-powered industrial control and sensor interface applications requiring high integration and long runtime.

For engineers reviewing the R5F101LHDFB#X0 datasheet, R5F101LHDFB#X0 pinout, R5F101LHDFB#X0 application, or R5F101LHDFB#X0 equivalent, key selection criteria include its 64-pin LFQFP-0.5mm package, absence of on-chip data flash (R5F101x series), -40°C to +85°C industrial temperature grade (D suffix), and support for multiple serial interfaces (CSI, UART/LIN, I²C) and 16-channel 16-bit timers.

Technical Context

The R5F101LHDFB#X0 implements the RL78 CPU core with a 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz ultra-low-speed mode). Its memory map spans 1 MB address space with banked 8-bit general-purpose registers.

It integrates a 12-bit interval timer, real-time clock with calendar/alarm/correction, watchdog timer with dedicated low-speed oscillator, and an 8/10-bit A/D converter with up to 26 analog inputs and internal 1.45 V reference voltage - all operating across the full 1.6–5.5 V supply range.

Key Specifications

Pinout & Package

Package: 64-pin LFQFP (10 × 10 mm, 0.5-mm pitch), RoHS-compliant, moisture sensitivity level (MSL) 3 per J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F101LHDFB#X0, R5F100LHDFB#X0 adds data flash for field-updatable calibration tables, while R5F101LJDFB#X0 provides headroom for larger firmware images and deeper data buffers - both retain identical peripheral sets and low-power behavior.

Availability

R5F101LHDFB#X0 is available at Aetrix Electronics and suitable for industrial automation, smart metering, and battery-powered sensor systems requiring stable component supply across extended product lifecycles.

Supply support for R5F101LHDFB#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 family delivers true low-power performance (66 μA/MHz, 0.57 μA STOP) for cost-sensitive industrial and consumer devices needing rich peripherals, robust code security, and long operational life on minimal power.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F101LHDFB#X0?

The R5F101LHDFB#X0 operates at up to 32 MHz using its high-accuracy on-chip oscillator (±1.0%), delivering 41 DMIPS. This performance level supports real-time control loops, sensor fusion algorithms, and lightweight protocol stacks while maintaining ultra-low power consumption - a key advantage of the RL78/G13 architecture over legacy 8-bit MCUs.

Does the R5F101LHDFB#X0 include on-chip data flash memory?

No, the R5F101LHDFB#X0 does not include on-chip data flash memory. As indicated by the "101" prefix in its part number (per Renesas RL78/G13 documentation), this variant provides only code flash (192 KB) and relies on external nonvolatile memory or RAM-based parameter storage. In contrast, R5F100x series parts include 4–8 KB of data flash.

What is the operating temperature range specified for the R5F101LHDFB#X0?

The R5F101LHDFB#X0 is rated for industrial operation from –40°C to +85°C, as confirmed by the "D" suffix in its ordering code. This rating applies across all electrical specifications including flash programming, ADC accuracy, and oscillator stability - making it suitable for deployment in uncontrolled environments such as factory floors or outdoor enclosures.

Which package type and pin count does the R5F101LHDFB#X0 use?

The R5F101LHDFB#X0 uses a 64-pin LFQFP package with 0.5-mm pitch (10 × 10 mm body), denoted by the "FB" suffix. This fine-pitch quad flat package offers high I/O density and thermal performance while remaining compatible with standard surface-mount assembly processes - distinct from LQFP (0.65-mm pitch) or QFN variants in the same family.

How many serial communication interfaces does the R5F101LHDFB#X0 support?

The R5F101LHDFB#X0 supports up to 8 CSI (Simplified SPI) channels, 4 UART/LIN channels (with LIN bus compliance), and 10 I²C/Simplified I²C channels - with significant pin multiplexing enabling concurrent use of multiple protocols. This flexibility allows designers to interface with diverse sensors, displays, and communication modules without external bridging logic.