Renesas R5F100BEANA#U0

Overview

R5F100BEANA#U0 from Renesas is a 32-pin HWQFN-packaged RL78/G13 16-bit microcontroller with 64 KB flash, 4 KB data flash, and 4 KB RAM, operating from 1.6 V to 5.5 V. It delivers 41 DMIPS at 32 MHz, features ultra-low-power HALT/STOP/SNOOZE modes (0.57 μA RTC+LVD), and integrates 10-bit ADC (26 channels), RTC, UART, I²C, CSI, 16-bit timers, and on-chip debug.

For engineers reviewing the R5F100BEANA#U0 datasheet, R5F100BEANA#U0 pinout, R5F100BEANA#U0 application, or R5F100BEANA#U0 equivalent, key selection criteria include its 32-pin HWQFN-0.5mm package, 64 KB code flash with self-programming, 10-bit ADC resolution with internal temperature sensor, and industrial-grade -40°C to +85°C operation.

Technical Context

The R5F100BEANA#U0 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, supporting instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz subsystem clock). It includes a 2-channel DMA controller with 2-clock transfers between SFR and RAM, and a 16×16→32-bit multiplier with 32÷32-bit divider.

Power management integrates on-chip POR and LVD with 14 selectable voltage detection levels, while timing subsystems combine a high-accuracy ±1.0% on-chip oscillator (selectable 1–32 MHz), 12-bit interval timer, calendar RTC with alarm/correction, and watchdog timer using dedicated low-speed oscillator.

Key Specifications

Pinout & Package

Package: 32-pin HWQFN (5 × 5 mm, 0.5 mm pitch), exposed thermal pad, RoHS-compliant, moisture sensitivity level 3.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit microcontroller applications.

Compared with R5F100BDANA#U0 and R5F101BEANA#U0, the R5F100BEANA#U0 uniquely balances 64 KB flash capacity, 4 KB rewritable data flash, and industrial temperature rating in a 32-pin HWQFN - making it optimal for upgradeable embedded systems requiring both code agility and persistent parameter storage.

Availability

R5F100BEANA#U0 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, home appliance control, and building automation panels requiring stable component supply across extended product lifecycles.

Supply support for R5F100BEANA#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 family targets cost-sensitive, ultra-low-power general-purpose applications - designed to replace legacy 8/16-bit MCUs with enhanced integration, energy efficiency, and development tool support.

FAQ

What is the maximum operating frequency and performance of the R5F100BEANA#U0?

The R5F100BEANA#U0 operates at up to 32 MHz, delivering 41 DMIPS. Its RL78 CPU core achieves a minimum instruction execution time of 0.03125 μs in high-speed mode using the on-chip oscillator. This performance level supports real-time control loops, sensor fusion, and lightweight communication stacks without external acceleration. The R5F100BEANA#U0 maintains deterministic timing across its full 1.6–5.5 V supply range.

Does the R5F100BEANA#U0 include an integrated RTC and what calendar functionality does it support?

Yes, the R5F100BEANA#U0 integrates a full-featured real-time clock with calendar support for 99 years, including alarm generation and automatic clock correction. It operates independently in STOP mode with only 0.57 μA consumption when powered by VDD, using either the 32.768 kHz crystal (via CLKP/CLKM) or internal sub-system clock. This eliminates need for external RTC ICs in time-stamped data logging or schedule-based control applications using the R5F100BEANA#U0.

What are the data flash capabilities of the R5F100BEANA#U0 and how is it managed during runtime?

The R5F100BEANA#U0 includes 4 KB of data flash rated for 1,000,000 write/erase cycles at VDD = 1.8–5.5 V. It supports background operation (BGO), allowing program execution from code flash while data flash is rewritten. The flash library reserves specific RAM regions (e.g., FEF00H for R5F100xE variants) for self-programming operations. This enables safe firmware updates and parameter storage without halting application logic - a key capability for field-upgradable devices built around the R5F100BEANA#U0.

Which communication interfaces are available on the R5F100BEANA#U0 and how many instances does it support?

The R5F100BEANA#U0 provides multiple serial interfaces: up to 2–4 UART channels (with LIN-bus support), 3–10 I²C/Simplified I²C channels, and 2–8 CSI (SPI-compatible) channels. For the 32-pin HWQFN variant, pin mapping supports at least two UARTs, two I²C buses, and two CSI modules simultaneously. All interfaces are accessible via multiplexed GPIO pins and configurable through dedicated SFRs - enabling flexible peripheral assignment in space-constrained designs using the R5F100BEANA#U0.

What low-power modes does the R5F100BEANA#U0 support and what are their typical current draws?

The R5F100BEANA#U0 supports HALT (66 μA/MHz), STOP (0.57 μA with RTC + LVD active), and SNOOZE modes. In STOP mode, only the RTC, LVD, and wakeup logic remain powered - ideal for battery-backed applications. HALT mode retains RAM and register contents while stopping the CPU clock, achieving sub-μA wake-up latency. These modes are controlled via dedicated system control registers and are fully documented in the R5F100BEANA#U0 hardware manual for deterministic power budgeting.