Renesas R5F51403ADFK#50

Overview

R5F51403ADFK#50 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, 12-bit A/D converter (11 external channels), two 8-bit D/A channels, and capacitive touch sensing (32 keys). 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 engineers reviewing the R5F51403ADFK#50 datasheet, R5F51403ADFK#50 pinout, R5F51403ADFK#50 application, or R5F51403ADFK#50 equivalent, this page delivers verified specifications, package mapping to PLQP0064GA-A (14 × 14 mm, 0.8 mm pitch), validated pin functions, real-world use cases, and two confirmed alternative parts with documented functional and application differences.

Technical Context

The R5F51403ADFK#50 implements the RXv2 CPU core with IEEE-754-compliant 32-bit FPU, 204 CoreMark score at 48 MHz, and on-chip 32-bit divider (2-cycle latency). Its clock system integrates HOCO (48 MHz ±1%), sub-clock oscillator (32.768 kHz), PLL, and CAC for accuracy monitoring.

Peripheral integration includes ELC for event-driven module activation without CPU intervention, DTC for five transfer modes, MPC for flexible pin function assignment, and CTSU2SL supporting self-capacitance (32-key) and mutual-capacitance (8×8 matrix) touch sensing - all within a single-chip architecture requiring no external memory or clock sources.

Key Specifications

Pinout & Package

Package: PLQP0064GA-A - 64-pin LQFP, 14 × 14 mm body, 0.8 mm pitch, exposed pad not specified, RoHS-compliant lead-free finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F51403ADFK#50, R5F51403ADFM#30 offers identical functionality in a smaller 10 × 10 mm package with tighter 0.5 mm pitch, while R5F51405ADFK#30 provides double the flash and RAM capacity in the same 14 × 14 mm LQFP footprint - both retain full peripheral compatibility and require no firmware changes.

Availability

R5F51403ADFK#50 is available at Aetrix Electronics and suitable for industrial motor control, smart appliance interfaces, energy metering gateways, and factory automation I/O modules requiring stable component supply across extended product lifecycles.

Supply support for R5F51403ADFK#50 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 industrial and consumer applications requiring robust real-time performance, integrated analog, low-power operation, and functional safety support - with R5F51403ADFK#50 optimized for 64 KB code size constraints and LQFP packaging.

FAQ

What is the maximum operating frequency and core type of the R5F51403ADFK#50?

The R5F51403ADFK#50 features a 32-bit RXv2 CPU core with a maximum operating frequency of 48 MHz. It achieves 204 CoreMark at this speed and includes an IEEE-754-compliant 32-bit floating-point unit, 32-bit multiplier, and 2-cycle divider - all verified in the official Renesas datasheet R01DS0379EJ0120. This enables deterministic real-time control in applications like motor drives and sensor processing.

Does the R5F51403ADFK#50 include a real-time clock (RTC) and capacitive touch sensing?

Yes, the R5F51403ADFK#50 includes a real-time clock (RTCB) module supporting calendar count mode and binary count mode, driven by the 32.768 kHz sub-clock oscillator. It also integrates the CTSU2SL capacitive touch sensing unit, supporting up to 32 self-capacitance keys - both confirmed in Table 1.2 of the R01DS0379EJ0120 datasheet for the 64-pin LQFP variant (R5F51403ADFK#50).

What are the memory resources available on the R5F51403ADFK#50?

The R5F51403ADFK#50 provides 64 KB of on-chip flash memory (programmable at 1.8 V), 16 KB of SRAM with zero-wait-state access, and 4 KB of data flash rated for 1,000,000 program/erase cycles. These values are explicitly listed in Table 1.3 of the R01DS0379EJ0120 datasheet under the "R5F51403ADFK" entry, confirming its position in the 64-Kbyte ROM subgroup of the RX140 family.

Which communication interfaces does the R5F51403ADFK#50 support?

The R5F51403ADFK#50 supports one CAN channel (ISO 11898-1, up to 1 Mbps), five SCI channels (including asynchronous, clock-synchronous, and smart card modes), one I²C bus interface (400 kbps, SMBus compatible), and one RSPI channel (16 Mbps). These are confirmed in Table 1.2 of the R01DS0379EJ0120 datasheet for the 64-pin LQFP package (ADFK), where CAN, SCIg (3 channels), SCIh (1 channel), RIICa, and RSPIc are marked as available.

What is the package type and pin count of the R5F51403ADFK#50?

The R5F51403ADFK#50 uses the PLQP0064GA-A package: a 64-pin LQFP with 14 × 14 mm body size and 0.8 mm pin pitch. This is unambiguously defined in Figure 1.1 (part number decoding) and Table 1.3 of the R01DS0379EJ0120 datasheet, where "FK" maps to "LQFP/64/0.80", and the "D" suffix confirms the –40 to +85°C temperature grade.