Renesas R5F100MFAFA#V0

Overview

R5F100MFAFA#V0 from Renesas is an RL78/G13 80-pin LQFP MCU with 96 KB flash, 8 KB data flash, 8 KB RAM, 16-bit A/D converter (10-bit resolution, 26 channels), and real-time clock - designed for low-power industrial control systems operating from 1.6 V to 5.5 V across –40°C to +85°C.

For engineers reviewing the R5F100MFAFA#V0 datasheet, R5F100MFAFA#V0 pinout, R5F100MFAFA#V0 application, or R5F100MFAFA#V0 equivalent, key selection criteria include ultra-low power consumption (66 μA/MHz active, 0.57 μA RTC+LVD mode), integrated BGO data flash rewriting, and support for LIN-bus UART, CSI, and I²C interfaces in a 14 × 14 mm 0.65-mm-pitch package.

Technical Context

The R5F100MFAFA#V0 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, enabling instruction execution times from 0.03125 μs (@32 MHz) to 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 multiply-accumulate unit supporting 16×16→32-bit operations.

Power management includes HALT, STOP, and SNOOZE modes; reset functions comprise on-chip POR and 14-level LVD with interrupt/reset selection; timing peripherals include eight 16-bit timers, one 12-bit interval timer, one calendar RTC with alarm/correction, and one watchdog timer.

Key Specifications

Pinout & Package

80-pin plastic LQFP (14 × 14 mm, 0.65-mm pitch), JEDEC standard footprint, RoHS-compliant, tray-packaged (#V0).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100MFAFA#V0, R5F100MGAFA#V0 offers higher memory headroom for feature-rich firmware, while R5F101MFAFA#V0 reduces BOM cost by omitting integrated data flash - both retain identical I/O, peripherals, and low-power behavior.

Availability

R5F100MFAFA#V0 is available at Aetrix Electronics and suitable for industrial motor control, smart energy metering, building automation sensor nodes, and white goods user interface applications requiring stable component supply and long-term manufacturability.

Supply support for R5F100MFAFA#V0 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 delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/G13 product line delivers true low-power performance for general-purpose embedded applications - optimized for cost-sensitive, battery-operated, and industrial control systems requiring high integration and long-term reliability.

FAQ

What is the maximum operating frequency and corresponding current consumption of the R5F100MFAFA#V0?

The R5F100MFAFA#V0 operates up to 32 MHz using its high-accuracy on-chip oscillator. At this frequency, active current consumption is 66 μA per MHz - resulting in approximately 2.1 mA total at 32 MHz with typical peripheral activity. In STOP mode with only RTC and LVD enabled, it draws just 0.57 μA, making it ideal for intermittent-sensing applications.

Does the R5F100MFAFA#V0 support LIN bus communication?

Yes, the R5F100MFAFA#V0 supports LIN bus communication through its UART peripherals. Specifically, UART0 and UART1 (configurable across multiple pins) include LIN-break detection, sync byte handling, and checksum calculation - fully compliant with LIN 2.2A specifications. This enables direct integration into automotive body electronics and industrial sub-networks.

How many analog input channels does the R5F100MFAFA#V0 provide, and what is their resolution?

The R5F100MFAFA#V0 provides 26 analog input channels with 10-bit resolution. These channels are accessible via dedicated ANIxx pins (e.g., P20/ANI0, P21/ANI1, P147/ANI18), and the ADC supports internal references (1.45 V) and temperature sensor input. The 10-bit precision supports accurate current sensing, voltage monitoring, and environmental measurements in industrial settings.

What packaging and ordering options are available for the R5F100MFAFA#V0?

The R5F100MFAFA#V0 is supplied in an 80-pin LQFP package (14 × 14 mm, 0.65 mm pitch) with tray packaging indicated by the #V0 suffix. It is not offered in tape-and-reel (#X0) or QFN variants. This configuration ensures compatibility with standard surface-mount assembly processes and industrial-grade thermal performance.

Can the R5F100MFAFA#V0 perform flash self-programming while executing code from flash memory?

Yes, the R5F100MFAFA#V0 supports flash self-programming with boot swap functionality. Code can be executed from one flash bank while rewriting another - enabling safe firmware updates without halting application logic. The flash library reserves specific RAM regions (e.g., FAF00H for R5F100xJ variants) to manage this process reliably.