Renesas R5F51403ADNH#30

Overview

R5F51403ADNH#30 from Renesas is a 32-bit RXv2 core MCU operating at up to 48 MHz, featuring 64 KB flash, 16 KB SRAM, 4 KB data flash, 8-bit D/A converter (2 ch), 12-bit A/D converter (8 ch), and capacitive touch sensing (12 ch). It supports CAN, SCI, I²C, RSPI, RTC, low-power modes, and operates from 1.8–5.5 V in industrial temperature range (–40 to +85°C) for embedded control applications.

For engineers reviewing the R5F51403ADNH#30 datasheet, R5F51403ADNH#30 pinout, R5F51403ADNH#30 application, or R5F51403ADNH#30 equivalent, key selection considerations include its 32-pin HWQFN (5 × 5 mm, 0.5 mm pitch) package, absence of CAN and RTC modules, encryption-disabled configuration, and reduced peripheral count versus larger RX140 variants - critical for cost-optimized, space-constrained industrial sensor and HMI designs.

Technical Context

The R5F51403ADNH#30 implements the RXv2 CPU core with IEEE-754-compliant 32-bit FPU, 204 CoreMark performance at 48 MHz, and on-chip divider completing 32-bit ÷ 32-bit operations in two cycles. Its memory subsystem includes no-wait-state SRAM and flash with 1- or 0-wait access depending on clock frequency.

Peripheral integration centers on event-driven operation via ELC, enabling timer-triggered A/D conversion and module linking without CPU intervention. Power management includes four low-power modes, software standby current of 0.25 µA (typ.), and 6.2 µs wake-up time from standby using 32 MHz HOCO.

Key Specifications

Pinout & Package

PWQN0032KE-A is a 32-pin wettable flank QFN package (5 × 5 mm, 0.5 mm pitch) with exposed thermal pad, optimized for automated optical inspection and thermal dissipation in compact industrial PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F51403ADNH#30, the R5F51403ADFL#30 offers expanded I/O and RTC at the cost of larger area and higher thermal resistance, while R5F51403ADFJ#30 provides identical functionality in a leaded package for easier handling and thermal management - all three share the same 64 KB/16 KB/4 KB memory configuration and peripheral subset.

Availability

R5F51403ADNH#30 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart appliance control panels, embedded gateway modules, and portable diagnostic tools requiring stable component supply across production lifecycles.

Supply support for R5F51403ADNH#30 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, power, and SoC solutions for automotive, industrial, and IoT markets.

The RX140 Group targets cost-sensitive, low-power embedded applications requiring rich analog integration, capacitive touch, and functional safety support - designed specifically for industrial HMI, sensor nodes, and appliance control where code efficiency and peripheral flexibility are critical.

FAQ

What is the maximum operating frequency and core type of the R5F51403ADNH#30?

The R5F51403ADNH#30 features a 32-bit RXv2 CPU core with a maximum operating frequency of 48 MHz. It achieves 204 CoreMark performance at this speed and includes an IEEE-754-compliant 32-bit floating-point unit. The core uses a CISC Harvard architecture with five-stage pipeline and variable-length instructions, enabling ultra-compact code size and deterministic real-time execution essential for industrial control tasks handled by the R5F51403ADNH#30.

Does the R5F51403ADNH#30 include CAN or RTC functionality?

No, the R5F51403ADNH#30 does not include CAN or RTC modules. As confirmed in Table 1.2 of the datasheet, CAN is unavailable in all 32-pin RX140 variants, and RTC is explicitly listed as "Not supported" for the 32-pin package configurations. This omission aligns with its positioning as a cost- and space-optimized variant within the RX140 family. Engineers selecting the R5F51403ADNH#30 must implement timekeeping externally or choose a larger package variant if RTC is required.

What are the memory resources available on the R5F51403ADNH#30?

The R5F51403ADNH#30 integrates 64 KB of on-chip flash memory (programmable at 1.8 V), 16 KB of SRAM with no wait states, and 4 KB of data flash rated for 1,000,000 program/erase cycles. Flash access is zero-wait up to 32 MHz and one-wait from 32–48 MHz. These memory resources support robust firmware storage, real-time data buffering, and non-volatile parameter retention - sufficient for standalone operation in applications like sensor nodes and HMI controllers built around the R5F51403ADNH#30.

Which communication interfaces are supported by the R5F51403ADNH#30?

The R5F51403ADNH#30 supports two SCI channels (SCIk), one I²C bus interface (RIICa), and one RSPI channel (RSPIc). It does not include CAN, SCIh, or SCIg beyond the two SCIk instances. Each SCI supports asynchronous, clock-synchronous, and smart card modes with flexible baud rate generation. The I²C interface operates up to 400 kbps and supports SMBus, while RSPI achieves up to 16 Mbps with 8–32 bit frame lengths and double-buffered transfers - meeting connectivity needs for industrial sensors and control panels using the R5F51403ADNH#30.

What is the package type and thermal specification of the R5F51403ADNH#30?

The R5F51403ADNH#30 uses the PWQN0032KE-A package: a 32-pin HWQFN with 5 × 5 mm body, 0.5 mm pitch, and wettable flank leads for reliable solder joint inspection. It operates over the industrial temperature range of –40 to +85°C (denoted by 'D' in the part number). The exposed thermal pad enhances heat dissipation in compact PCB layouts, making it suitable for sealed enclosures or thermally constrained environments typical in applications deploying the R5F51403ADNH#30.