Renesas R5F140FKGFP#30

Overview

R5F140FKGFP#30 from Renesas is a 44-pin LQFP ultra-low-power 16-bit RL78/G13A microcontroller with 384 KB code flash, 8 KB data flash, and 24 KB RAM, operating from 1.6–5.5 V at -40 to +105°C for industrial applications. It integrates an RL78 CPU core (3-stage pipeline), 8-channel 16-bit timer, 10-channel 8/10-bit ADC, UART/LIN, I²C, CSI, RTC, and ultra-low-power STOP/HALT/SNOOZE modes-used in motor control and smart appliance main control units.

For engineers reviewing the R5F140FKGFP#30 datasheet, R5F140FKGFP#30 pinout, R5F140FKGFP#30 application, or R5F140FKGFP#30 equivalent, key selection criteria include its 44-pin LQFP-0.8mm package, industrial-grade 105°C ambient rating, 47 µA/MHz typical active current, integrated LIN-capable UART, and on-chip debug support via TOOL0/TOOLRxD/TOOLTxD pins.

Technical Context

The R5F140FKGFP#30 implements the RL78 CPU core with CISC architecture, 1 MB address space, and configurable instruction execution time (0.03125 µs @ 32 MHz high-speed oscillator or 30.5 µs @ 32.768 kHz subsystem clock). It supports dual-clock domains: high-speed main system clock (up to 20 MHz crystal or 32 MHz on-chip oscillator) and independent 32.768 kHz subsystem clock for RTC and low-power operation.

Its peripheral set includes 40 total I/O pins (10 N-ch open-drain with VDD withstand voltage), 8-channel 16-bit timer array with PWM capability, background data flash rewrite (BGO), and hardware multiplier/divider. Power management features POR, LVD (14-level selectable), and three low-power modes optimized for battery-backed or energy-sensitive industrial nodes.

Key Specifications

Pinout & Package

44-pin plastic LQFP (10 × 10 mm, 0.8-mm pitch), RoHS-compliant, tray-packaged (#30 suffix). Pin 1 marked by dot; REGC requires 0.47–1 µF capacitor to VSS.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F140FKGFP#30, R5F140FLGFP#30 provides scalable flash/RAM for complex control algorithms, while R5F140FKAFP#30 trades industrial reliability for lower acquisition cost in thermally benign environments-neither is pin-compatible without validation of thermal and voltage margin constraints.

Availability

R5F140FKGFP#30 is available at Aetrix Electronics and suitable for industrial motor drives, smart appliance main control units, and energy metering systems requiring stable component supply across extended product lifecycles.

Supply support for R5F140FKGFP#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 industrial, automotive, and IoT markets.

The RL78/G13A product line delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive industrial control, home appliances, and metering applications where energy efficiency and integrated peripherals reduce system complexity.

FAQ

What is the maximum operating frequency supported by the R5F140FKGFP#30?

The R5F140FKGFP#30 supports a maximum system clock of 20 MHz using an external crystal (X1/X2) or 32 MHz using the high-speed on-chip oscillator. Its minimum instruction execution time is 0.03125 µs at 32 MHz, enabling responsive real-time control in applications like motor commutation. The R5F140FKGFP#30 maintains full functionality across its 1.6–5.5 V supply range at these frequencies.

Does the R5F140FKGFP#30 support LIN bus communication natively?

Yes, the R5F140FKGFP#30 supports LIN 2.2 protocol natively through UART0, which includes hardware-assisted break detection, sync field generation, and checksum calculation. This eliminates software overhead for LIN frame handling and ensures deterministic timing-critical for automotive body control modules. The R5F140FKGFP#30 requires no external transceiver for basic LIN node implementation.

How many analog input channels does the R5F140FKGFP#30 provide?

The R5F140FKGFP#30 provides 10 analog input channels (ANI0–ANI9) with 8/10-bit resolution, referenced to internal 1.45 V or external AVREFP/AVREFM pins. It includes a calibrated on-die temperature sensor usable without external components. All 10 channels are accessible on the 44-pin LQFP package, with ANI0 and ANI1 doubling as ADC reference inputs.

What debug interface does the R5F140FKGFP#30 use, and how many pins are required?

The R5F140FKGFP#30 uses Renesas' single-wire on-chip debug interface via the TOOL0 pin (P40), with bidirectional TOOLRxD (P11) and TOOLTxD (P12) signals multiplexed on existing UART pins. This eliminates the need for dedicated debug headers or external emulators-only three pins are used, and no additional PCB footprint is required beyond standard UART routing. Debug access is fully functional on the R5F140FKGFP#30 in all power modes except deep STOP.

Is the R5F140FKGFP#30 pin-compatible with other RL78/G13A variants in the same package?

Yes, the R5F140FKGFP#30 is pin-compatible with all other 44-pin LQFP RL78/G13A devices-including R5F140FLGFP#30 (512 KB flash), R5F140FKAFP#30 (consumer temp), and R5F140FLAFP#30-because they share identical pin configuration, electrical characteristics, and peripheral mapping. Firmware and PCB designs can be reused across these variants with only flash/RAM and temperature grade differences.