Renesas R7FA4M1AB3CFM#AA0 RA4M1 32-Bit Microcontroller ARM Cortex-M4F 48MHz 256KB Flash LQFP-64

R7FA4M1AB3CFM#AA0 Product Overview

The R7FA4M1AB3CFM#AA0 is a RA4M1 series 32-bit microcontroller from Renesas Electronics, featuring an Arm® Cortex®-M4F core running at up to 48MHz in a LQFP-64 (10×10mm) package. It integrates 256KB code flash, 32KB SRAM, and 8KB data flash, along with a Segment LCD Controller, Capacitive Touch Sensing Unit, 14-bit A/D converter, 12-bit D/A converter, USB 2.0 Full Speed module, and CAN 2.0B interface. The R7FA4M1AB3CFM#AA0 supports a 1.6V to 5.5V wide operating voltage range and -40℃ to +105℃ industrial temperature range, and serves as the core MCU for the Arduino UNO R4 WiFi and Arduino UNO R4 Minima development boards. Built on an efficient low-power process and supported by the Flexible Software Package (FSP) , it is ideal for HMI, industrial control, consumer electronics, safety systems, and building automation.

R7FA4M1AB3CFM#AA0 Key Features

Arm Cortex-M4F High-Performance Core: Features an Arm® Cortex®-M4F processor running at up to 48MHz with a Floating-Point Unit (FPU), efficiently executing complex control algorithms and DSP tasks. Manufactured on Renesas' efficient low-power process for balanced performance and power consumption.

Large Memory Configuration: 256KB code flash for medium-complexity applications. 32KB SRAM and 8KB data flash that can be read/written independently while the CPU runs, functioning like EEPROM for frequent data logging.

Rich HMI Peripherals: Integrated Segment LCD Controller for direct segment LCD driving without external driver ICs. Equipped with a Capacitive Touch Sensing Unit supporting up to 24 channels for HMI and touch panel applications.

High-Precision Analog & Rich Communication Interfaces: Integrated 18-channel 14-bit A/D converter (SAR type) and 12-bit D/A converter. Communication interfaces include CAN 2.0B, SCI (UART/Simple SPI/Simple I2C), SPI, I2C, and USB 2.0 Full Speed.

Wide Voltage & Industrial Temperature: Supports 1.6V to 5.5V ultra-wide operating voltage, directly interfacing with 5V systems without level shifters. Operating temperature range of -40℃ to +105℃ for industrial applications.

Flexible Software Package (FSP) Support: Renesas provides the Flexible Software Package (FSP) built on FreeRTOS, with HAL drivers, middleware, and examples. Supports e² studio, Keil MDK, and IAR EWARM IDEs.

R7FA4M1AB3CFM#AA0 Applications

HMI: Segment/character LCD control panels, capacitive touch panels, industrial touchscreens

Industrial Control & Automation: PLC expansion modules, industrial sensors, motor control

Consumer Electronics: Smart home devices, appliance control panels, wearables

Safety & Fire Systems: Security alarms, fire alarm controllers, access control

Building Automation: Lighting control, HVAC control, energy management

Office Equipment: Printers, scanners, multifunction peripherals

Metering: Smart electricity meters, water meters, gas meters

R7FA4M1AB3CFM#AA0 Advantages

Arduino UNO R4 Core Chip with Rich Ecosystem: The R7FA4M1AB3CFM#AA0 is the core MCU of the Arduino UNO R4 WiFi and Arduino UNO R4 Minima. Developers can use Arduino IDE with access to the world's largest developer community and vast open-source resources.

Segment LCD Controller + Capacitive Touch Unit for HMI: Integrated Segment LCD Controller and 24-channel Capacitive Touch Sensing Unit — one chip drives both segment LCD and capacitive touch, significantly reducing BOM cost and PCB area for HMI applications.

14-Bit High-Precision ADC for Precision Measurement: Integrated 18-channel 14-bit A/D converter (SAR type), offering higher resolution than common 12-bit ADCs for industrial sensors, metering, and medical instruments.

Wide Voltage Range, 5V Compatible: Supports 1.6V to 5.5V ultra-wide operating voltage, directly interfacing with 5V systems. Operation down to 1.6V ensures stable operation as battery voltage drops.

Industrial-Grade Temperature: Operating temperature range of -40℃ to +105℃ for factory automation, outdoor equipment, and automotive electronics.

Complete FSP Development Ecosystem: Renesas provides the Flexible Software Package (FSP) with HAL drivers, FreeRTOS, middleware, and examples. Supports e² studio, Keil MDK, and IAR EWARM, with the EK-RA4M1 evaluation kit.

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FAQs:

1. Question: What is the R7FA4M1AB3CFM#AA0?
   Answer: It is a 32-bit microcontroller from Renesas' RA4M1 series, based on the Arm Cortex-M4F core and integrating a segment LCD controller and capacitive touch sensing unit in an LQFP-64 package, designed for intensive HMI applications.

2. Question: What is the core processor and operating frequency?
   Answer: It features an Arm Cortex-M4F core with a built-in floating point unit (FPU), operating at up to 48 MHz.

3. Question: What is the memory capacity?
   Answer: It includes 256 KB code flash, 32 KB SRAM, and 8 KB data flash (EEPROM).

4. Question: What are the operating voltage and temperature ranges?
   Answer: The supply voltage range is 1.6 V to 5.5 V, and the operating temperature range is -40°C to +105°C, supporting wide-voltage and industrial-grade applications.

5. Question: What analog peripherals are available?
   Answer: It integrates a 14-bit 18-channel A/D converter, 1×8-bit and 2×12-bit D/A converters, 2 analog comparators, and 3 operational amplifiers.

6. Question: What communication interfaces are supported?
   Answer: It supports CAN, I2C, SPI, SCI (UART/USART), and a USB 2.0 full-speed module, meeting various peripheral connection requirements.

7. Question: What are the features of the LCD controller and capacitive touch function?
   Answer: The segment LCD controller supports up to 38seg×4com or 34seg×8com, and the Capacitive Touch Sensing Unit (CTSU) supports 24 channels, making it ideal for HMI applications requiring numerous touch keys and segment displays.

8. Question: What hardware security features are available?
   Answer: It supports AES128/256 hardware encryption, secure boot, firmware encryption, and key storage to ensure application data and system security.

9. Question: Which development tools and SDKs are supported?
   Answer: It supports Renesas e² studio IDE and the Flexible Software Package (FSP), with GCC or LLVM toolchains, and rapid prototyping via the EK-RA4M1 evaluation kit.

10. Question: What are the main application scenarios?
    Answer: It is widely used in HMI with segment LCD displays, security systems (fire detection, burglar detection, panel control), industrial control (door openers, panel control), HVAC (heating, air conditioning, boiler control), and home appliances.