Renesas R7FA2E1A52DFJ#HA0 RA2E1 32-Bit Microcontroller ARM Cortex-M23 48MHz 32KB Flash LQFP-32

R7FA2E1A52DFJ#HA0 Product Overview

The R7FA2E1A52DFJ#HA0 is a RA2E1 series 32-bit microcontroller from Renesas Electronics, featuring an Arm® Cortex®-M23 core running at up to 48MHz in a LQFP-32 (7×7mm) package. It integrates 32KB code flash, 16KB SRAM, and 4KB data flash, along with a 12-bit A/D converter, an enhanced Capacitive Touch Sensing Unit (CTSU) , and security & encryption features (AES, TRNG, Unique ID). Supporting a 1.6V to 5.5V wide operating voltage range and -40℃ to +85℃ industrial temperature range, the R7FA2E1A52DFJ#HA0 is the entry-line member of the RA Family optimized for cost-sensitive and space-constrained applications, widely used in HMI, industrial control, consumer electronics, security systems, and battery-powered IoT sensor nodes.

R7FA2E1A52DFJ#HA0 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, delivering efficient instruction execution at ultra-low power.

Large Memory Configuration: 32KB code flash for medium-complexity applications. 16KB SRAM and 4KB data flash that can be read/written independently while the CPU runs.

Industry-Leading Ultra-Low Power: Manufactured on Renesas' efficient low-power process, it is an industry-leading ultra-low power MCU. Supports 1.6V to 5.5V ultra-wide operating voltage, directly interfacing with 5V systems without level shifters.

Enhanced Capacitive Touch Sensing Unit (CTSU) : Integrated enhanced CTSU supporting 10 to 30 channels for capacitive touch buttons, sliders, and wheels — ideal for HMI applications.

Rich Peripherals & Communication Interfaces: 23 I/O ports. Communication interfaces include SCI × 3 (UART, Simple SPI, Simple I2C), SPI × 1, and I²C × 1. Analog peripherals include 12-bit ADC (ADC12) and temperature sensor. Timers include 32-bit general PWM timer × 1, 16-bit general PWM timer × 6, and low power asynchronous general-purpose timer × 2. Integrated RTC, DMA, LVD, POR, PWM, and WDT.

Comprehensive Security & Encryption: Integrated AES hardware encryption, True Random Number Generator (TRNG) , and 128-bit Unique ID for IoT data security and device authentication.

LQFP-32 Compact Package: LQFP-32 (7×7mm × 1.7mm) package with MSL rating 3 (168 hours) , RoHS3 compliant, Tape & Reel packaging with 2,000 pieces per reel.

R7FA2E1A52DFJ#HA0 Applications

The R7FA2E1A52DFJ#HA0 is widely used in:

• HMI: Capacitive touch control panels, smart switches, industrial touchscreens

• Industrial Control & Automation: PLC expansion modules, industrial sensors, motor control, power monitoring systems

• Consumer Electronics: Smart home devices, wearables, remote controls

• Security & Encryption Applications: Security devices requiring hardware encryption and TRNG

• Battery-Powered IoT Sensor Nodes: Environmental sensors, wireless sensor nodes, smart agriculture sensors

• Office Equipment: Printers, scanners, multifunction peripherals

R7FA2E1A52DFJ#HA0 Advantages and Highlights

Entry-Line RA Family, Cost and Performance Combined: As an entry-line RA Family MCU, it delivers 48MHz Cortex-M23 performance, 32KB Flash, and rich peripheral integration at a highly competitive cost.

Enhanced CTSU for HMI Applications: Integrated enhanced CTSU supporting up to 30 channels of capacitive touch — one chip implements capacitive touch interaction without external touch controllers.

Wide Operating Voltage Range, 5V Compatible: Supports 1.6V to 5.5V ultra-wide operating voltage, directly interfacing with 5V systems without level shifters.

Ultra-Low Power for Battery-Powered Devices: Optimized process and Renesas low-power process technology make it an industry-leading ultra-low power MCU, ideal for battery-powered portable devices and long-standby IoT nodes.

Comprehensive Security & Encryption: Integrated AES, TRNG, and Unique ID for end-to-end security in IoT devices.

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FAQs:

1. Question: What is the R7FA2E1A52DFJ#HA0?
   Answer: It is a 32-bit microcontroller from Renesas' RA2E1 series, based on the Arm Cortex-M23 core in an LQFP-32 package, featuring ultra-low power consumption and a wide operating voltage range for cost-sensitive and space-constrained embedded applications.

2. 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, based on the Armv8-M architecture with an integrated Memory Protection Unit (MPU).

3. Question: What is the memory capacity?
   Answer: It includes 32 KB code flash, 16 KB SRAM, and 4 KB data flash (EEPROM). The data flash supports 100,000 erase/write cycles.

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 +85°C, supporting wide-voltage and industrial-grade applications.

5. Question: How is the power consumption?
   Answer: It utilizes Renesas' optimized low-power process technology, making it an industry-leading ultra-low power MCU suitable for battery-powered applications. It supports multiple low-power modes.

6. Question: How many I/O ports and peripheral interfaces are provided?
   Answer: It offers 23 available I/O ports, integrating SCI ×4 (supporting UART, simple SPI, simple I2C), standalone SPI ×1, I2C ×1, and a 12-bit 10-channel ADC.

7. Question: What package and dimensions does it use?
   Answer: It uses an LQFP-32 package measuring 7 x 7 x 1.7 mm with a 0.8 mm pitch, and a moisture sensitivity level of MSL 3.

8. Question: What hardware security features are available?
   Answer: It supports AES128/256 hardware encryption, a true random number generator (TRNG), and a 128-bit unique ID to ensure application data and system security.

9. Question: What are the main application scenarios?
   Answer: It is widely used in consumer electronics, home appliances, industrial automation, building automation, healthcare devices, portable devices, and IoT sensor nodes.

10. Question: Which development tools and SDKs are supported?
    Answer: It supports Renesas e² studio IDE and the Flexible Software Package (FSP), with rapid prototyping possible via the EK-RA2E1 evaluation kit, and supports GCC or LLVM toolchains.