Renesas R5F100BDANA#20

Overview

R5F100BDANA#20 from Renesas is a 32-pin, 32 MHz RL78/G13 16-bit microcontroller with 32 KB flash memory, 2 KB RAM, and 4 KB data flash, operating from 1.6 V to 5.5 V across -40°C to +85°C industrial temperature range. It integrates a 10-bit ADC (26 channels), real-time clock, UART/SPI/I²C interfaces, 16-bit timers, and ultra-low-power modes (0.57 μA in RTC+LVD mode), targeting battery-powered sensor nodes and industrial control modules.

For engineers reviewing the R5F100BDANA#20 datasheet, R5F100BDANA#20 pinout, R5F100BDANA#20 application, or R5F100BDANA#20 equivalent, key selection criteria include its HWQFN-32 package, integrated data flash with background operation, low-voltage operation down to 1.6 V, and support for SNOOZE mode wake-up via peripheral interrupts - all critical for energy-constrained embedded designs.

Technical Context

The R5F100BDANA#20 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction timing (0.03125 μs min @ 32 MHz). It supports multiple clock sources including a high-accuracy ±1.0% on-chip oscillator (selectable 1–32 MHz) and subsystem clock (32.768 kHz).

Its peripheral set includes up to 16-channel 16-bit timers, one 12-bit interval timer, one calendar-capable RTC with alarm and correction, and DMA controller with 2 channels enabling zero-wait-state transfers between SFR and RAM in just two clocks per 8/16-bit word.

Key Specifications

Pinout & Package

Package: HWQFN-32 (5 mm × 5 mm, 0.5 mm pitch), wettable flank, RoHS-compliant, thermal pad exposed on bottom.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100BDANA#20, R5F101BDANA#20 removes data flash but retains full code flash and low-power capability - ideal for cost-sensitive fixed-function devices; R5F104BDANA#20 adds CAN and higher-resolution ADC at higher BOM cost and power, making it suitable for automotive-adjacent or advanced motor control roles.

Availability

R5F100BDANA#20 is available at Aetrix Electronics and suitable for smart sensor nodes, industrial HMI panels, and energy meter subsystems requiring stable component supply, long-term lifecycle support, and industrial-grade temperature compliance.

Supply support for R5F100BDANA#20 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, and power solutions for industrial, automotive, and IoT markets.

The RL78/G13 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive, battery-operated, and industrial control applications where reliability, code density, and mixed-signal integration are critical.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F100BDANA#20?

The R5F100BDANA#20 operates at up to 32 MHz with an RL78 CPU core delivering 41 DMIPS. Its minimum instruction execution time is 0.03125 μs under high-speed on-chip oscillator conditions. This performance level supports real-time control loops, sensor fusion algorithms, and protocol stack processing in compact embedded systems without requiring external memory or accelerators.

Does the R5F100BDANA#20 support in-system programming and secure firmware updates?

Yes, the R5F100BDANA#20 supports full in-system programming via its on-chip debug interface and includes boot swap functionality plus flash shield window protection. These features allow safe field firmware updates by maintaining dual bank structure and preventing unauthorized access to protected code regions - essential for certified industrial deployments where firmware integrity is mandated.

How does the R5F100BDANA#20 manage power in battery-operated applications?

The R5F100BDANA#20 provides three ultra-low-power modes: HALT (66 μA/MHz), STOP (0.57 μA with RTC and LVD active), and SNOOZE (fast wake from peripheral events). Its 1.6 V minimum operating voltage extends usable battery range, and the RTC maintains calendar time with alarm and correction functions - enabling precise wake scheduling for periodic sensing without external components.

What analog capabilities does the R5F100BDANA#20 offer for sensor interfacing?

The R5F100BDANA#20 integrates a 10-bit successive-approximation ADC with up to 26 input channels, internal 1.45 V reference voltage, and on-chip temperature sensor. It supports simultaneous sampling with programmable conversion timing and flexible trigger sources (software, timer, or peripheral events), making it suitable for multi-sensor monitoring in environmental, metering, and diagnostic applications.

Is the R5F100BDANA#20 pin-compatible with other RL78/G13 variants in the same package?

Yes, all RL78/G13 devices in the HWQFN-32 package - including R5F100BAANA#20, R5F100BCANA#20, and R5F100BGANA#20 - share identical pinouts and mechanical footprint. This allows direct substitution within the same memory/feature tier (e.g., 32 KB flash, D-temp grade) without PCB redesign, simplifying design reuse and migration paths across performance points.