Renesas R5F101JHAFA#30

Overview

R5F101JHAFA#30 from Renesas is a 52-pin LQFP-0.65mm microcontroller in the RL78/G13 family, featuring 128 KB flash memory, 12 KB RAM, and no data flash. It operates from 1.6 V to 5.5 V, delivers 41 DMIPS at 32 MHz, and supports ultra-low-power modes (66 μA/MHz active, 0.57 μA RTC+LVD). It targets battery-powered industrial sensors and smart metering interfaces.

For engineers reviewing the R5F101JHAFA#30 datasheet, R5F101JHAFA#30 pinout, R5F101JHAFA#30 application, or R5F101JHAFA#30 equivalent, key selection criteria include its 52-pin LQFP package, absence of on-chip data flash, -40°C to +85°C industrial temperature grade (D), and integrated 10-bit 26-channel ADC with internal temperature sensor.

Technical Context

The R5F101JHAFA#30 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, supporting instruction execution times from 0.03125 μs (32 MHz) to 30.5 μs (32.768 kHz). It integrates a 12-bit interval timer, real-time clock with calendar/alarm, and watchdog timer driven by a dedicated low-speed oscillator.

Peripheral integration includes up to 26-channel 10-bit A/D converter with internal 1.45 V reference and temperature sensor, 8–16 channels of 16-bit timer, 2–4 channel DMA controller, and serial interfaces: CSI (SPI-compatible), UART/LIN (2–4 channels), and I²C (3–10 channels).

Key Specifications

Pinout & Package

Package: 52-pin LQFP, 10 mm × 10 mm, 0.65 mm pitch, exposed pad (PLQP0052JA-A).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100JHAFA#30 and R5F101JHAFA#50, the R5F101JHAFA#30 provides optimal cost/performance balance for fixed-function industrial controllers where data flash is unnecessary and tray packaging aligns with low-volume production.

Availability

R5F101JHAFA#30 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, home appliance control, and building automation requiring stable component supply across extended product lifecycles.

Supply support for R5F101JHAFA#30 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 product line delivers true low-power performance for general-purpose embedded applications, targeting cost-sensitive industrial controls and battery-operated devices requiring long-term reliability and toolchain maturity.

FAQ

What is the maximum operating frequency and corresponding performance of the R5F101JHAFA#30?

The R5F101JHAFA#30 operates at up to 32 MHz, delivering 41 DMIPS of processing performance. This speed is achieved using the high-speed on-chip oscillator, which maintains +/-1.0% accuracy across 1.8–5.5 V supply and -20 to +85°C ambient conditions. The RL78 core's 3-stage pipeline ensures deterministic timing for real-time control loops in the R5F101JHAFA#30.

Does the R5F101JHAFA#30 include on-chip data flash memory?

No, the R5F101JHAFA#30 does not include on-chip data flash memory. Per Renesas' part numbering convention, the "101" prefix indicates no data flash, distinguishing it from "100" variants like R5F100JHAFA#30 which integrate 8 KB of data flash. The R5F101JHAFA#30 relies on code flash for firmware and external storage or RAM-based emulation for configuration data.

What package type and pin count does the R5F101JHAFA#30 use?

The R5F101JHAFA#30 uses a 52-pin LQFP package with 10 mm × 10 mm body size and 0.65 mm lead pitch (RENESAS code PLQP0052JA-A). This package supports standard reflow soldering and is compatible with common industrial PCB assembly processes. The "FA" suffix in the part number explicitly denotes the LQFP-0.65mm variant per Renesas' packaging nomenclature.

What is the operating temperature range certified for the R5F101JHAFA#30?

The R5F101JHAFA#30 is rated for industrial operation from -40°C to +85°C (D-grade). This rating is confirmed by Renesas' datasheet Section 1.1 and ordering information tables, where the "D" in the part number position indicates the -40°C to +85°C industrial temperature range. It is not qualified for the extended -40°C to +105°C (G-grade) range.

Which serial communication protocols are supported by the R5F101JHAFA#30?

The R5F101JHAFA#30 supports CSI (SPI-compatible), UART/LIN, and I²C protocols. Specifically, it offers up to 2–8 CSI channels, 2–4 UART/LIN channels, and 3–10 I²C channels - all implemented in shared hardware blocks with flexible pin mapping. These interfaces enable connectivity to displays, sensors, transceivers, and industrial buses without external protocol translators in the R5F101JHAFA#30.