Renesas R5F100BAGNA#U0

Overview

R5F100BAGNA#U0 from Renesas is a 32-pin RL78/G13 16-bit microcontroller with 128 KB flash, 8 KB data flash, and 12 KB RAM, operating at up to 32 MHz with 41 DMIPS performance. It features ultra-low-power operation (66 μA/MHz active, 0.57 μA RTC+LVD), integrated 10-bit ADC (26 channels), real-time clock, UART/SPI/I²C interfaces, and operates from 1.6–5.5 V for battery-powered industrial sensor nodes.

For engineers reviewing the R5F100BAGNA#U0 datasheet, R5F100BAGNA#U0 pinout, R5F100BAGNA#U0 application, or R5F100BAGNA#U0 equivalent, key selection criteria include its HWQFN-32 package, -40°C to +105°C industrial temperature grade (G suffix), on-chip debug support, self-programmable flash with boot swap, and BGO-capable data flash for background rewriting during runtime.

Technical Context

The R5F100BAGNA#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 ultra-low-speed mode). Its memory subsystem includes 128 KB code flash (1 KB block size), 8 KB data flash with 1M write endurance, and 12 KB SRAM - all accessible under single-supply 1.6–5.5 V operation.

Peripheral integration includes eight 16-bit timers, one 12-bit interval timer, calendar-mode RTC with alarm/correction, watchdog timer, DMA controller (4 channels), 16×16/32÷32 multiplier/divider, and serial interfaces: up to 8 CSI (SPI-compatible), 4 UART/LIN, and 10 I²C channels - all configurable via dedicated SFRs and interrupt vectors.

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 R5F100BAGNA#U0, R5F101BGANA#U0 removes data flash but retains identical code density and low-power profile, while R5F104BAANA#U0 upgrades memory and analog resolution at the cost of higher active current and pin count - making it optimal for next-generation designs requiring scalability.

Availability

R5F100BAGNA#U0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart metering systems, and home appliance controllers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R5F100BAGNA#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 delivers true low-power embedded control for cost-sensitive industrial and consumer applications - balancing performance, energy efficiency, and peripheral integration in compact packages.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating of the R5F100BAGNA#U0?

The R5F100BAGNA#U0 operates at up to 32 MHz with a measured performance of 41 DMIPS. This is achieved using the high-speed on-chip oscillator, which maintains ±1.0% accuracy across the full industrial temperature range (-40°C to +105°C) and supply voltage (1.8–5.5 V).

Does the R5F100BAGNA#U0 support background data flash rewriting while executing application code?

Yes, the R5F100BAGNA#U0 supports Background Operation (BGO) for data flash. This allows the CPU to execute instructions from program memory while simultaneously rewriting data flash - critical for logging sensor data or updating configuration parameters without interrupting real-time tasks.

What is the analog input capability of the R5F100BAGNA#U0, including channel count and resolution?

The R5F100BAGNA#U0 integrates a 10-bit successive-approximation ADC with up to 26 analog input channels. It includes an internal 1.45 V reference voltage and a calibrated temperature sensor - both usable without external components, simplifying design for environmental monitoring applications.

How does the R5F100BAGNA#U0 achieve ultra-low-power operation in STOP mode?

In STOP mode, the R5F100BAGNA#U0 draws only 0.57 μA while maintaining RTC operation and low-voltage detection (LVD). This is enabled by selective clock gating, retention of RAM and register contents, and independent RTC oscillator circuitry - allowing wake-up via RTC alarm or external interrupt with sub-10 μs latency.

Is the R5F100BAGNA#U0 pin-compatible with other RL78/G13 devices in the HWQFN-32 package?

Yes, the R5F100BAGNA#U0 shares identical pinout and footprint with all other RL78/G13 variants in the 32-pin HWQFN package (e.g., R5F100BCGNA#U0, R5F100BDGNA#U0), enabling hardware reuse across memory/configurations - provided peripheral assignments and software initialization match the target variant's feature set.