Renesas R5F104EEGNA#20

Overview

R5F104EEGNA#20 from Renesas is a 40-pin HWQFN-packaged 16-bit RL78/G14 microcontroller with 48 KB flash, 5.5 KB RAM, and 4 KB data flash, operating at 1.6–5.5 V. It delivers 44 DMIPS at 32 MHz, features ultra-low-power HALT/STOP/SNOOZE modes (66 μA/MHz active, 0.60 μA RTC+LVD), and integrates 10-bit ADC (16 channels), UART/I²C/CSI interfaces, RTC, and on-chip debug. Used in battery-powered industrial sensors and smart metering endpoints.

For engineers reviewing the R5F104EEGNA#20 datasheet, R5F104EEGNA#20 pinout, R5F104EEGNA#20 application, or R5F104EEGNA#20 equivalent, key selection criteria include its 40-pin 6×6 mm HWQFN-0.5 mm pitch package, 48 KB code flash with self-programming and flash shield window, 10-bit ADC with internal reference and temperature sensor, and support for LIN-bus via UART.

Technical Context

The R5F104EEGNA#20 implements the RL78 CPU core with CISC architecture, 3-stage pipeline, and configurable instruction timing (0.03125 µs @ 32 MHz to 30.5 µs @ 32.768 kHz). It includes a Data Transfer Controller (DTC) supporting normal, repeat, and block transfer modes triggered by 19–26 event sources via the Event Link Controller (ELC).

Its peripheral set includes Timer Array Unit (TAU) with up to 8 channels, 12-bit interval timer, real-time clock with calendar/alarm/correction, watchdog timer, 8-bit D/A converter (up to 2 channels), and comparator (up to 2 channels) with selectable internal/external reference voltage.

Key Specifications

Pinout & Package

Package: 40-pin HWQFN (6 × 6 mm, 0.5 mm pitch), exposed die pad recommended to be connected to VSS. Complies with JEDEC MO-220 standard.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 16-bit microcontroller applications.

Compared with R5F104EGGNA#20, the R5F104EEGNA#20 offers optimized cost and footprint for fixed-function devices with stable firmware, while R5F104EEGNA#30 provides identical silicon in tape format for scalable manufacturing - neither requires PCB redesign or firmware adaptation.

Availability

R5F104EEGNA#20 is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, home appliance control, and automotive body electronics requiring stable component supply and long-term lifecycle support.

Supply support for R5F104EEGNA#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 industrial, automotive, and IoT markets.

The RL78/G14 family is designed for ultra-low-power general-purpose embedded control - balancing performance, energy efficiency, and integration for cost-sensitive industrial and consumer applications.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating of the R5F104EEGNA#20?

The R5F104EEGNA#20 operates at up to 32 MHz and delivers 44 DMIPS. This performance level is achieved using the RL78 CPU core's 3-stage pipeline and high-speed on-chip oscillator, which maintains ±1.0% accuracy across 1.8–5.5 V and -40°C to +105°C. The R5F104EEGNA#20 sustains this speed while consuming only 66 μA per MHz in active mode.

Does the R5F104EEGNA#20 support LIN bus communication, and how is it implemented?

Yes, the R5F104EEGNA#20 supports LIN bus communication through its UART peripherals, which include hardware features required by ISO 17987-4: automatic sync-break detection, checksum generation (classic and enhanced), and identifier filtering. The R5F104EEGNA#20 uses UART2 or UART3 configured in LIN mode, eliminating need for external transceivers in slave-node applications such as automotive seat controls.

What are the flash memory configuration details for the R5F104EEGNA#20, including block size and security features?

The R5F104EEGNA#20 contains 48 KB of code flash memory organized in 1 KB blocks, enabling granular erase operations. It supports flash shield window for secure firmware updates and prohibits block erase/rewrite in protected regions. The R5F104EEGNA#20 also includes boot swapping capability and on-chip debug lock to prevent unauthorized access during development and field deployment.

How does the R5F104EEGNA#20 achieve ultra-low-power operation, and what are its lowest power states?

The R5F104EEGNA#20 achieves ultra-low-power operation via multiple low-power modes: HALT (CPU stopped, peripherals active), STOP (all clocks halted except RTC/LVD), and SNOOZE (selected peripherals active while CPU sleeps). Its lowest state is STOP mode drawing just 0.60 μA with RTC and LVD operational - verified at VDD = 1.8–5.5 V and TA = -40°C to +105°C. The R5F104EEGNA#20 enters STOP mode in under 5 µs.

What analog peripherals are integrated into the R5F104EEGNA#20, and what are their key specifications?

The R5F104EEGNA#20 integrates a 10-bit successive-approximation ADC with 16 input channels, internal 1.45 V reference voltage, and integrated temperature sensor; an 8-bit DAC with up to two output channels (0–VDD range); and up to two comparators with selectable internal/external reference. These analog resources operate across the full 1.6–5.5 V supply range and support background operation during flash rewrites - all confirmed in the R5F104EEGNA#20 datasheet Rev. 3.70.