Renesas R5F52305ADNE#20

Overview

R5F52305ADNE#20 from Renesas is a 32-bit RXv2 microcontroller operating at up to 54 MHz, featuring a single-precision IEEE 754 FPU, 128 KB on-chip flash memory, 32 KB SRAM, and integrated 12-bit A/D (24 channels) and D/A (2 channels) converters. It supports USB 2.0 full-speed device operation, CAN 2.0B (ISO 11898-1), capacitive touch sensing (24 keys), and operates across −40 to +85°C in a 48-pin HWQFN package (7 × 7 mm, 0.5 mm pitch).

For engineers reviewing the R5F52305ADNE#20 datasheet, R5F52305ADNE#20 pinout, R5F52305ADNE#20 application, or R5F52305ADNE#20 equivalent, key selection considerations include its 54-MHz RXv2 core with FPU, USB/CAN dual-interface capability, 24-channel ADC with sub-μs conversion, hardware encryption (TSIP-Lite), and support for IEC60730-compliant safety functions.

Technical Context

The R5F52305ADNE#20 implements the RXv2 CPU core with Harvard architecture, 5-stage pipeline, and variable-length instructions, delivering 88.56 DMIPS at 54 MHz. It integrates a dedicated USB-dedicated PLL (4/6/8/12 MHz outputs), sub-clock RTC with calendar mode, and independent watchdog timer driven by a 15-kHz on-chip oscillator.

Its peripheral set includes ELC for event-driven module triggering without CPU intervention, DTC for interrupt-triggered data transfers, and CTSU supporting both self- and mutual-capacitance touch sensing. The MCU lacks SDHI and CAN modules per Table 1.2 - confirmed for 48-pin RX230 Group variants - and omits external bus interface support.

Key Specifications

Pinout & Package

Package: PWQN0048KB-A - 48-pin HWQFN, 7 × 7 mm body, 0.5 mm pitch, exposed thermal pad, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 32-bit MCU applications.

Compared with R5F52305ADNE#20, R5F52315ADNE#U0 adds data flash for robust parameter storage, while R5F52306ADNE#U0 doubles flash capacity for advanced connectivity stacks - both retain identical peripheral sets, timing performance, and safety features in the 48-pin HWQFN form factor.

Availability

R5F52305ADNE#20 is available at Aetrix Electronics and suitable for industrial automation, home appliance control, and USB-connected embedded systems requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for R5F52305ADNE#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 RX230 Group targets cost-sensitive, safety-aware embedded applications requiring USB connectivity, capacitive touch, and IEC60730 compliance - optimized for appliances, building controls, and sensor edge nodes.

FAQ

What is the maximum operating frequency of the R5F52305ADNE#20?

The R5F52305ADNE#20 operates at a maximum system clock frequency of 54 MHz. This is achieved using the on-chip PLL with a 4–12.5 MHz input source, enabling 88.56 DMIPS performance and sub-microsecond peripheral response times. The 54-MHz clock drives the CPU, SRAM, and most peripherals including the 12-bit ADC (S12ADE) and USB module, ensuring deterministic real-time behavior in control applications.

Does the R5F52305ADNE#20 include CAN or SD host interface functionality?

No, the R5F52305ADNE#20 does not include CAN or SD host interface (SDHI) functionality. Per Table 1.2 in the official datasheet (R01DS0261EJ0120), these modules are explicitly omitted from all 48-pin RX230 Group variants, including R5F52305ADNE#20. The part retains USB 2.0 full-speed device/OTG, SCI, I²C, RSPI, and capacitive touch, making it suitable for USB-centric HMI and sensor applications without automotive bus requirements.

What package type and pin count does the R5F52305ADNE#20 use?

The R5F52305ADNE#20 uses the PWQN0048KB-A package: a 48-pin HWQFN with 7 × 7 mm body size, 0.5 mm pitch, and an exposed thermal pad. This RoHS-compliant package supports reflow soldering and provides compact layout for space-constrained designs such as smart thermostats and portable industrial tools, while maintaining thermal performance for continuous 54-MHz operation.

How much on-chip flash and SRAM does the R5F52305ADNE#20 provide?

The R5F52305ADNE#20 integrates 128 KB of on-chip flash memory for program storage and 32 KB of zero-wait-state SRAM for data and stack operations. Flash supports single-voltage (1.8 V) programming and background operation (BGO), allowing firmware updates without halting execution. SRAM operates at full 54-MHz speed with no wait states, ensuring deterministic performance for real-time tasks like motor control and sensor sampling.

Is the R5F52305ADNE#20 qualified for industrial temperature range operation?

Yes, the R5F52305ADNE#20 is rated for industrial operation from −40 to +85°C (D version). This temperature grade is validated across all electrical specifications including 54-MHz operation, 12-bit ADC accuracy, USB functionality, and low-power modes. The qualification ensures reliable deployment in factory automation controllers, HVAC systems, and outdoor consumer electronics without derating or thermal management overhead.