R7FA2E1A73CFL#AA0

Product Overview

The R7FA2E1A73CFL#AA0 from Renesas Electronics Corporation is a 32-bit microcontroller built around an ARM Cortex-M23 core and specified for operation at 48 MHz. It provides 64KB (64K x 8) FLASH program memory, 16K x 8 RAM, and 4K x 8 EEPROM within a 48-LFQFP (7x7) surface-mount package. The device offers 37 I/O and supports I2C, SmartCard, SPI, and UART/USART communication. Analog input is provided by a 13 x 12-bit SAR A/D converter, while the supply voltage range is 1.6V to 5.5V and the operating temperature range is -40°C to 105°C (TA). Oscillator options include external and internal sources, and the part includes peripherals such as AES, capacitive touch, DMA, LVD, POR, PWM, temperature sensing, TRNG, and WDT.

Key Features

• ARM Cortex-M23 32-bit core with 48 MHz speed
• 64KB (64K x 8) FLASH program memory, 16K x 8 RAM, and 4K x 8 EEPROM
• 37 I/O with I2C, SmartCard, SPI, and UART/USART connectivity
• 13 x 12-bit SAR A/D converter for analog measurement
• AES, TRNG, capacitive touch, DMA, LVD, POR, PWM, temperature sensor, and WDT peripherals
• 1.6V to 5.5V supply range and -40°C to 105°C (TA) operating temperature
• 48-LFQFP (7x7) surface-mount package with external or internal oscillator

Applications

• Embedded control systems that use digital I/O, serial communication, and capacitive touch inputs
• Analog sensing subsystems that require 12-bit SAR A/D conversion and temperature measurement
• Data handling functions that use AES and true random number generation
• SmartCard interface systems that use SmartCard connectivity
• PWM-based control paths that can use DMA-assisted data movement and watchdog supervision

Design & Procurement Notes

When selecting this microcontroller, verify that the 48-LFQFP (7x7) surface-mount footprint and 37 I/O count match the board layout and external interface requirements. The 64KB FLASH, 16K x 8 RAM, and 4K x 8 EEPROM sizes define the available program, runtime, and nonvolatile storage budget. The 1.6V to 5.5V supply range and -40°C to 105°C (TA) temperature range should be checked against the system power rails and ambient operating conditions. Designers should also confirm that the I2C, SmartCard, SPI, UART/USART interfaces, 13 x 12-bit SAR A/D converter, and available peripherals such as AES, TRNG, capacitive touch, DMA, LVD, POR, PWM, temperature sensing, and WDT are required by the application. The external and internal oscillator options provide flexibility for clocking, while the ARM Cortex-M23 core and 48 MHz speed set the processing foundation.