Renesas R5F100GCGNA#20

Overview

R5F100GCGNA#20 from Renesas is a 48-pin HWQFN-packaged 16-bit RL78/G13 microcontroller with 128 KB flash, 8 KB data flash, and 12 KB RAM, operating from 1.6–5.5 V at up to 32 MHz (41 DMIPS), featuring ultra-low-power modes (0.57 μA RTC+LVD), integrated 10-bit ADC (26 channels), RTC, and multiple serial interfaces - deployed in battery-powered industrial sensors and smart metering endpoints.

For engineers reviewing the R5F100GCGNA#20 datasheet, R5F100GCGNA#20 pinout, R5F100GCGNA#20 application, or R5F100GCGNA#20 equivalent, key selection criteria include its 48-pin HWQFN-0.5mm package, industrial-grade −40°C to +105°C operation (G-grade), on-chip data flash rewrite endurance (1M cycles), and support for background operation during flash programming.

Technical Context

The R5F100GCGNA#20 implements the RL78 CPU core with CISC architecture and 3-stage pipeline, enabling instruction execution times from 0.03125 μs (32 MHz) to 30.5 μs (32.768 kHz). It integrates a high-accuracy ±1.0% on-chip oscillator across 1–32 MHz and supports HALT/STOP/SNOOZE low-power states.

Its peripheral set includes eight 16-bit timers, one 12-bit interval timer, one calendar RTC with alarm/correction, one watchdog timer, two to four UART/LIN channels, three to ten I²C/Simplified I²C channels, and two to eight CSI (SPI-compatible) channels - all configurable via dedicated SFRs and DMA channels (2/4).

Key Specifications

Pinout & Package

Package: 48-pin HWQFN (7 × 7 mm, 0.5-mm pitch), moisture sensitivity level (MSL) 3, RoHS-compliant, lead-free.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100GAGNA#20, the R5F100GCGNA#20 provides 32 KB more flash and 4 KB more RAM for complex firmware and extended data buffering; versus R5F100GLAFA#V0, it trades 16 pins and LQFP assembly for smaller footprint and thermal performance in space-constrained industrial modules.

Availability

R5F100GCGNA#20 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart metering endpoints, and home energy monitors requiring stable component supply, long-term lifecycle support, and guaranteed G-grade temperature compliance.

Supply support for R5F100GCGNA#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 specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The RL78/G13 product line delivers true low-power 16-bit MCUs optimized for cost-sensitive, battery-operated, and thermally demanding industrial applications - balancing performance, integration, and energy efficiency.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating of the R5F100GCGNA#20?

The R5F100GCGNA#20 operates at up to 32 MHz with a measured performance of 41 DMIPS. This is achieved using the high-speed on-chip oscillator, which maintains ±1.0% accuracy across 1.8–5.5 V and −20°C to +85°C - and the RL78 core's 3-stage pipeline ensures deterministic timing for real-time control loops. The R5F100GCGNA#20 sustains this performance while drawing only 66 μA per MHz in active mode.

Does the R5F100GCGNA#20 support background data flash rewriting while executing application code?

Yes, the R5F100GCGNA#20 supports Background Operation (BGO) for data flash. Instructions can be fetched and executed from program memory while data flash is being rewritten - critical for uninterrupted logging in industrial monitoring systems. The R5F100GCGNA#20 guarantees 1,000,000 write cycles (typical) and operates across the full 1.8–5.5 V VDD range during rewrites, with RAM usage managed by the flash library starting at address FAF00H.

What are the supported low-power modes and their typical current consumption for the R5F100GCGNA#20?

The R5F100GCGNA#20 offers HALT (66 μA/MHz), STOP (0.57 μA with RTC + LVD active), and SNOOZE modes. In STOP mode, only the 32.768 kHz subsystem clock runs - powering the RTC, LVD, and wake-up logic - enabling decade-scale battery operation in endpoint devices. The R5F100GCGNA#20 achieves this while maintaining full register retention and fast wake-up (< 4 μs from HALT, < 10 μs from STOP).

Which analog features are integrated into the R5F100GCGNA#20, and what are their key specifications?

The R5F100GCGNA#20 integrates a 10-bit successive-approximation ADC with up to 26 analog input channels, selectable internal 1.45 V reference, and an on-die temperature sensor (active only in HS mode). It supports simultaneous sampling on multiple channels and programmable conversion triggers via timers or external events. The R5F100GCGNA#20 ADC operates across the full 1.6–5.5 V VDD range, ensuring consistent resolution in variable-supply applications like battery-powered sensors.

Is the R5F100GCGNA#20 pin-compatible with other RL78/G13 variants in the same package?

The R5F100GCGNA#20 shares identical pinout and electrical characteristics with all other 48-pin HWQFN RL78/G13 devices (e.g., R5F100GAxNA#20, R5F100GGxNA#20), differing only in flash/RAM sizing and data flash presence. Firmware and hardware designs targeting the 48-pin HWQFN footprint are interchangeable across these variants - the R5F100GCGNA#20 is fully compatible at the board level with no layout changes required.