Renesas R5F100BEANA#40

Overview

R5F100BEANA#40 from Renesas is a 32-bit RL78/G13 microcontroller with 64 KB flash, 4 KB data flash, and 4 KB RAM in a 40-pin HWQFN (6 × 6 mm, 0.5-mm pitch) package. It operates from 1.6–5.5 V, delivers 41 DMIPS at 32 MHz, and supports ultra-low-power modes (66 μA/MHz active, 0.57 μA RTC+LVD). It targets battery-powered industrial sensors and smart metering interfaces requiring integrated A/D, RTC, and multiple serial peripherals.

For engineers reviewing the R5F100BEANA#40 datasheet, R5F100BEANA#40 pinout, R5F100BEANA#40 application, or R5F100BEANA#40 equivalent, key selection criteria include its 40-pin HWQFN footprint, 64 KB code flash with self-programming, 10-bit 26-channel ADC, real-time clock with calendar, and support for UART/LIN, I²C, and CSI (SPI-compatible) interfaces in a -40°C to +85°C industrial-grade variant.

Technical Context

The R5F100BEANA#40 implements the RL78 CPU core-a CISC architecture with 3-stage pipeline and configurable instruction timing (0.03125 μs min @ 32 MHz, 30.5 μs @ 32.768 kHz). It integrates a high-accuracy ±1.0% on-chip oscillator (selectable 1–32 MHz), DMA controller (4 channels), and multiplier/divider unit supporting 16×16→32-bit and 32÷32→32-bit operations.

Power management includes HALT, STOP, and SNOOZE modes, on-chip POR and LVD (14-level selectable), and voltage detection interrupt/reset capability. Peripheral integration covers up to 16× 16-bit timers, 1× 12-bit interval timer, 1× RTC with alarm/calendar, 1× watchdog timer, and 3–10-channel I²C/Simplified I²C-configured per pin mapping and memory variant.

Key Specifications

Pinout & Package

40-pin HWQFN (6 × 6 mm, 0.5-mm pitch) with exposed thermal pad (PWQN0040KC-A / PWQN0040KD-A). Pin count and I/O configuration align with RL78/G13 40-pin variant family; full pin assignment requires device-specific pin configuration table (R01DS0131EJ0380, Section 1.3.4).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100BEANA#40, R5F100CEANA#40 provides scalable code/data capacity within identical thermal and layout constraints, while R5F101BEANA#40 removes data flash overhead for cost-sensitive fixed-function implementations - enabling tiered product variants without PCB redesign.

Availability

R5F100BEANA#40 is available at Aetrix Electronics and suitable for smart energy metering, industrial sensor nodes, home appliance control, and building automation panels requiring stable component supply across multi-year production cycles.

Supply support for R5F100BEANA#40 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 family is designed for ultra-low-power general-purpose embedded control - balancing performance, integration, and energy efficiency in cost-sensitive industrial and consumer applications.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating for the R5F100BEANA#40?

The R5F100BEANA#40 achieves a maximum operating frequency of 32 MHz using the high-speed on-chip oscillator, delivering 41 DMIPS of processing performance. This benchmark reflects integer execution throughput under standard EEMBC CoreMark methodology and enables deterministic real-time response in motor control and sensor fusion applications.

Does the R5F100BEANA#40 include an integrated real-time clock (RTC) with calendar functionality?

Yes, the R5F100BEANA#40 integrates a full-featured RTC with 99-year calendar support, alarm interrupt, and automatic clock correction. It operates independently in STOP mode using the 32.768 kHz subsystem clock, maintaining accurate timekeeping while consuming only 0.57 μA - eliminating the need for external RTC ICs in time-critical applications.

What serial communication interfaces are supported by the R5F100BEANA#40, and how are they mapped to pins?

The R5F100BEANA#40 supports CSI (SPI-compatible), UART/LIN, and I²C/Simplified I²C across shared pin groups - for example, P10–P13 multiplex CSI0/SCL0/SDA0/RxD0/TxD0. Interface selection is configured via peripheral enable registers and pin function control bits, allowing dynamic reassignment without hardware changes.

How much data flash memory does the R5F100BEANA#40 provide, and what is its endurance specification?

The R5F100BEANA#40 includes 4 KB of on-chip data flash memory rated for 1,000,000 write/erase cycles at VDD = 1.8–5.5 V. It supports background operation (BGO), enabling program execution from main flash while rewriting data flash - critical for reliable firmware parameter storage and event logging.

Is the R5F100BEANA#40 pin-compatible with other RL78/G13 40-pin variants such as R5F100CEANA#40?

Yes, the R5F100BEANA#40 is fully pin-compatible with all RL78/G13 40-pin HWQFN variants including R5F100CEANA#40 and R5F101BEANA#40. Identical pin count, mechanical footprint (PWQN0040KC-A), and I/O mapping allow direct substitution - though firmware must validate memory size and data flash presence before initialization.