Renesas R5F117BCGNA#20

Overview

R5F117BCGNA#20 from Renesas is a 32-pin, 32 KB flash, 2 KB data flash, 3 KB RAM RL78/I1D 16-bit microcontroller with ultra-low power consumption (58.3 μA/MHz active, 0.64 μA RTC+LVD stop mode), 24 MHz high-accuracy on-chip oscillator (±1.0%), and integrated analog peripherals including 12-channel 12-bit ADC, 4 operational amplifiers, and 2 comparators - deployed in industrial sensor nodes and battery-powered control modules.

For engineers reviewing the R5F117BCGNA#20 datasheet, R5F117BCGNA#20 pinout, R5F117BCGNA#20 application, or R5F117BCGNA#20 equivalent, key selection criteria include its HVQFN-32 package, -40°C to +105°C industrial temperature grade, dual I²C/CSI interfaces, real-time clock with calendar, and on-chip debug support for firmware development.

Technical Context

The R5F117BCGNA#20 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and 33 DMIPS at 24 MHz, supporting multiply/divide/MAC instructions and 1 MB address space. It integrates a programmable regulator with REGC capacitor interface and dual clock domains: main system clock (up to 24 MHz via high-speed on-chip oscillator or external crystal) and subsystem clock (32.768 kHz XT1).

Its peripheral set includes an Event Link Controller (ELC) enabling hardware-triggered event chaining across 20 event sources, a Data Transfer Controller (DTC) with 20 activation sources and chain transfer, and a 12-bit interval timer plus four 16-bit timers - all optimized for deterministic low-latency response in closed-loop industrial control.

Key Specifications

Pinout & Package

Package: 32-pin HVQFN (5 × 5 mm, 0.5 mm pitch) with exposed die pad recommended to be connected to VSS.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F117BAGNA#20, the R5F117BCGNA#20 delivers double flash capacity and 1 KB more RAM for complex control algorithms and data logging; versus R5F117BCGFP#10, it offers finer pitch, smaller board area, and improved high-frequency noise immunity - critical for dense industrial PCBs.

Availability

R5F117BCGNA#20 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart HVAC controllers, programmable logic relays, and motor drive monitors requiring stable component supply across extended product lifecycles.

Supply support for R5F117BCGNA#20 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 delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/I1D product line targets ultra-low-power industrial control applications, integrating analog front-ends, real-time peripherals, and robust flash memory to simplify design of certified industrial equipment.

FAQ

What is the maximum operating frequency and accuracy of the on-chip oscillator in R5F117BCGNA#20?

The R5F117BCGNA#20 features a high-speed on-chip oscillator rated up to 24 MHz with ±1.0% accuracy over VDD = 1.8–3.6 V and TA = -20°C to +85°C. At 1.6–1.8 V supply or -40°C to -20°C, accuracy degrades to ±5.0% or ±5.5%. This oscillator serves as the default reset clock and supports full 33 DMIPS performance without external crystals.

How many analog input channels and op-amps does R5F117BCGNA#20 support?

The R5F117BCGNA#20 supports 12 analog input channels (ANI2–ANI13) and integrates four fully configurable operational amplifiers (AMP0–AMP3) with differential inputs and rail-to-rail output. Each op-amp can be independently assigned to specific pins (e.g., AMP0+ on P12, AMP0- on P13, AMP0O on P14), enabling multi-sensor signal conditioning within a single HVQFN-32 package.

Does R5F117BCGNA#20 support background data flash rewriting while executing code from main flash?

Yes, the R5F117BCGNA#20 supports Background Operation (BGO) for data flash memory. Instructions can be executed from program memory while rewriting the 2 KB data flash - essential for over-the-air firmware updates and runtime parameter storage without halting application logic. The flash library uses RAM starting at address FF300H for this operation.

What are the power consumption modes supported by R5F117BCGNA#20, and what is the lowest current draw?

The R5F117BCGNA#20 supports HALT (58.3 μA/MHz), STOP (0.64 μA), and SNOOZE modes. In STOP mode with only RTC2 and LVD active, it draws just 0.64 μA - enabling decade-scale battery operation in metering and remote sensing. All modes retain RAM content and support wake-up via INTPx, RTC alarm, or comparator events.

Is R5F117BCGNA#20 pin-compatible with other RL78/I1D variants in the same package?

No, R5F117BCGNA#20 is not guaranteed pin-compatible with other RL78/I1D variants even in the same HVQFN-32 package. While pin count and physical footprint match, peripheral assignments (e.g., KR0/KR1 on P51/P52 in R5F117BCGNA#20) differ across variants. Always verify pin function mapping against the specific variant's datasheet section 1.3.4 and user manual chapter 2.1.