Renesas R7FA2E2A53CNJ#HA0

Overview

R7FA2E2A53CNJ#HA0 from Renesas Electronics is an ultra-low-power 32-bit Arm® Cortex®-M23 microcontroller operating at up to 48 MHz, featuring 32 KB code flash, 8 KB SRAM, 12-bit ADC and DAC, integrated CAN interface, and hardware AES/256 + TRNG for secure edge sensing. It targets battery-powered industrial sensors and smart metering nodes requiring functional safety support and extended temperature operation.

For engineers reviewing the R7FA2E2A53CNJ#HA0 datasheet, R7FA2E2A53CNJ#HA0 pinout, R7FA2E2A53CNJ#HA0 application, or R7FA2E2A53CNJ#HA0 equivalent, this page delivers verified technical context, package-specific I/O mapping, safety-critical peripheral capabilities (IWDT, CAC, ECC-SRAM), and real-world substitution guidance aligned with Renesas RA2E2 family documentation Rev.1.50.

Technical Context

The R7FA2E2A53CNJ#HA0 implements an Armv8-M architecture Cortex-M23 core with Memory Protection Unit (8 regions), debug via SW-DP, and deterministic interrupt handling through NVIC and ICU. Its clock system integrates HOCO/MOCO/LOCO oscillators with trim and IWDT-dedicated 15 kHz source.

Peripheral integration includes one SCI supporting UART/IIC/SPI/Smart Card modes, one I3C bus, one SPI, CAN v2.0B, six GPT16 timers (11 PWM outputs), two AGTW low-power timers, ADC12 with 7 input channels, TSN, and security accelerators (AES128/256, TRNG). All operate across -40°C to +105°C.

Key Specifications

Pinout & Package

Package: 20-pin HWQFN (4 mm × 4 mm, 0.5 mm pitch), exposed die pad recommended connected to VSS. Pin count and I/O allocation match R7FA2E2A5xxNJ series per Renesas Part Numbering Scheme (NJ = 20-pin HWQFN).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low-power Arm Cortex-M23 microcontroller applications.

Compared with R7FA2E2A53CNJ#HA0, the CNK variant offers more I/O and ADC channels in a larger package, while the RA2E1-based AA0 variant sacrifices CAN, I3C, and crypto acceleration for lower unit cost and reduced power at lower clock speeds - selection depends strictly on interface and security requirements.

Availability

R7FA2E2A53CNJ#HA0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart utility meters, BLDC motor controllers, and secure edge gateways requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for R7FA2E2A53CNJ#HA0 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 Corporation is a global semiconductor leader delivering microcontrollers, analog, power, and SoC solutions for automotive, industrial, infrastructure, and IoT markets.

The RA2E2 group is designed for ultra-low-power, cost-sensitive embedded applications demanding functional safety, security, and rich analog/peripheral integration - targeting battery-operated and thermally constrained systems.

FAQ

What is the maximum operating frequency of the R7FA2E2A53CNJ#HA0?

The R7FA2E2A53CNJ#HA0 features an Arm Cortex-M23 core with a maximum operating frequency of 48 MHz. This is achieved using the high-speed on-chip oscillator (HOCO) at 48 MHz, which supports full peripheral operation including CAN, ADC, and PWM modules without throttling. The device maintains timing compliance across its full -40°C to +105°C operating range.

Does the R7FA2E2A53CNJ#HA0 include hardware encryption acceleration?

Yes, the R7FA2E2A53CNJ#HA0 integrates dedicated hardware accelerators for AES-128 and AES-256 encryption/decryption, plus a True Random Number Generator (TRNG). These modules operate independently of the CPU, enabling secure key generation, firmware authentication, and encrypted data transmission without impacting real-time application performance.

How many analog input channels does the ADC12 support on the R7FA2E2A53CNJ#HA0?

The R7FA2E2A53CNJ#HA0's 12-bit ADC12 supports 7 analog input channels (AN005, AN006, AN009, AN010, AN019–AN022), as confirmed in Table 1.12 of the RA2E2 datasheet Rev.1.50. This is specific to the R7FA2E2A5xxNJ package variant and excludes the 8-channel configuration found in the 24-pin CNK version.

What safety features are implemented in the R7FA2E2A53CNJ#HA0?

The R7FA2E2A53CNJ#HA0 includes multiple hardware-enforced safety mechanisms: SRAM with ECC error correction, independent watchdog timer (IWDT) with dedicated oscillator, Clock Frequency Accuracy Measurement Circuit (CAC), ADC self-diagnosis, register write protection, illegal memory access detection, and GPIO readback level verification - collectively supporting IEC 61508 SIL2 development workflows.

Is the R7FA2E2A53CNJ#HA0 pin-compatible with other RA2E2 devices?

The R7FA2E2A53CNJ#HA0 shares identical pinout and electrical characteristics with all other R7FA2E2A5xxNJ variants (e.g., R7FA2E2A52DNJ, R7FA2E2A54CNJ) in the 20-pin HWQFN package. However, it is not pin-compatible with 24-pin (CNK) or WLCSP (CBY) variants due to differing pin counts and assignments per Figure 1.4 and Table 1.14.