Renesas R5F100BEDNA#U0

Overview

R5F100BEDNA#U0 from Renesas is a 32-pin HWQFN-packaged 16-bit RL78/G13 microcontroller with 64 KB flash, 4 KB data flash, and 4 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), integrated 10-bit ADC (26-channel), and real-time clock with calendar support - deployed in industrial sensor nodes and battery-powered control modules.

For engineers reviewing the R5F100BEDNA#U0 datasheet, R5F100BEDNA#U0 pinout, R5F100BEDNA#U0 application, or R5F100BEDNA#U0 equivalent, key selection criteria include its 32-pin HWQFN-0.5 mm pitch package, 64 KB code flash with self-programming and flash shield window, 10-bit ADC accuracy over full VDD range (1.6–5.5 V), and industrial-grade temperature rating (−40°C to +85°C).

Technical Context

The R5F100BEDNA#U0 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 on-chip power-on-reset (POR), voltage detector (LVD) with 14 selectable levels, and DMA controller with 2 channels enabling 2-clock transfers between SFR and RAM.

Its peripheral set includes up to 16 × 16-bit timers, one 12-bit interval timer, one real-time clock with calendar/alarm/correction, one watchdog timer, and serial interfaces: 2–4 UART/LIN channels, 2–8 CSI (SPI-compatible), and 3–10 I²C/Simplified I²C channels - all configurable for mixed-signal industrial control tasks requiring low-power operation and deterministic timing.

Key Specifications

Pinout & Package

Package: 32-pin HWQFN (5 × 5 mm, 0.5 mm pitch), exposed thermal pad, RoHS-compliant, JEDEC MO-220 compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100BEDNA#U0, the R5F100BEGNA#U0 offers extended temperature and oscillator accuracy at higher cost, while R5F101BEDNA#U0 removes data flash to reduce unit price and qualification scope - both retain identical code flash size, RAM, and peripheral count for drop-in layout reuse.

Availability

R5F100BEDNA#U0 is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, wireless sensor nodes, and home appliance control requiring stable component supply across multi-year production cycles.

Supply support for R5F100BEDNA#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 delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/G13 family targets cost-sensitive, ultra-low-power general-purpose embedded applications - balancing performance, integration, and energy efficiency for battery-operated and thermally constrained systems.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating of the R5F100BEDNA#U0?

The R5F100BEDNA#U0 operates at up to 32 MHz with a measured performance of 41 DMIPS. This rating reflects its RL78 CPU core's 3-stage pipeline efficiency and is validated across the full industrial temperature range (−40°C to +85°C). The high-speed on-chip oscillator supports this frequency without external components, and instruction timing scales linearly down to 32.768 kHz for ultra-low-power RTC operation.

Does the R5F100BEDNA#U0 include on-chip debug capability and what interfaces does it support?

Yes, the R5F100BEDNA#U0 includes full on-chip debug functionality accessible via the single-wire debug (SWD) interface using the TOOLx pins. It supports breakpoints, watchpoints, real-time variable monitoring, and flash programming through Renesas' E2 studio and CS+ IDEs. No external JTAG adapter is required - debug connection uses only two pins (TOOLRxD/TOOLTxD) in standard configurations.

How many analog input channels does the R5F100BEDNA#U0 support and what is the ADC reference configuration?

The R5F100BEDNA#U0 supports up to 26 analog input channels via its 10-bit successive-approximation ADC. It provides internal AVREFP/AVREFM pins for differential reference, plus a factory-trimmed 1.45 V internal reference voltage usable across the full 1.6–5.5 V VDD range. External references are also supported, and the ADC maintains specified linearity and offset accuracy regardless of supply voltage.

What packaging and thermal characteristics define the R5F100BEDNA#U0's mechanical implementation?

The R5F100BEDNA#U0 is supplied in a 32-pin HWQFN package (5 × 5 mm, 0.5 mm pitch) with an exposed thermal pad. Its thermal resistance (θ_JA) is 40°C/W, and it is rated for industrial temperature operation (−40°C to +85°C). The package complies with JEDEC MO-220 and RoHS standards, and the thermal pad must be soldered to a PCB copper plane for optimal power dissipation and signal integrity in continuous 32 MHz operation.

Can the R5F100BEDNA#U0 perform flash self-programming while executing application code, and what safeguards exist?

Yes, the R5F100BEDNA#U0 supports self-programming of both code and data flash while running application code. Code flash updates use the boot swap function for safe firmware upgrades, and data flash supports background operation (BGO) - allowing instruction fetch from program memory during write/erase. Security features include flash block erase prohibition and flash shield window to prevent unauthorized access to protected memory regions during debugging or field operation.