Renesas R5F140LLGFB#30

Overview

R5F140LLGFB#30 from Renesas is a 64-pin LFQFP, 512 KB code flash, 32 KB RAM, industrial-grade RL78/G13A microcontroller operating from 1.6–5.5 V with ultra-low 47 µA/MHz active current and guaranteed operation up to +105°C. It integrates 12-channel 8/10-bit ADC, 8× 16-bit timers, RTC, LIN-capable UART, I²C, CSI, DMA, and on-chip debug for embedded control in motor drives and industrial HMI.

For engineers reviewing the R5F140LLGFB#30 datasheet, R5F140LLGFB#30 pinout, R5F140LLGFB#30 application, or R5F140LLGFB#30 equivalent, this page delivers verified technical context, package-validated pin functions, real-world use cases, and actionable alternative selection guidance for production design-in.

Technical Context

The R5F140LLGFB#30 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 µs (32 MHz on-chip oscillator) to 30.5 µs (32.768 kHz subsystem clock). Its memory map spans 1 MB address space with banked 8-bit general-purpose registers.

It features dual power domains (VDD/EVDD0, VSS/EVSS0), enabling noise-sensitive analog/digital partitioning, and includes hardware multiplier/divider, BGO-capable 8 KB data flash (1M rewrite cycles), and peripheral I/O redirection via PIOR register for flexible pin assignment.

Key Specifications

Pinout & Package

64-pin LFQFP (10 × 10 mm, 0.5-mm pitch), RoHS-compliant, moisture sensitivity level (MSL) 3 per JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F140LLGFB#30, R5F140LKGFB#30 trades 8 KB RAM for lower cost in thermally stable designs, while R5F140LLAFB#30 removes industrial temperature qualification - both require validation of RAM headroom and thermal derating before substitution.

Availability

R5F140LLGFB#30 is available at Aetrix Electronics and suitable for industrial motor control, smart appliance development, and factory automation sensor nodes requiring stable component supply and long-term lifecycle assurance.

Supply support for R5F140LLGFB#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/G13A product line targets cost-sensitive, ultra-low-power embedded control applications requiring industrial temperature range, integrated analog peripherals, and robust firmware security - optimized for appliance, motor, and sensor edge devices.

FAQ

What is the maximum operating frequency and corresponding supply voltage range for R5F140LLGFB#30?

The R5F140LLGFB#30 supports up to 32 MHz using its high-speed on-chip oscillator at VDD = 2.7–5.5 V. When using the external crystal (X1/X2), max frequency is 20 MHz at VDD = 2.7–5.5 V or 16 MHz at VDD = 2.4–5.5 V. The device remains functional down to 1.6 V, though maximum frequency scales with voltage per the datasheet's operating mode table.

Does R5F140LLGFB#30 support LIN bus communication, and which UART channel provides it?

Yes, R5F140LLGFB#30 supports LIN bus communication via UART2 (channels RxD2/P14 and TxD2/P13), which includes built-in LINSEL functionality for automatic sync-break detection and baud rate adjustment. This capability is confirmed in the RL78/G13A datasheet Section 1.1 Features and Section 1.6 Outline of Functions.

How many analog input channels does R5F140LLGFB#30 have, and what is their resolution?

R5F140LLGFB#30 provides 12 analog input channels (ANI0–ANI7, ANI16–ANI20) with selectable 8-bit or 10-bit resolution. The A/D converter operates across the full VDD range (1.6–5.5 V) and includes an internal 1.45 V reference voltage and integrated temperature sensor - all confirmed in the RL78/G13A datasheet Section 1.1 Features and Table 1-1.

What is the purpose of the EVDD0 and EVSS0 pins on R5F140LLGFB#30, and how should they be connected?

EVDD0 and EVSS0 supply power and ground specifically to port I/O circuits, isolating digital switching noise from the core VDD/VSS domain. Per datasheet Cautions (Section 1.3.3), EVSS0 must be at the same potential as VSS, and EVDD0 must be ≤ VDD. For noise-sensitive applications, separate PCB power planes and ground traces are recommended - confirmed in RL78/G13A datasheet Rev.1.10 page 7.

Can R5F140LLGFB#30 perform background data flash rewriting while executing code from program memory?

Yes, R5F140LLGFB#30 supports Background Operation (BGO) for data flash memory: instructions can execute from code flash while simultaneously rewriting the 8 KB data flash. This is explicitly stated in the datasheet Section 1.1 Features and enables seamless firmware parameter updates without halting application logic.