Renesas R5F101FGDFP#X0

Overview

R5F101FGDFP#X0 from Renesas is a 44-pin LQFP-packaged RL78/G13 16-bit microcontroller with 96 KB flash, 8 KB data flash, and 8 KB RAM, operating from 1.6 V to 5.5 V at up to 32 MHz (41 DMIPS), featuring ultra-low-power modes (0.57 μA RTC+LVD), 10-bit ADC (24 channels), and integrated UART/SPI/I²C interfaces - deployed in industrial sensor nodes and battery-powered control modules.

For engineers reviewing the R5F101FGDFP#X0 datasheet, R5F101FGDFP#X0 pinout, R5F101FGDFP#X0 application, or R5F101FGDFP#X0 equivalent, key selection criteria include its 44-pin LQFP-0.8 mm pitch package, absence of on-chip data flash (R5F101x series), -40°C to +85°C industrial temperature grade (D suffix), and support for SNOOZE mode DMA transfers during low-power operation.

Technical Context

The R5F101FGDFP#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 integrates a 12-bit interval timer, real-time clock with calendar/alarm, and watchdog timer driven by dedicated low-speed oscillator.

Its peripheral set includes up to 24-channel 10-bit ADC with internal 1.45 V reference and temperature sensor, 8× 16-bit timers, 3× I²C/Simplified I²C channels, 2× UART/LIN, and 2× CSI (SPI-compatible) interfaces - all configurable via register-based control without external glue logic.

Key Specifications

Pinout & Package

Package: 44-pin LQFP (10 × 10 mm, 0.8 mm pitch), 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 R5F101FGDFP#X0, R5F100FGDFP#X0 adds data flash for embedded parameter storage but increases cost and power in STOP mode; RL78/G14 R5F104BGDFP#X0 trades higher cost and complexity for CAN capability and doubled RAM - both require PCB layout review if replacing R5F101FGDFP#X0 in existing designs.

Availability

R5F101FGDFP#X0 is available at Aetrix Electronics and suitable for industrial motor monitors, smart thermostat controllers, programmable logic relays, and energy meter data loggers requiring stable component supply and long-term production continuity.

Supply support for R5F101FGDFP#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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power devices for industrial, automotive, and IoT markets.

The RL78/G13 product line targets cost-sensitive, ultra-low-power general-purpose applications - emphasizing energy efficiency, integrated peripherals, and seamless toolchain compatibility with e² studio and CS+ IDEs.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F101FGDFP#X0?

The R5F101FGDFP#X0 operates at up to 32 MHz with a peak performance of 41 DMIPS. This is achieved using the high-speed on-chip oscillator with ±1.0% accuracy across 1.8–5.5 V and –40°C to +85°C. The RL78 CPU core's 3-stage pipeline ensures predictable instruction timing critical for real-time control tasks executed by the R5F101FGDFP#X0.

Does the R5F101FGDFP#X0 include on-chip data flash memory?

No, the R5F101FGDFP#X0 does not include on-chip data flash memory. As indicated by the "101" in its part number per Renesas documentation, this variant belongs to the data-flash-less family. Designers must implement external nonvolatile storage (e.g., SPI FRAM or EEPROM) for configuration parameters or logging data when using the R5F101FGDFP#X0.

What package type and pin pitch does the R5F101FGDFP#X0 use?

The R5F101FGDFP#X0 uses a 44-pin plastic LQFP package with 10 mm × 10 mm body size and 0.8 mm pin pitch. The "FP" in the suffix denotes LQFP, and "#X0" indicates embossed tape packaging. This package is compatible with standard surface-mount assembly processes and offers robust thermal and mechanical performance for industrial environments where the R5F101FGDFP#X0 is deployed.

What low-power modes are supported by the R5F101FGDFP#X0, and what are their typical current draws?

The R5F101FGDFP#X0 supports HALT mode (66 μA/MHz), STOP mode (0.57 μA with RTC + LVD active), and SNOOZE mode (enables peripheral operation during low-power CPU halt). These modes are confirmed in the RL78/G13 datasheet Rev.3.80 and allow the R5F101FGDFP#X0 to meet stringent energy budgets in battery-operated industrial sensors and portable instrumentation.

How many analog input channels and what ADC resolution does the R5F101FGDFP#X0 provide?

The R5F101FGDFP#X0 integrates a 10-bit successive-approximation ADC with up to 24 analog input channels (ANI0–ANI23), including dedicated AVREFP/AVREFM pins and an internal 1.45 V reference. This ADC supports simultaneous sampling in certain configurations and is usable across the full 1.6–5.5 V supply range - a key capability leveraged in precision sensing applications using the R5F101FGDFP#X0.