Renesas R5F100MKAFA#V0

Overview

R5F100MKAFA#V0 from Renesas is an RL78/G13 8-bit MCU with 384 KB flash, 8 KB data flash, and 24 KB RAM, operating at up to 32 MHz (41 DMIPS), featuring ultra-low power consumption (66 μA/MHz active, 0.57 μA RTC+LVD mode), 52-pin LQFP package, and integrated peripherals including 10-bit ADC (26 channels), RTC, UART, I²C, SPI, and 16-bit timers - deployed in battery-powered industrial sensors and smart metering systems.

For engineers reviewing the R5F100MKAFA#V0 datasheet, R5F100MKAFA#V0 pinout, R5F100MKAFA#V0 application, or R5F100MKAFA#V0 equivalent, key selection criteria include its 384 KB code flash with self-programming and boot swap, 52-pin LQFP-0.65mm footprint, -40°C to +85°C industrial temperature grade (A/D suffix), and support for SNOOZE mode DMA-triggered background data flash rewriting.

Technical Context

The R5F100MKAFA#V0 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting variable instruction execution time (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), hardware multiplier/divider, and BGO-capable data flash enabling concurrent program execution during rewrites.

Its peripheral set includes up to 26-channel 10-bit ADC with internal 1.45 V reference and temperature sensor, 3× I²C/Simplified I²C interfaces, 2× UART/LIN channels, 2× CSI (SPI-compatible) channels, 16× 16-bit timers, and real-time clock with calendar, alarm, and clock correction - all managed via dedicated low-power modes (HALT, STOP, SNOOZE).

Key Specifications

Pinout & Package

Package: 52-pin LQFP (10 × 10 mm, 0.65-mm pitch), RoHS-compliant, JEDEC-standard footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100LKAFA#V0, the R5F100MKAFA#V0 delivers 6× more code flash and 2× more data flash for field-upgradable firmware and extended data logging; versus R5F101MKAFA#V0, it adds critical nonvolatile parameter storage without external components or wear-leveling firmware.

Availability

R5F100MKAFA#V0 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, and home appliance control requiring stable component supply, long-term lifecycle assurance, and industrial-grade temperature performance.

Supply support for R5F100MKAFA#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 specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/G13 family is engineered 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 performance of the R5F100MKAFA#V0?

The R5F100MKAFA#V0 operates at up to 32 MHz with a measured performance of 41 DMIPS. Its high-accuracy on-chip oscillator maintains ±1.0% stability across -20°C to +85°C and 1.8–5.5 V supply, eliminating need for external crystal in many timing-critical applications. This frequency enables real-time control loops and fast ADC sampling without external clock sources.

Does the R5F100MKAFA#V0 support in-system programming and firmware updates?

Yes, the R5F100MKAFA#V0 supports full in-system programming via its on-chip debug interface and self-programming capability. It includes boot swap functionality and flash shield window protection, allowing secure field firmware updates without external programmers. The flash library reserves specific RAM regions (e.g., FAF00H for R5F100xJ variants) to manage rewrite operations safely.

How does the R5F100MKAFA#V0 handle low-power operation in battery-backed applications?

The R5F100MKAFA#V0 achieves 0.57 μA in STOP mode with RTC and LVD active - sufficient for decade-long battery backup in smart meters. It supports three low-power states: HALT (CPU stopped, peripherals active), STOP (all clocks halted except RTC/LVD), and SNOOZE (peripheral-triggered wake with minimal latency). These modes are configurable via dedicated system control registers.

What analog capabilities does the R5F100MKAFA#V0 provide for sensor interfacing?

The R5F100MKAFA#V0 integrates a 10-bit ADC with up to 26 input channels, internal 1.45 V reference voltage, and an on-die temperature sensor. It supports single-ended and differential conversions, scan mode with automatic channel sequencing, and hardware trigger sources (e.g., timer overflow, external pin). The ADC operates across the full 1.6–5.5 V supply range without external references.

Is the R5F100MKAFA#V0 pin-compatible with other RL78/G13 devices in the same package?

Yes, all RL78/G13 devices in the 52-pin LQFP-0.65mm package (e.g., R5F100Jx, R5F100Lx, R5F100Mx) share identical pinouts and electrical characteristics. This enables scalable design reuse: developers can migrate between 48 KB and 512 KB flash variants without PCB changes, provided peripheral usage aligns with target device's functional subset.