Renesas R5F101BEDNA#U0

Overview

R5F101BEDNA#U0 from Renesas is a 32-bit RL78/G13 microcontroller with 64 KB flash memory, 4 KB data flash, and 2 KB RAM, operating at up to 32 MHz (41 DMIPS), optimized for ultra-low-power embedded control in industrial temperature range (–40°C to +85°C) using HWQFN-32 package. It integrates 16-bit timer (12 channels), 10-bit ADC (12 channels), RTC, UART/SPI/I²C interfaces, and supports HALT/STOP/SNOOZE low-power modes.

For engineers reviewing the R5F101BEDNA#U0 datasheet, R5F101BEDNA#U0 pinout, R5F101BEDNA#U0 application, or R5F101BEDNA#U0 equivalent, key selection criteria include its 32-pin HWQFN footprint, absence of on-chip data flash (R5F101x series), industrial-grade temperature rating, and support for background data flash rewriting and real-time clock calendar functions.

Technical Context

The R5F101BEDNA#U0 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, enabling instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz subsystem clock). It features a 1 MB address space and four banks of 8-bit general-purpose registers.

Power management includes on-chip POR and LVD with 14 selectable voltage detection levels, DMA controller (2 channels), and multiple low-power modes - HALT (66 μA/MHz), STOP (0.57 μA with RTC+LVD active), and SNOOZE - making it suitable for battery-powered sensor nodes and energy-conscious control systems.

Key Specifications

Pinout & Package

Package: 32-pin HWQFN (5 × 5 mm, 0.5-mm pitch), exposed thermal pad, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100BEDNA#U0, the R5F101BEDNA#U0 reduces silicon area and bill-of-materials cost by omitting data flash, while maintaining identical code flash, RAM, and peripheral set - ideal for fixed-function firmware deployments. Against R5F101BEFNA#U0, it trades I/O scalability for compactness and lower assembly cost in space-constrained designs.

Availability

R5F101BEDNA#U0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostat controllers, and PLC I/O modules requiring stable component supply, long-term lifecycle support, and guaranteed traceability.

Supply support for R5F101BEDNA#U0 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 control, targeting cost-sensitive industrial and consumer applications requiring extended battery life and robust peripheral integration.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F101BEDNA#U0?

The R5F101BEDNA#U0 operates at up to 32 MHz using its high-speed on-chip oscillator, delivering 41 DMIPS of processing performance. Its RL78 CPU core supports variable instruction timing - minimum execution time is 0.03125 μs at 32 MHz - and can scale down to 32.768 kHz for ultra-low-power RTC operation with 30.5 μs per instruction.

Does the R5F101BEDNA#U0 include on-chip data flash memory?

No, the R5F101BEDNA#U0 does not include on-chip data flash memory. As indicated by the "101" in its part number per Renesas' naming convention, this variant provides 64 KB of code flash only. Data storage must be implemented externally or via code flash emulation techniques - unlike the R5F100x series which integrates 4 KB data flash.

What package type and pin count does the R5F101BEDNA#U0 use?

The R5F101BEDNA#U0 uses a 32-pin HWQFN (Heat Sink Quad Flat No-lead) package measuring 5 × 5 mm with 0.5-mm pitch and an exposed thermal pad. The "NA" in the part number explicitly denotes the HWQFN package type, and "#U0" indicates tray packaging for automated assembly.

What are the supported low-power modes and their typical current consumption for the R5F101BEDNA#U0?

The R5F101BEDNA#U0 supports HALT (66 μA/MHz), STOP (0.57 μA with RTC and LVD active), and SNOOZE modes. In STOP mode, only the 32.768 kHz subsystem clock remains active, sustaining RTC calendar, LVD monitoring, and wake-up capability - enabling multi-year operation on coin-cell batteries in sensor applications.

How many analog input channels and what ADC resolution does the R5F101BEDNA#U0 provide?

The R5F101BEDNA#U0 integrates a 10-bit successive-approximation ADC with 12 analog input channels (ANI0–ANI11). It includes internal 1.45 V reference voltage and a calibrated temperature sensor, both accessible in HS (high-speed main) mode - supporting precision sensor interfacing without external references.