Renesas R5F51138ADLJ#30

Overview

R5F51138ADLJ#30 from Renesas is a 32-bit RX CPU-based microcontroller operating at up to 32 MHz (50 DMIPS), featuring 512 KB on-chip flash, 64 KB SRAM, 8 KB data flash, USB 2.0 full-speed host/function/OTG, 17-channel 12-bit A/D converter, and capacitive touch sensing unit (CTSU) with 12 detection channels - deployed in industrial HMI, portable medical devices, and smart sensor nodes requiring integrated analog, timing, and human interface functions.

For engineers reviewing the R5F51138ADLJ#30 datasheet, R5F51138ADLJ#30 pinout, R5F51138ADLJ#30 application, or R5F51138ADLJ#30 equivalent, this page delivers verified technical context, package-specific pin mapping, real-world use scenarios, and validated alternative options for embedded control, low-power USB-connected systems, and touch-enabled edge devices.

Technical Context

The R5F51138ADLJ#30 implements a CISC Harvard-architecture RX core with five-stage pipeline, variable-length instructions, and 64-bit accumulator for single-cycle 32×32 multiply-accumulate operations. It integrates an Event Link Controller (ELC) enabling direct inter-module triggering without CPU intervention and a Data Transfer Controller (DTC) supporting chain transfers across four modes.

Its clock system includes a high-speed on-chip oscillator (32 MHz ±1% over –20 to +85°C), USB-dedicated PLL (6/8 MHz), sub-clock oscillator (32.768 kHz), and Clock Accuracy Measurement circuit (CAC) for IEC 60730 compliance. Power management supports software standby mode (0.44 µA) with 4.8 µs wake-up and low-power timer (LPT) operation during sleep.

Key Specifications

Pinout & Package

Package: TFLGA-100 (PTLG0100JA-A), 7 mm × 7 mm body, 0.65 mm pitch, exposed pad thermal design.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R5F51138ADLJ#30, R5F51138ADFP#3A offers identical functionality in a larger, more manufacturable package, while R5F51137ADLJ#2A provides full peripheral compatibility at lower flash capacity-both retain CTSU, USB OTG, and LCD support, making them drop-in alternatives for footprint-constrained or cost-driven designs.

Availability

R5F51138ADLJ#30 is available at Aetrix Electronics and suitable for industrial HMI, portable medical devices, and smart sensor nodes requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for R5F51138ADLJ#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 RX113 Group targets cost-sensitive, low-power embedded applications demanding rich analog integration, USB connectivity, and human interface features-designed specifically for industrial controls, medical wearables, and smart home endpoints.

FAQ

What is the maximum operating frequency and core architecture of the R5F51138ADLJ#30?

The R5F51138ADLJ#30 features a 32-bit RX CPU core with a maximum operating frequency of 32 MHz, delivering 50 DMIPS performance. Its architecture combines CISC instruction set, five-stage pipeline, variable-length encoding, and a 64-bit accumulator for single-cycle 32×32 multiply-accumulate operations. The R5F51138ADLJ#30 achieves zero-wait-state execution from flash at full speed due to its optimized bus interface and prefetch logic.

Does the R5F51138ADLJ#30 support USB On-The-Go (OTG) functionality?

Yes, the R5F51138ADLJ#30 integrates a USB 2.0 host/function module compliant with USB OTG specification. It supports full-speed (12 Mbps) and low-speed (1.5 Mbps) operation, isochronous transfers, and Battery Charging (BC) detection. The R5F51138ADLJ#30 uses dedicated USB pins (USB0_DP/DM), VBUS monitoring (USB0_VBUS), and OTG control signals (USB0_ID, USB0_EXICEN, USB0_VBUSEN) to enable dual-role operation without external PHY.

What are the key low-power capabilities of the R5F51138ADLJ#30?

The R5F51138ADLJ#30 offers three low-power modes: sleep, deep sleep, and software standby. In software standby mode, it draws just 0.44 µA while retaining SRAM content and enabling wake-up via RTC alarm, LPT interrupt, or external pin. Recovery time is 4.8 µs. Its low-power timer (LPT) operates using the sub-clock or IWDT oscillator, allowing precise timing during sleep without waking the CPU-critical for battery longevity in portable R5F51138ADLJ#30 designs.

How many capacitive touch channels does the R5F51138ADLJ#30 support, and what package dependency applies?

The R5F51138ADLJ#30 supports 12 capacitive touch sensing channels (TS0–TS11) via its integrated Capacitive Touch Sensing Unit (CTSU). This capability is explicitly enabled only in the 100-pin package variants-including the R5F51138ADLJ#30's TFLGA-100 (PTLG0100JA-A)-and is not available in 64-pin versions. The CTSU includes hardware noise cancellation and supports both self- and mutual-capacitance methods.

What is the flash and data flash endurance specification for the R5F51138ADLJ#30?

The R5F51138ADLJ#30 includes 512 KB of on-chip flash memory for program code and 8 KB of dedicated data flash memory. The data flash is rated for 1,000,000 erase/write cycles (typical), supports background operation (BGO), and is programmable at 1.8 V. Flash memory supports serial programming via USB or asynchronous SCI, and both memory types operate with zero wait states at 32 MHz-ensuring deterministic real-time execution in the R5F51138ADLJ#30.