Renesas R5F51104AGNE#20

Overview

R5F51104AGNE#20 from Renesas is a 32-bit RX CPU-based microcontroller operating at up to 32 MHz (50 DMIPS), featuring 96 KB on-chip flash, 16 KB SRAM, 12-bit A/D converter with 10 channels, RTC, and dual SCI + I²C + RSPI interfaces. It targets low-power industrial sensing and control applications requiring deterministic real-time response and IEC 60730 compliance.

For engineers reviewing the R5F51104AGNE#20 datasheet, R5F51104AGNE#20 pinout, R5F51104AGNE#20 application, or R5F51104AGNE#20 equivalent, key selection criteria include its HWQFN-48 package (7 × 7 mm, 0.5 mm pitch), −40 to +105°C extended temperature grade, 1.8–3.6 V single-supply operation, software standby mode (0.35 μA), and integrated clock accuracy measurement (CAC) for functional safety.

Technical Context

The R5F51104AGNE#20 implements a CISC Harvard architecture with five-stage pipeline and variable-length instructions, enabling ultra-compact code and single-cycle instruction execution. Its 32-bit RX core includes a 64-bit accumulator and dedicated 32×32 multiplier/divider for efficient DSP operations.

On-chip peripherals are clocked independently: ICLK (system, up to 32 MHz), PCLK (peripherals, up to 32 MHz), and FCLK (FlashIF, up to 32 MHz). The MCU supports three low-power modes-sleep, deep sleep, and software standby-with 4.8 μs wake-up from standby and hardware-assisted RAM retention.

Key Specifications

Pinout & Package

Packaged in a 48-pin HWQFN (PWQN0048KB-A), 7 × 7 mm body, 0.5 mm pitch, with exposed thermal 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 R5F51104ADNE#U0, the R5F51104AGNE#20 adds extended temperature support and higher-frequency operation across full voltage range; compared with R5F51103AGNE#U0, it provides 32 KB additional flash for feature-rich firmware or bootloader+application separation.

Availability

R5F51104AGNE#20 is available at Aetrix Electronics and suitable for industrial automation, appliance control, and energy metering applications requiring stable component supply, long-term lifecycle assurance, and extended temperature performance.

Supply support for R5F51104AGNE#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 Corporation is a global semiconductor leader specializing in microcontrollers, analog, and power solutions for automotive, industrial, and IoT markets.

The RX110 Group, including R5F51104AGNE#20, was designed for cost-sensitive, low-power embedded systems demanding real-time performance, functional safety features, and compact packaging - especially in white goods and industrial sensors.

FAQ

What is the maximum operating frequency and associated performance of the R5F51104AGNE#20?

The R5F51104AGNE#20 operates at a maximum frequency of 32 MHz, delivering 50 DMIPS of processing performance. This is achieved through its optimized RX CPU core with five-stage pipeline and single-cycle instruction execution. The 32 MHz speed is guaranteed across the full 1.8–3.6 V supply range and −40 to +105°C temperature range, making R5F51104AGNE#20 suitable for high-reliability industrial timing-critical applications.

Does the R5F51104AGNE#20 support IEC 60730 Class B compliance out of the box?

Yes, the R5F51104AGNE#20 integrates hardware features essential for IEC 60730 Class B: clock frequency accuracy measurement (CAC), independent watchdog timer (IWDT) with dedicated 15 kHz oscillator, voltage detection circuits (LVD) with configurable thresholds, and RAM test assist functions. These reduce software certification burden, though final system-level validation remains the designer's responsibility. R5F51104AGNE#20 is explicitly referenced in Renesas' IEC 60730 documentation for the RX110 Group.

What package type and pin count does the R5F51104AGNE#20 use?

The R5F51104AGNE#20 uses a 48-pin HWQFN package (Renesas code PWQN0048KB-A), measuring 7 × 7 mm with 0.5 mm pitch and an exposed thermal pad. This compact, lead-free package supports high-density PCB layouts and efficient thermal dissipation when the pad is soldered to a VSS plane. Pin compatibility is maintained across all RX110 48-pin variants, including R5F51103AGNE#U0 and R5F51101AGNE#U0.

How many A/D converter channels does the R5F51104AGNE#20 provide, and what is their resolution and speed?

The R5F51104AGNE#20 includes a 12-bit successive-approximation A/D converter (S12AD) with 10 usable input channels (AN000–AN004, AN006, AN008–AN015 per datasheet Table 1.2). It achieves a minimum conversion time of 1.0 μs per channel when ADCLK runs at 32 MHz. The unit supports scan modes, double-trigger for motor control, and external trigger inputs - all accessible without CPU intervention via DTC or timer linkage.

Can the R5F51104AGNE#20 operate from a single 1.8 V supply, and what are the implications for flash programming?

Yes, the R5F51104AGNE#20 operates from a single 1.8–3.6 V supply and supports flash programming at 1.8 V. At 1.8 V, maximum operating frequency is limited to 8 MHz (per datasheet Table 1.1), but full 96 KB flash write/erase functionality remains available. This enables ultra-low-voltage operation in energy-harvesting or coin-cell-powered systems where R5F51104AGNE#20 maintains programmability without external voltage boosting.