Renesas R7FS124772A01CLM#AC1

Overview

R7FS124772A01CLM from Renesas is an ultra-low-power 32-MHz Arm® Cortex-M0+ microcontroller with 128-KB code flash, 16-KB SRAM, integrated Capacitive Touch Sensing Unit (CTSU), 14-bit ADC, 12-bit DAC, USB 2.0 Full-Speed with BC1.2 support, CAN 2.0B, and hardware AES/ TRNG - deployed in industrial HMI panels, smart sensor nodes, and battery-powered control modules.

For engineers reviewing the R7FS124772A01CLM datasheet, R7FS124772A01CLM pinout, R7FS124772A01CLM application, or R7FS124772A01CLM equivalent, key selection considerations include its 36-pin LGA package, –40°C to +85°C temperature grade, dual watchdog timers (WDT/IWDT), CAC-based clock accuracy monitoring, and 22 GPIOs with 2×5-V-tolerant pins - all critical for fail-safe embedded control and touch-enabled edge devices.

Technical Context

The R7FS124772A01CLM implements a single-core Arm Cortex-M0+ (Armv6-M, r0p1-00rel0) running at up to 32 MHz, with CoreSight MTB-M0+ trace and SW-DP debug. Its memory subsystem includes 128-KB code flash (with area protection), 4-KB data flash (100k erase/write cycles), and 16-KB SRAM with parity checking.

System-level features include Event Link Controller (ELC) for CPU-free peripheral coordination, Data Transfer Controller (DTC), Realtime Clock (RTC) with calendar mode, and Clock Frequency Accuracy Measurement Circuit (CAC) using internal or external reference - enabling deterministic timing validation in safety-aware applications.

Key Specifications

Pinout & Package

Package: 36-pin LGA (PWLG0036KA-A), 4 mm × 4 mm, 0.5 mm pitch, exposed die pad (recommended to connect to VSS).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FS124773A01CFM, the R7FS124772A01CLM trades I/O count and temperature range for compactness and lower system cost; versus R7FS124762A01CLM, it doubles flash capacity and expands analog/touch capability - making it optimal for mid-tier industrial edge controllers balancing feature density and footprint.

Availability

R7FS124772A01CLM is available at Aetrix Electronics and suitable for industrial HMI panels, smart sensor nodes, and energy monitoring modules requiring stable component supply across multi-year production cycles.

Supply support for R7FS124772A01CLM 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 delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT applications.

The R7FS124772A01CLM belongs to the S124 Microcontroller Group - designed specifically for ultra-low-power, safety-aware, and human-machine interface–centric embedded systems demanding integrated analog, secure connectivity, and robust real-time control.

FAQ

What is the maximum operating frequency and core architecture of the R7FS124772A01CLM?

The R7FS124772A01CLM features an Arm Cortex-M0+ core compliant with the Armv6-M architecture and operates at a maximum frequency of 32 MHz. It includes a single-cycle integer multiplier, SysTick timer, and CoreSight MTB-M0+ trace capability. This configuration delivers deterministic real-time performance while maintaining ultra-low power consumption - essential for battery-operated and thermally constrained applications where the R7FS124772A01CLM is deployed.

Does the R7FS124772A01CLM support USB device functionality with battery charging detection?

Yes, the R7FS124772A01CLM integrates a USB 2.0 Full-Speed Module (USBFS) with an on-chip transceiver and supports USB Battery Charging Specification 1.2. It detects wall adapters, standard downstream ports, and charging downstream ports via D+/D− line analysis. The internal USB LDO regulator supplies 3.3 V to the transceiver when powered at 5 V - enabling self-powered USB device operation without external regulators, a key advantage in compact R7FS124772A01CLM-based designs.

How many analog input channels does the 14-bit ADC (ADC14) support on the R7FS124772A01CLM?

The R7FS124772A01CLM's 14-bit ADC (ADC14) supports up to 18 analog input channels, including AN000–AN010 and AN016–AN022. It also accepts internal sources such as the temperature sensor (TSN) and internal reference voltage (Vref). Resolution is selectable between 12-bit and 14-bit modes, allowing designers to optimize conversion speed versus precision - a flexibility confirmed in the R7FS124772A01CLM's User's Manual section 30.

What safety and security features are implemented in hardware on the R7FS124772A01CLM?

The R7FS124772A01CLM includes hardware-based safety and security features: SRAM parity error detection, flash area protection, ADC self-diagnosis, Clock Frequency Accuracy Measurement Circuit (CAC), Cyclic Redundancy Check (CRC) calculator, Data Operation Circuit (DOC), Independent Watchdog Timer (IWDT), and register write protection. It also integrates AES128/256 encryption engines and a True Random Number Generator (TRNG) - all documented in the R7FS124772A01CLM datasheet sections covering safety and security subsystems.

What is the package type and pin count of the R7FS124772A01CLM, and how does it compare to other S124 group variants?

The R7FS124772A01CLM uses a 36-pin LGA package (PWLG0036KA-A), measuring 4 mm × 4 mm with 0.5 mm pitch and an exposed die pad. Unlike the 64-pin LQFP/QFN variants (e.g., R7FS124773A01CFM), it offers 22 GPIOs, 2×5-V-tolerant pins, and operates from –40°C to +85°C - making it the smallest-footprint, cost-optimized member of the S124 family while retaining full 128-KB flash and core peripheral sets found in the R7FS124772A01CLM datasheet.