Renesas R5F101MKAFB#V0

Overview

R5F101MKAFB#V0 from Renesas is an RL78/G13 80-pin, 384 KB flash, 8 KB data flash, 20 KB RAM ultra-low-power 16-bit MCU operating from 1.6 V to 5.5 V, delivering 41 DMIPS at 32 MHz with 66 μA/MHz active current and 0.57 μA RTC+LVD standby mode - deployed in industrial motor control interfaces and smart sensor nodes requiring long battery life and robust timing.

For engineers reviewing the R5F101MKAFB#V0 datasheet, R5F101MKAFB#V0 pinout, R5F101MKAFB#V0 application, or R5F101MKAFB#V0 equivalent, key selection criteria include its LFQFP-80 (0.5 mm pitch) package, absence of on-chip data flash (R5F101x series), -40°C to +85°C industrial temperature grade (D suffix), and integrated 16-bit timers, UART/LIN, I²C, and 12-bit ADC with up to 26 channels.

Technical Context

The R5F101MKAFB#V0 implements the RL78 CPU core with a 3-stage CISC pipeline, supporting instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz ultra-low-speed mode), and features a 1 MB address space with four banks of 8×8-bit general-purpose registers. It integrates a high-accuracy ±1.0% on-chip oscillator (32 MHz selectable) and supports HALT, STOP, and SNOOZE low-power modes.

Its peripheral set includes eight 16-bit timers, one 12-bit interval timer, one real-time clock with calendar/alarm/correction, one watchdog timer, a 10-bit A/D converter with internal 1.45 V reference and temperature sensor, and serial interfaces: up to 8 CSI channels, 4 UART/LIN channels, and 10 I²C/Simplified I²C channels - all configurable for mixed-signal embedded control tasks.

Key Specifications

Pinout & Package

Package: 80-pin LFQFP (12 × 12 mm, 0.50-mm pitch), RoHS-compliant, industrial-grade (–40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100MKAFB#V0, the R5F101MKAFB#V0 trades data flash for lower cost and identical core/peripheral functionality - ideal for fixed-parameter systems; versus RL78/G14, it offers proven reliability and smaller footprint at the expense of memory headroom and advanced analog features.

Availability

R5F101MKAFB#V0 is available at Aetrix Electronics and suitable for industrial motor control interfaces, smart HVAC sensor nodes, PLC I/O modules, and medical infusion pump controllers requiring stable component supply across extended production lifecycles.

Supply support for R5F101MKAFB#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 industrial, automotive, and IoT markets.

The RL78/G13 product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive, battery-operated, and industrial embedded applications demanding high reliability and long-term supply stability.

FAQ

What is the maximum operating frequency and power consumption of the R5F101MKAFB#V0?

The R5F101MKAFB#V0 operates at up to 32 MHz with 41 DMIPS performance and consumes 66 μA per MHz in active mode. In STOP mode with RTC and LVD enabled, it draws just 0.57 μA - making it ideal for energy-constrained applications like wireless sensors and portable medical devices where the R5F101MKAFB#V0's efficiency directly extends battery service life.

Does the R5F101MKAFB#V0 include on-chip data flash memory?

No, the R5F101MKAFB#V0 does not include on-chip data flash memory. As indicated by the "101" prefix in its part number (per Renesas RL78/G13 documentation), this variant omits data flash - unlike the R5F100x series which provides 4–8 KB. Applications requiring runtime parameter storage must use external EEPROM or utilize code flash sectors with wear-leveling firmware, as the R5F101MKAFB#V0 retains full self-programming capability for code flash.

What package type and pin count does the R5F101MKAFB#V0 use?

The R5F101MKAFB#V0 uses an 80-pin LFQFP package with 0.50-mm pitch (Renesas package code FB), measuring 12 × 12 mm. This package is RoHS-compliant and rated for industrial temperature range (–40°C to +85°C). The "#V0" suffix confirms tray packaging - verified in Renesas datasheet R01DS0131EJ0380 Table 1-1 - ensuring compatibility with standard SMT assembly lines handling the R5F101MKAFB#V0.

Which serial communication interfaces are supported by the R5F101MKAFB#V0?

The R5F101MKAFB#V0 supports up to 8 CSI (Simplified SPI) channels, 4 UART/LIN channels (with LIN 2.1/2.2 compliance including break detection), and 10 I²C/Simplified I²C channels. These interfaces operate concurrently and are mapped to flexible GPIO pins - enabling simultaneous connectivity to displays, sensors, motor drivers, and diagnostics buses without external bridge ICs, a key advantage in compact embedded systems using the R5F101MKAFB#V0.

How does the R5F101MKAFB#V0 handle analog-to-digital conversion?

The R5F101MKAFB#V0 integrates a 10-bit successive-approximation ADC with up to 26 input channels, internal 1.45 V reference voltage, and an on-chip temperature sensor. It supports single- and continuous-conversion modes with programmable sample-and-hold timing - allowing accurate acquisition of thermistors, pressure transducers, and battery voltage monitors. Since the R5F101MKAFB#V0 lacks data flash, ADC calibration coefficients are typically stored in reserved code flash sectors managed via the flash library.