Renesas R5F101FEAFP#V0

Overview

R5F101FEAFP#V0 from Renesas is a 44-pin LQFP-44, 32 MHz RL78/G13 16-bit microcontroller with 64 KB flash memory, 4 KB data flash, 4 KB RAM, and ultra-low-power operation (66 μA/MHz active, 0.57 μA RTC+LVD mode), designed for battery-powered industrial control and sensor interface applications.

For engineers reviewing the R5F101FEAFP#V0 datasheet, R5F101FEAFP#V0 pinout, R5F101FEAFP#V0 application, or R5F101FEAFP#V0 equivalent, key selection criteria include its 1.6–5.5 V supply range, integrated 10-bit ADC (26-channel), real-time clock with calendar, and support for UART/LIN, I²C, and CSI serial interfaces in a compact 10 × 10 mm package.

Technical Context

The R5F101FEAFP#V0 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction timing (0.03125 μs @ 32 MHz to 30.5 μs @ 32.768 kHz). It integrates a high-accuracy ±1.0% on-chip oscillator and supports HALT, STOP, and SNOOZE low-power modes.

It features 8× 16-bit timers, one 12-bit interval timer, one real-time clock with alarm and calendar, one watchdog timer, and a 10-bit A/D converter with internal reference voltage (1.45 V) and temperature sensor - all operating across –40°C to +85°C ambient temperature.

Key Specifications

Pinout & Package

Package: 44-pin LQFP (10 × 10 mm, 0.8-mm pitch), RoHS-compliant, tray packaging (#V0).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit microcontroller applications.

Compared with R5F100FEAFP#V0, the R5F101FEAFP#V0 omits data flash protection logic to reduce cost and die size - ideal for cost-sensitive, non-security-critical applications; versus R5F104FEAFP#V0, it trades memory headroom for lower power and smaller footprint in resource-constrained edge nodes.

Availability

R5F101FEAFP#V0 is available at Aetrix Electronics and suitable for industrial automation, smart home devices, and portable medical equipment requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for R5F101FEAFP#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 targets cost-optimized, ultra-low-power general-purpose embedded control - balancing performance, energy efficiency, and integration for battery-operated and energy-harvesting applications.

FAQ

What is the maximum operating frequency and core performance of the R5F101FEAFP#V0?

The R5F101FEAFP#V0 operates up to 32 MHz and delivers 41 DMIPS using the RL78 16-bit CISC core with 3-stage pipeline. Its minimum instruction execution time is 0.03125 μs at full speed, and it supports dynamic clock scaling down to 32.768 kHz for ultra-low-power RTC operation - making the R5F101FEAFP#V0 suitable for both responsive control loops and extended battery-life applications.

Does the R5F101FEAFP#V0 include data flash memory, and what are its endurance specifications?

Yes, the R5F101FEAFP#V0 includes 4 KB of on-chip data flash memory rated for 1,000,000 write/erase cycles (typical) and supports background operation (BGO), allowing code execution from program memory during rewrites. It operates across the full VDD range of 1.8–5.5 V, enabling robust field updates without power cycling - a key capability for maintaining calibration data or configuration parameters in the R5F101FEAFP#V0.

What low-power modes does the R5F101FEAFP#V0 support, and what is its lowest current consumption?

The R5F101FEAFP#V0 supports HALT, STOP, and SNOOZE modes. In STOP mode with only RTC and LVD active, it consumes just 0.57 μA - enabling multi-year operation on coin-cell batteries. Active-mode current is 66 μA/MHz, and the device maintains full register retention and wake-on-interrupt capability in all low-power states - essential for always-on sensing in the R5F101FEAFP#V0.

Can the R5F101FEAFP#V0 be used for LIN bus communication, and which peripheral supports it?

Yes, the R5F101FEAFP#V0 supports LIN 2.2 protocol via its UART peripheral, which includes dedicated LIN break detection, sync field generation, and checksum calculation. The UART can operate in LIN master or slave mode, and the on-chip ±1.0% oscillator eliminates the need for an external crystal - simplifying design and reducing cost for automotive body electronics and industrial networks built around the R5F101FEAFP#V0.

What is the ADC configuration of the R5F101FEAFP#V0, and does it include internal references?

The R5F101FEAFP#V0 integrates a 10-bit successive-approximation ADC with up to 26 input channels. It includes an internal 1.45 V reference voltage and a calibrated temperature sensor - both accessible via dedicated ANI pins. These features enable accurate, self-contained analog measurements without external references or sensors, directly supporting precision monitoring tasks in the R5F101FEAFP#V0.