Item specifics
Description
R7FA2E2A72DNK#AA0 Product Overview
The R7FA2E2A72DNK#AA0 is a RA2E2 series 32-bit microcontroller from Renesas Electronics, featuring an Arm® Cortex®-M23 core running at up to 48MHz in an HWQFN-24 (4×4mm) ultra-compact package. It integrates 64KB code flash, 8KB SRAM, and 2KB data flash, along with a 12-bit A/D converter, temperature sensor, and security & encryption features. Based on the Armv8-M architecture with Arm TrustZone support, the R7FA2E2A72DNK#AA0 operates from 1.6V to 5.5V with a temperature range of -40℃ to +85℃. As an entry-line member of the RA Family, it is optimized for battery-powered IoT sensor nodes, industrial control, consumer electronics, and security systems.
R7FA2E2A72DNK#AA0 Key Features
Arm Cortex-M23 High-Performance Core: Features an Arm® Cortex®-M23 32-bit processor based on the Armv8-M architecture, running at up to 48MHz. Integrated Arm Memory Protection Unit (MPU) (8 regions), with DWT, FPB, CoreSight MTB-M23 debug and trace, and SW-DP debug port.
Large Memory Configuration: 64KB code flash for medium-complexity applications. 8KB SRAM and 2KB data flash (100,000 P/E cycles) that can be read/written independently while the CPU runs. 128-bit unique ID for device identification.
Ultra-Low Power & Wide Voltage: Supports 1.6V to 5.5V ultra-wide operating voltage, directly interfacing with 5V systems. Integrated low power modes, Event Link Controller (ELC) , Data Transfer Controller (DTC) , Key Interrupt Function (KINT) , and Power-on Reset (POR) .
Rich Peripherals: 20 I/O ports. Communication interfaces include SCI × 2 (asynchronous, 8-bit clock synchronous, Simple IIC, Simple SPI, smart card), SPI × 1, and I²C × 1. Analog peripherals include 12-bit A/D Converter (ADC12) and Temperature Sensor (TSN) . Timers include 6-channel 16-bit General PWM Timer (GPT16) , 2-channel Low Power Asynchronous General Purpose Timer (AGTW) , and Watchdog Timer (WDT) .
Comprehensive Safety & Security Features: Integrated AES128/256 hardware encryption and True Random Number Generator (TRNG) . Safety features include SRAM parity error check, flash area protection, ADC self-diagnosis, Clock frequency Accuracy Measurement Circuit (CAC) , CRC calculator, Data Operation Circuit (DOC) , Port Output Enable for GPT (POEG) , Independent Watchdog Timer (IWDT) , GPIO readback level detection, register write protection, and illegal memory access detection.
HWQFN-24 Ultra-Small Package: HWQFN-24 (4×4mm × 0.8mm, 0.5mm pitch) package with MSL rating 3 (168 hours) .
R7FA2E2A72DNK#AA0 Applications
The R7FA2E2A72DNK#AA0 is widely used in:
Battery-Powered IoT Sensor Nodes: Environmental sensors, wireless sensor nodes, smart agriculture sensors
Industrial Control & Automation: PLC expansion modules, industrial sensors, motor control
Consumer Electronics: Smart home devices, wearables, remote controls, portable audio devices
Security & Encryption Applications: Security devices requiring hardware encryption and TRNG
Metering: Smart electricity meters, water meters, gas meters
Office Equipment: Printers, scanners, multifunction peripherals
Building Automation: Security systems, access control, lighting control
R7FA2E2A72DNK#AA0 Advantages and Highlights
Armv8-M Architecture with TrustZone Security: Based on Armv8-M architecture with native Arm TrustZone support, enabling hardware-level system isolation. Combined with AES128/256 and TRNG, it provides end-to-end security for IoT devices.
Ultra-Low Power for Battery-Powered Devices: Supports 1.6V to 5.5V ultra-wide operating voltage with multiple low-power modes, ideal for battery-powered portable devices and long-standby IoT nodes.
Entry-Line RA Family, Cost and Performance Combined: As an entry-line RA Family MCU, it delivers 48MHz Cortex-M23 performance, 64KB Flash, and rich peripheral integration at a highly competitive cost.
4×4mm Ultra-Small Package: HWQFN-24 (4×4mm) package measuring just 4mm × 4mm × 0.8mm, ideal for space-constrained applications.
Comprehensive Safety Features: Integrated SRAM parity check, flash area protection, ADC self-diagnosis, CRC calculator, independent watchdog timer, register write protection, and illegal memory access detection.
Complete FSP Development Ecosystem: Renesas provides the Flexible Software Package (FSP) built on FreeRTOS with HAL drivers, middleware, and examples. Supports e² studio IDE and the EK-RA2E2 evaluation kit.
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FAQs:
Question: What is the R7FA2E2A72DNK#AA0?
Answer: It is a 32-bit microcontroller from Renesas' RA2E2 series, based on the Arm Cortex-M23 core and housed in an ultra-small HWQFN-24 package, designed for ultra-low power and cost-sensitive IoT applications.
Question: What is the core processor and operating frequency?
Answer: It features a 32-bit Arm Cortex-M23 core operating at up to 48 MHz.
Question: What is the memory capacity?
Answer: It includes 64 KB code flash, 8 KB SRAM, and 2 KB data flash (EEPROM) with 100,000 erase/write cycles.
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 +85°C, supporting wide-voltage applications.
Question: What package and dimensions does it use?
Answer: It uses an HWQFN-24 package measuring 4 x 4 x 0.8 mm with a 0.5 mm pitch, an ultra-compact form factor.
Question: How many I/O ports and peripheral interfaces are provided?
Answer: It offers 20 available I/O ports, integrating SCI (UART/SPI/Simple I2C), SPI, I2C communication interfaces, and a 12-bit 8-channel ADC.
Question: What hardware security features are available?
Answer: It supports AES128/256 hardware encryption, a true random number generator (TRNG), SRAM parity error check, flash area protection, and register write protection.
Question: What low-power design features does the chip have?
Answer: It supports multiple low-power modes and features an Event Link Controller (ELC) and Data Transfer Controller (DTC), enabling data transfer between peripherals in low-power states.
Question: Which development tools and SDKs are supported?
Answer: It supports Renesas e² studio IDE and the Flexible Software Package (FSP), and rapid prototyping is possible with the EK-RA2E2 evaluation kit.
Question: What are the main application scenarios?
Answer: It is widely used in IoT sensor nodes, portable devices, industrial control, and battery-operated applications requiring low power, small size, and cost sensitivity.