Renesas R5F101PJAFA#V0

Overview

R5F101PJAFA#V0 from Renesas is a 100-pin LQFP-0.65mm ultra-low-power 16-bit RL78/G13 microcontroller with 64 KB flash memory, 4 KB data flash, 4 KB RAM, and operation from 1.6 V to 5.5 V. It delivers 41 DMIPS at 32 MHz, supports RTC + LVD in 0.57 μA STOP mode, and targets battery-powered industrial sensors and smart metering interfaces.

For engineers reviewing the R5F101PJAFA#V0 datasheet, R5F101PJAFA#V0 pinout, R5F101PJAFA#V0 application, or R5F101PJAFA#V0 equivalent, key selection criteria include its 100-pin LQFP package, absence of on-chip data flash (R5F101x series), 16-bit RL78 CPU core with 3-stage pipeline, and support for UART/LIN, I²C, and 10-bit ADC across 26 channels.

Technical Context

The R5F101PJAFA#V0 implements the RL78 CPU core with CISC architecture, 1 MB address space, and configurable instruction timing (0.03125 μs @ 32 MHz to 30.5 μs @ 32.768 kHz). It integrates a 10-bit A/D converter with 26 input channels, internal temperature sensor, and 1.45 V reference voltage.

It features dual clock domains: high-speed on-chip oscillator (selectable 1–32 MHz, ±1.0% accuracy) and subsystem clock (32.768 kHz), enabling precise real-time clock operation with calendar, alarm, and correction functions - all while maintaining 0.57 μA standby current with RTC and LVD active.

Key Specifications

Pinout & Package

Package: 100-pin LQFP (14 × 20 mm, 0.65 mm pitch), RoHS-compliant, tray packaging (#V0).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100PJAFA#V0, the R5F101PJAFA#V0 trades data flash capability for lower cost and simplified flash management, while R5F101PLAFA#V0 offers a memory-down variant within the same low-power RL78/G13 family - both retain identical peripheral sets and ultra-low-power modes.

Availability

R5F101PJAFA#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 support, and RoHS-compliant manufacturing.

Supply support for R5F101PJAFA#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, and power solutions for automotive, industrial, and IoT markets.

The RL78/G13 product line delivers true low-power 16-bit MCUs targeting cost-sensitive, battery-operated, and energy-efficient embedded systems - emphasizing ultra-low standby current, integrated analog peripherals, and robust development tooling.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F101PJAFA#V0?

The R5F101PJAFA#V0 operates up to 32 MHz and delivers 41 DMIPS (Dhrystone MIPS) at that speed. Its RL78 CPU core uses a 3-stage pipeline and supports configurable instruction timing - from 0.03125 μs per instruction at full speed down to 30.5 μs at 32.768 kHz - enabling precise trade-offs between performance and power in the R5F101PJAFA#V0 design.

Does the R5F101PJAFA#V0 include on-chip data flash memory?

No, the R5F101PJAFA#V0 does not include on-chip data flash memory. As indicated by the '101' in its part number (per Renesas documentation), it belongs to the R5F101x series, which omits data flash. In contrast, the R5F100x series includes 4–8 KB of data flash. Firmware updates and parameter storage for the R5F101PJAFA#V0 must use code flash or external memory.

What package type and pin count does the R5F101PJAFA#V0 use?

The R5F101PJAFA#V0 uses a 100-pin LQFP package with 0.65 mm pitch and dimensions of 14 × 20 mm. The '#V0' suffix confirms tray packaging. This package is mechanically and electrically compatible with other RL78/G13 100-pin variants such as R5F100PJAFA#V0 and R5F101PLAFA#V0, enabling layout reuse across memory variants.

What low-power modes are supported by the R5F101PJAFA#V0, and what is the lowest achievable current?

The R5F101PJAFA#V0 supports HALT, STOP, and SNOOZE modes. In STOP mode with only RTC and LVD active, it achieves 0.57 μA typical current consumption. HALT mode draws 66 μA per MHz of active core frequency. These modes are controlled via software and supported by dedicated on-chip power management circuits - critical for extending battery life in the R5F101PJAFA#V0's target applications.

Which analog peripherals are integrated into the R5F101PJAFA#V0?

The R5F101PJAFA#V0 integrates a 10-bit successive approximation register (SAR) ADC with up to 26 analog input channels, an internal temperature sensor, and a 1.45 V internal reference voltage. It supports differential and single-ended measurements, and the AVREFP/AVREFM pins allow external reference configuration. No DAC or analog comparators are included in this variant.