Renesas R5F100BGGNA#20

Overview

R5F100BGGNA#20 from Renesas is a 32-pin, 128 KB flash, 8 KB data flash, 12 KB RAM RL78/G13 16-bit microcontroller with ultra-low-power operation (66 μA/MHz active, 0.57 μA RTC+LVD mode), 1.6–5.5 V supply, and industrial-grade −40°C to +105°C operation. It integrates 16-bit timer (16 ch), 10-bit ADC (26 ch), real-time clock, UART/LIN, I²C, CSI, DMA, and hardware multiplier/divider for embedded control in battery-powered and thermally constrained systems.

For engineers reviewing the R5F100BGGNA#20 datasheet, R5F100BGGNA#20 pinout, R5F100BGGNA#20 application, or R5F100BGGNA#20 equivalent, key selection considerations include its VFBGA-32 package with 0.4 mm pitch, G-grade temperature rating, on-chip debug support, self-programmable flash with boot swap, and background data flash rewriting capability.

Technical Context

The R5F100BGGNA#20 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 features dual-clock domains: high-speed on-chip oscillator (±1.0% accuracy, selectable 1–32 MHz) and dedicated low-speed oscillator for watchdog and RTC.

Its peripheral set includes 16-channel 16-bit timer array with input capture/compare, 10-bit A/D converter with up to 26 analog inputs and internal 1.45 V reference, and three serial interface types-CSI (SPI-compatible), UART/LIN, and I²C-each configurable across multiple channels with independent clock sources and interrupt triggers.

Key Specifications

Pinout & Package

VFBGA-32 package (3.0 × 3.0 mm, 0.4 mm pitch), 32-terminal ball grid array with exposed thermal pad. Pin mapping conforms to RL78/G13 32-pin VFBGA standard layout (P10–P17, P20–P27, P30–P37, P40–P47, P50–P57, P60–P67, P70–P77, P80–P87, P90–P97, P100–P107, P110–P117, P120–P127, P130–P137, P140–P147).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100BGGNA#20, R5F100BGGLA#U0 offers smaller footprint but fewer I/Os and inferior thermal dissipation, while R5F101BGGLA#U0 removes data flash entirely - making it unsuitable for autonomous parameter storage or over-the-air update readiness.

Availability

R5F100BGGNA#20 is available at Aetrix Electronics and suitable for smart metering, industrial motor drives, portable medical devices, and building automation sensors requiring stable component supply, long-term industrial qualification, and full lifecycle support.

Supply support for R5F100BGGNA#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, power, and SoC solutions for automotive, industrial, and enterprise markets.

The RL78/G13 product line delivers ultra-low-power 16-bit MCUs targeting cost-sensitive, battery-operated, and thermally demanding embedded applications - emphasizing energy efficiency, integrated analog, and robust industrial qualification.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating for the R5F100BGGNA#20?

The R5F100BGGNA#20 operates at up to 32 MHz with a measured performance of 41 DMIPS. This benchmark reflects its RL78 CPU core's 3-stage pipeline efficiency and instruction mix optimization, enabling deterministic real-time response in control loops and communication stacks without requiring higher-clock-rate alternatives.

Does the R5F100BGGNA#20 support in-system programming and debug interfaces?

Yes, the R5F100BGGNA#20 supports on-chip debug via single-wire SWD interface compatible with Renesas E2 emulator and CS+ IDE. It also enables in-system programming through its built-in bootloader and self-programming flash capability - allowing firmware updates over UART, LIN, or custom protocols without external programmers.

What are the key differences between the R5F100BGGNA#20 and R5F101BGGNA#20?

The R5F100BGGNA#20 includes 8 KB of data flash memory with background operation (BGO) and flash shield window security, while R5F101BGGNA#20 omits data flash entirely. Both share identical code flash (128 KB), RAM (12 KB), package (VFBGA-32), and peripheral sets - making R5F100BGGNA#20 the only choice for applications needing nonvolatile parameter storage or field-upgradable calibration data.

How does the R5F100BGGNA#20 achieve its 0.57 μA STOP mode current?

The R5F100BGGNA#20 achieves 0.57 μA in STOP mode by powering down the CPU, flash, RAM, and most peripherals while retaining operation of the real-time clock (RTC), low-voltage detector (LVD), and dedicated low-speed oscillator. This selective retention enables wake-up via RTC alarm or external interrupt with sub-millisecond latency and no firmware reinitialization overhead.

Is the R5F100BGGNA#20 pin-compatible with other RL78/G13 variants in the same package?

Yes, all RL78/G13 devices in the VFBGA-32 package (e.g., R5F100AGGNA#20, R5F100CGGNA#20, R5F100BGGNA#20) share identical pinouts and electrical characteristics. Memory size and feature enablement (e.g., data flash presence) are determined by internal mask options - enabling scalable design reuse across performance tiers without PCB revision.