Renesas R5F101FHDFP#X0

Overview

R5F101FHDFP#X0 from Renesas is a 44-pin LQFP-packaged RL78/G13 16-bit MCU with 96 KB flash, 8 KB data flash, and 8 KB RAM, operating at up to 32 MHz with 41 DMIPS performance and ultra-low-power modes (0.57 μA in RTC+LVD mode). It integrates 12-bit ADC (24 channels), UART/LIN, I²C, SPI, 16-bit timers, RTC, and on-chip debug.

For engineers reviewing the R5F101FHDFP#X0 datasheet, R5F101FHDFP#X0 pinout, R5F101FHDFP#X0 application, or R5F101FHDFP#X0 equivalent, this device is selected for cost-sensitive, battery-powered industrial control, sensor nodes, and appliance HMI where low active current (66 μA/MHz), integrated peripherals, and AEC-Q100-qualified variants are critical.

Technical Context

The R5F101FHDFP#X0 implements the RL78 CPU core with 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 subsystem clock). It features dual-clock domains: high-speed on-chip oscillator (±1.0% accuracy, 1–32 MHz selectable) and dedicated low-speed oscillator for RTC/WDT.

Peripherals include 3-channel I²C/Simplified I²C, 2–4 UART/LIN interfaces, 2–8 CSI (SPI-compatible) channels, 8–16 × 16-bit timers, 1 × 12-bit interval timer, and 1 × real-time clock with calendar, alarm, and clock correction-enabling precise timekeeping without external components.

Key Specifications

Pinout & Package

Package: 44-pin LQFP (10 × 10 mm, 0.8-mm pitch), RoHS-compliant, moisture sensitivity level MSL3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F101FHDFP#X0, R5F101FHAFP#V0 offers identical functionality with different packaging logistics, while R5F100FHDFP#X0 reduces data flash capacity and removes background operation-making it appropriate only for less demanding data retention requirements.

Availability

R5F101FHDFP#X0 is available at Aetrix Electronics and suitable for industrial motor controllers, smart home thermostats, and medical infusion pumps requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for R5F101FHDFP#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 targets cost-optimized, ultra-low-power general-purpose embedded applications-including appliances, industrial controls, and sensor nodes-balancing performance, integration, and energy efficiency.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating of the R5F101FHDFP#X0?

The R5F101FHDFP#X0 operates at up to 32 MHz with a measured performance of 41 DMIPS. This value reflects the RL78 CPU core's optimized 3-stage pipeline execution under typical conditions, validated per Renesas' R01DS0131EJ0380 datasheet Rev. 3.80. The R5F101FHDFP#X0 achieves this without external clock sources, using its factory-trimmed high-speed on-chip oscillator.

Does the R5F101FHDFP#X0 support background data flash rewriting while executing application code?

Yes, the R5F101FHDFP#X0 supports Background Operation (BGO) for data flash, allowing instructions to be fetched and executed from program memory during data flash erase/write cycles. This capability is confirmed in the RL78/G13 datasheet Section 1.1 Features and enables uninterrupted real-time tasks such as sensor logging or parameter updates. The R5F101FHDFP#X0 includes 8 KB of data flash with 1,000,000 write endurance.

What analog features are integrated into the R5F101FHDFP#X0, and how many input channels does the ADC support?

The R5F101FHDFP#X0 integrates a 12-bit successive-approximation ADC with 24 analog input channels, internal 1.45 V reference voltage, and an on-die temperature sensor. These features are explicitly listed in the "A/D converter" subsection of the datasheet's Feature list. The R5F101FHDFP#X0 uses the same ADC architecture across all RL78/G13 variants with ≥24-channel pinouts, and channel count is fixed by package pin availability-not user-configurable.

Is the R5F101FHDFP#X0 qualified for industrial temperature range operation, and what is the specified range?

Yes, the R5F101FHDFP#X0 is rated for industrial operation from −40°C to +85°C, indicated by the "D" suffix in its part number decoding (per Figure 1-1 and Table 1-1 of R01DS0131EJ0380). This specification is guaranteed across all operating voltages (1.6–5.5 V) and applies to all integrated peripherals, including the RTC, ADC, and oscillators. The R5F101FHDFP#X0 meets this range without derating.

How does the R5F101FHDFP#X0 implement low-power modes, and what is the lowest achievable current consumption?

The R5F101FHDFP#X0 supports HALT, STOP, and SNOOZE modes. Its lowest guaranteed current is 0.57 μA in STOP mode with only the real-time clock (RTC) and low-voltage detector (LVD) active-verified per datasheet Section 1.1. This ultra-low state retains RAM and register contents while disabling CPU, flash, and most peripherals. The R5F101FHDFP#X0 achieves this using dedicated low-leakage circuitry and automatic clock gating, independent of external components.