Renesas R5F100BCANA#20

Overview

R5F100BCANA#20 from Renesas is a 32-pin, 16-bit RL78/G13 microcontroller with 16 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. It delivers 41 DMIPS at 32 MHz, integrates an RTC, 10-bit ADC (6 channels), UART/SPI/I²C interfaces, and ultra-low-power modes (0.57 μA in STOP with RTC+LVD), targeting battery-powered industrial sensors and smart metering endpoints.

For engineers reviewing the R5F100BCANA#20 datasheet, R5F100BCANA#20 pinout, R5F100BCANA#20 application, or R5F100BCANA#20 equivalent, key selection criteria include its HWQFN-32 package, integrated data flash with background operation, real-time clock with calendar/alarm, and support for LIN-bus via UART - all critical for cost-sensitive, low-power embedded control designs.

Technical Context

The R5F100BCANA#20 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, enabling configurable instruction timing from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz subsystem clock). Its memory subsystem includes on-chip code flash with block erase security, self-programming with boot swap, and background data flash rewriting (1M write cycles).

Power management features include HALT, STOP, and SNOOZE modes; on-chip POR and 14-level LVD; and DMA controller (2 channels) supporting 2-clock transfers between SFR and RAM. Peripheral integration covers up to 16× 16-bit timers, 12-bit interval timer, watchdog, and simplified SPI/CSI (2–8 channels), UART/LIN (2–4), and I²C (3–10).

Key Specifications

Pinout & Package

Package: 32-pin HWQFN (5 × 5 mm, 0.5-mm pitch), moisture sensitivity level MSL3, lead-free and RoHS compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100BCANA#20, the #10 variant offers identical electrical and functional behavior with different logistics packaging, while R5F101BCANA#20 removes data flash - reducing cost but eliminating background reprogramming capability essential for secure OTA updates and runtime configuration persistence.

Availability

R5F100BCANA#20 is available at Aetrix Electronics and suitable for smart energy meters, industrial sensor nodes, and home appliance controls requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for R5F100BCANA#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 IoT markets.

The RL78/G13 family targets cost-sensitive, ultra-low-power general-purpose embedded applications - emphasizing energy efficiency, integrated peripherals, and rapid development with scalable memory options.

FAQ

What is the maximum operating frequency and performance of the R5F100BCANA#20?

The R5F100BCANA#20 operates at up to 32 MHz, delivering 41 DMIPS of processing performance. This is achieved using the RL78 CPU core's 3-stage pipeline and high-speed on-chip oscillator with ±1.0% accuracy across 1.8–5.5 V and –20°C to +85°C. The R5F100BCANA#20 sustains this speed while maintaining ultra-low power consumption - 66 μA/MHz in active mode - making it ideal for responsive yet energy-conscious applications like portable diagnostics tools.

Does the R5F100BCANA#20 include data flash memory, and what are its endurance specifications?

Yes, the R5F100BCANA#20 integrates 4 KB of on-chip data flash memory rated for 1,000,000 write/erase cycles (typical) at VDD = 1.8–5.5 V. It supports background operation (BGO), allowing program execution from code flash while rewriting data flash - essential for seamless firmware updates and runtime parameter storage. This capability is confirmed in the R01DS0131EJ0380 datasheet and distinguishes the R5F100BCANA#20 from data-flash-less variants like R5F101BCANA#20.

What package type and pin count does the R5F100BCANA#20 use?

The R5F100BCANA#20 uses a 32-pin HWQFN package (5 mm × 5 mm, 0.5 mm pitch), identified by the "NA" suffix in the part number and confirmed in Table 1-1 of the RL78/G13 datasheet. This thermally enhanced, surface-mount package supports automated assembly and offers improved heat dissipation over TSSOP alternatives - critical for sustained operation in enclosed industrial enclosures where ambient temperatures approach +85°C.

Can the R5F100BCANA#20 support LIN bus communication, and how is it implemented?

Yes, the R5F100BCANA#20 supports LIN bus communication through its UART peripheral, which includes LIN-break-detection and sync-byte transmission features per LIN specification v2.2A. Specifically, UART0 and UART1 (depending on pin mapping) can be configured for LIN master or slave operation. This capability is documented in the "Serial Interface" section of the R01DS0131EJ0380 datasheet and enables direct integration into automotive body electronics and industrial sub-networks without external transceivers.

What low-power modes are available on the R5F100BCANA#20, and what is the lowest current draw achievable?

The R5F100BCANA#20 supports HALT, STOP, and SNOOZE modes. In STOP mode with only the real-time clock (RTC) and low-voltage detector (LVD) active, it achieves 0.57 μA typical current consumption at VDD = 3.0 V and TA = 25°C - verified in the "Ultra-low power consumption technology" section of the datasheet. This enables decade-long operation on primary lithium batteries in remote monitoring devices, with wake-up via RTC alarm, external interrupt, or LVD threshold crossing.