Renesas R5F100GHGNA#20

Overview

R5F100GHGNA#20 from Renesas is a 48-pin LFQFP-packaged 16-bit RL78/G13 microcontroller with 128 KB flash, 8 KB data flash, and 12 KB RAM, operating from 1.6 V to 5.5 V at up to 32 MHz (41 DMIPS), featuring ultra-low-power modes (0.57 μA RTC+LVD), 10-bit 26-channel ADC, and real-time clock with calendar function - deployed in battery-powered industrial sensors and smart metering endpoints.

For engineers reviewing the R5F100GHGNA#20 datasheet, R5F100GHGNA#20 pinout, R5F100GHGNA#20 application, or R5F100GHGNA#20 equivalent, key selection criteria include its industrial-grade temperature range (−40°C to +105°C), integrated data flash with 1M rewrite cycles, hardware multiplier/divider, and dual SPI/I²C/UART interfaces for sensor fusion and secure firmware updates.

Technical Context

The R5F100GHGNA#20 implements the RL78 CPU core with 3-stage pipeline CISC architecture, supporting instruction execution times from 0.03125 μs (32 MHz high-speed mode) to 30.5 μs (32.768 kHz subsystem clock), and features on-chip debug, self-programming with boot swap, and background operation during data flash rewriting.

It integrates a 12-bit interval timer, 16-bit timers (12 channels), watchdog timer with dedicated low-speed oscillator, and power management including HALT/STOP/SNOOZE modes, POR, and 14-level LVD with interrupt/reset selection - enabling deterministic low-power scheduling in resource-constrained embedded systems.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F100GHGNA#20, R5F100GHGFB#V0 offers identical functionality in a more serviceable package for prototyping and low-volume production, while R5F101GHGNA#20 removes data flash to lower unit cost - making it viable only when persistent non-volatile data storage is implemented elsewhere.

Availability

R5F100GHGNA#20 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, home appliance control, and building automation systems requiring stable component supply across extended product lifecycles.

Supply support for R5F100GHGNA#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 family delivers ultra-low-power 16-bit MCUs optimized for cost-sensitive, battery-operated industrial and consumer devices requiring long-term reliability and integrated analog/mixed-signal capability.

FAQ

What is the maximum operating frequency and performance of the R5F100GHGNA#20?

The R5F100GHGNA#20 operates at up to 32 MHz with 41 DMIPS performance, enabled by its RL78 CPU core's 3-stage pipeline and high-speed on-chip oscillator (±1.0% accuracy over −40°C to +85°C). Its minimum instruction execution time is 0.03125 μs in high-speed mode, supporting real-time control tasks in industrial and metering applications where deterministic timing is critical. The R5F100GHGNA#20 maintains this performance across its full 1.6–5.5 V supply range.

Does the R5F100GHGNA#20 support in-system programming and secure firmware updates?

Yes, the R5F100GHGNA#20 supports full in-system programming via on-chip debug interface and includes self-programming capabilities with boot swap and flash shield window functions. These features allow secure firmware updates in the field without external programmers. The R5F100GHGNA#20 also supports block-wise erase/write prohibition to prevent unauthorized modification of protected code sections - essential for certified metering and industrial control deployments.

What analog peripherals are integrated into the R5F100GHGNA#20?

The R5F100GHGNA#20 integrates a 10-bit successive-approximation ADC with up to 26 input channels, internal 1.45 V reference voltage, and an on-chip temperature sensor usable in HS (high-speed main) mode. It also includes a 12-bit interval timer and real-time clock with calendar function (99-year range), alarm, and clock correction - eliminating the need for external analog components in sensor interface and time-stamping applications. The R5F100GHGNA#20 supports simultaneous sampling and background conversion during CPU execution.

How does the R5F100GHGNA#20 achieve ultra-low power consumption?

The R5F100GHGNA#20 achieves ultra-low power via multiple hardware-optimized modes: HALT (1.2 μA typical), STOP (0.57 μA with RTC + LVD active), and SNOOZE (low-latency wake-up from peripheral events). Its 66 μA/MHz active current, combined with a 32.768 kHz subsystem clock and dedicated low-speed watchdog oscillator, enables multi-year battery operation in always-on sensing applications. The R5F100GHGNA#20 maintains full register retention and RTC functionality in STOP mode without external components.

What communication interfaces does the R5F100GHGNA#20 provide for sensor and network connectivity?

The R5F100GHGNA#20 provides up to 8 CSI (SPI-compatible) channels, 4 UART/LIN interfaces (with LIN bus support), and 10 I²C/Simplified I²C channels - enabling concurrent connection to diverse sensors (e.g., MEMS, environmental), displays, and industrial networks (Modbus RTU, HART). All serial interfaces support independent clock sources and DMA-assisted transfers, reducing CPU load. The R5F100GHGNA#20's multi-protocol flexibility simplifies integration in heterogeneous embedded systems without external bridge ICs.