Renesas R7FS124772A01CLM#AC0

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 2.0A/B, 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, this page delivers verified specifications, LGA-36 package mapping, safety-critical timing features (CAC, IWDT, SRAM parity), and real-world use context for embedded firmware development and BOM selection.

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 clock system integrates six independent oscillators - MOSC (1–20 MHz), SOSC (32.768 kHz), HOCO (24–64 MHz), MOCO (8 MHz), LOCO (32.768 kHz), and IWDT-OCO (15 kHz) - with software-trimmable HOCO/MOCO/LOCO and CAC-based frequency accuracy monitoring.

Peripheral interconnect uses Event Link Controller (ELC) to route 120+ event sources directly between modules (e.g., ADC trigger → GPT start → DTC transfer), bypassing CPU intervention. Safety logic includes SRAM parity checking, register write protection, Flash area protection, and dual watchdogs (WDT + IWDT), enabling IEC 61508 SIL2-capable designs in industrial automation.

Key Specifications

Pinout & Package

Package: 36-pin LGA (PWLG0036KA-A), 4 mm × 4 mm, 0.5 mm pitch, exposed die pad (recommended connection to VSS). Operating temperature range: –40°C to +85°C.

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 compact LGA packaging and lower system BOM cost; versus R7FS124762A01CLM, it adds CAN, 2 extra GPT16 timers, and doubles flash capacity - making it optimal for space-constrained, connected edge nodes.

Availability

R7FS124772A01CLM is available at Aetrix Electronics and suitable for industrial HMI panels, smart sensor nodes, BLDC motor control modules, and USB-CDC industrial gateways requiring stable component supply across long production lifecycles.

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 is a global semiconductor leader specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and IoT markets.

The R7FS124772A01CLM belongs to the Synergy S124 microcontroller group - designed for ultra-low-power, safety-aware, and human-machine interface applications requiring integrated touch, analog, USB, and CAN in compact packages.

FAQ

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

The R7FS124772A01CLM features an Arm Cortex-M0+ core based on the Armv6-M architecture, with a maximum operating 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 commonly 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 LDO regulator, supporting device-only operation and full compliance with USB Battery Charging Specification 1.2. It detects DCP, CDP, and SDP port types and provides 3.3-V internal power for the transceiver when VCC_USB is supplied at 5 V. This eliminates the need for external USB PHY or charger ICs in applications such as industrial USB-CDC adapters or portable diagnostic tools using the R7FS124772A01CLM.

What analog peripherals are included in the R7FS124772A01CLM and how are they configured?

The R7FS124772A01CLM includes a 14-bit successive approximation ADC14 (18 input channels, selectable 12-/14-bit resolution), a 12-bit DAC12 with output amplifier, two low-power analog comparators (ACMPLP), and an on-die temperature sensor (TSN). These are fully configurable via dedicated registers and can be triggered by hardware events (e.g., GPT overflow or AGT match) using the ELC. The ADC supports internal reference selection and simultaneous sampling - critical for high-fidelity sensor acquisition in applications relying on the R7FS124772A01CLM's analog capabilities.

How does the R7FS124772A01CLM implement functional safety features for industrial use?

The R7FS124772A01CLM incorporates multiple hardware safety mechanisms: SRAM parity error detection and reset, Flash area protection, register write protection, Clock Frequency Accuracy Measurement (CAC), Independent Watchdog Timer (IWDT) with dedicated oscillator, and GPIO readback level detection. These features collectively support failure detection and recovery in accordance with IEC 61508 SIL2 requirements. When implemented correctly in firmware and system design, the R7FS124772A01CLM enables robust, certified operation in safety-critical industrial control and monitoring systems.

What is the package type and pin count of the R7FS124772A01CLM, and what are its key layout considerations?

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. Key layout considerations include placing 0.1-µF ceramic capacitors close to each VCC/VCL pin, connecting the exposed pad to VSS with multiple thermal vias, and routing USB_DP/USB_DM differentially with controlled impedance (90 Ω) and minimal stub length. This compact LGA footprint makes the R7FS124772A01CLM ideal for space-constrained PCBs where the full feature set must be retained without increasing board area.