Renesas R5F104BDGNA#20

Overview

R5F104BDGNA#20 from Renesas is a 32-pin HWQFN-packaged 16-bit RL78/G14 microcontroller with 32 KB flash, 4 KB data flash, and 4 KB RAM, operating from 1.6–5.5 V at -40 to +105°C (industrial grade G), delivering 44 DMIPS at 32 MHz for low-power embedded control in motor drives, sensor nodes, and industrial HMI.

For engineers reviewing the R5F104BDGNA#20 datasheet, R5F104BDGNA#20 pinout, R5F104BDGNA#20 application, or R5F104BDGNA#20 equivalent, key selection criteria include its 32-pin 5×5 mm HWQFN package, integrated RTC + LVD + 10-bit ADC (20-channel), ultra-low power HALT/STOP/SNOOZE modes, and support for LIN-bus UART and hardware DTC/ELC peripherals.

Technical Context

The R5F104BDGNA#20 implements the RL78 CPU core with 3-stage pipeline, supporting instruction execution times from 0.03125 µs (32 MHz) to 30.5 µs (32.768 kHz), plus multiply/divide/accumulate instructions and 1 MB address space. It integrates a high-accuracy ±1.0% on-chip oscillator (1–64 MHz selectable) and dedicated low-speed oscillator for watchdog operation.

Peripherals include eight 16-bit timer channels (TAU, RJ, RD, RG), one 12-bit interval timer, calendar-mode real-time clock with alarm/correction, 10-bit ADC with internal 1.45 V reference and temperature sensor, two 8-bit DAC outputs, and up to ten I²C/SPI/UART interfaces - all managed via Event Link Controller (ELC) and Data Transfer Controller (DTC) for autonomous event-driven operation.

Key Specifications

Pinout & Package

Package: 32-pin HWQFN (5 × 5 mm, 0.5 mm pitch), exposed die pad recommended to be connected to VSS. Compliant with JEDEC MO-220, RoHS and MSL3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F104BEGNA#20 and R5F104CDGNA#20, the R5F104BDGNA#20 delivers optimal balance of code density, RAM headroom, and industrial temperature support - enabling full feature implementation in compact 32-pin HWQFN without over-provisioning memory or sacrificing thermal robustness.

Availability

R5F104BDGNA#20 is available at Aetrix Electronics and suitable for industrial motor control, smart building HMI, and battery-powered sensor node applications requiring stable component supply, long-term lifecycle assurance, and automotive-qualified manufacturing traceability.

Supply support for R5F104BDGNA#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 product line delivers true low-power performance (66 μA/MHz, 0.60 μA STOP) with rich analog integration and event-driven peripherals - engineered for cost-sensitive, thermally demanding embedded control applications.

FAQ

What is the maximum operating frequency and corresponding DMIPS rating for the R5F104BDGNA#20?

The R5F104BDGNA#20 operates at up to 32 MHz using its high-speed on-chip oscillator, achieving 44 DMIPS performance. This is measured under standard conditions (VDD = 1.8–5.5 V, TA = -40 to +105°C) and reflects the RL78 core's 3-stage pipeline efficiency. The R5F104BDGNA#20 supports lower frequencies (e.g., 32.768 kHz) for ultra-low-power RTC operation with 30.5 µs instruction time.

Does the R5F104BDGNA#20 support LIN bus communication, and which UART channels provide it?

Yes, the R5F104BDGNA#20 supports LIN bus communication via its UART peripherals. Specifically, UART0 (P50/P51) and UART2 (P13/P14) are LIN-capable, with built-in LIN break detection and sync field generation per ISO 9141-2 and ISO 14230 standards. The R5F104BDGNA#20 includes dedicated LIN control registers and automatic checksum handling in hardware.

What are the flash memory organization and write endurance specifications for the R5F104BDGNA#20?

The R5F104BDGNA#20 contains 32 KB of code flash memory organized in 1 KB blocks, and 4 KB of data flash memory. Data flash supports background operation (BGO), allowing program execution during rewrite. Endurance is rated at 1,000,000 write/erase cycles (typical) across the full VDD range (1.8–5.5 V), with no minimum voltage requirement for data flash writes.

How does the R5F104BDGNA#20 implement ultra-low-power operation, and what modes are available?

The R5F104BDGNA#20 implements ultra-low-power operation through three primary modes: HALT (66 μA/MHz), STOP (0.60 μA with RTC + LVD active), and SNOOZE (low-power peripheral operation while CPU sleeps). Each mode disables specific clocks and circuits; STOP mode retains RAM content and allows wake-up via RTC alarm, LVD interrupt, or external pin. The R5F104BDGNA#20 achieves these values at VDD = 1.8–5.5 V and TA = -40 to +105°C.

What analog features are integrated into the R5F104BDGNA#20, and how many channels do they support?

The R5F104BDGNA#20 integrates a 10-bit successive-approximation ADC with up to 20 input channels, an internal 1.45 V reference voltage, and an on-die temperature sensor. It also includes two 8-bit DAC channels with 0–VDD output range and real-time update capability. No external reference or op-amp is required for basic thermal monitoring or analog output tasks - all supported directly by the R5F104BDGNA#20 silicon.