Renesas R7FA2E2A32DNJ#HA0

Overview

R7FA2E2A32DNJ#HA0 from Renesas Electronics is an ultra-low-power 32-bit Arm® Cortex®-M23 microcontroller operating at up to 48 MHz, featuring 16 KB code flash, 8 KB SRAM, 12-bit ADC with 4 input channels, integrated CAN interface, and hardware AES-128/256 encryption - deployed in battery-powered industrial sensors and smart metering endpoints requiring secure, long-life operation.

For engineers reviewing the R7FA2E2A32DNJ#HA0 datasheet, R7FA2E2A32DNJ#HA0 pinout, R7FA2E2A32DNJ#HA0 application, or R7FA2E2A32DNJ#HA0 equivalent, this page delivers verified specifications, validated 20-pin HWQFN package mapping, confirmed I3C/SPI/SCI/CAN connectivity, real-world use cases for low-power sensing and secure control, and two technically documented alternative parts with explicit functional and packaging differences.

Technical Context

The R7FA2E2A32DNJ#HA0 implements an Armv8-M architecture Cortex-M23 core with Memory Protection Unit (MPU) supporting 8 regions, debug via SW-DP, and deterministic interrupt handling through NVIC and ICU. It integrates a dedicated Event Link Controller (ELC) enabling peripheral-to-peripheral event chaining without CPU intervention.

Its analog subsystem includes a 12-bit ADC with four selectable input channels (AN005, AN006, AN009, AN010), on-die temperature sensor (TSN), and low-power analog comparators (ACMPLP0/1). Power management supports multiple low-power modes with LVD monitoring across three voltage thresholds (LVD0–LVD2) and independent watchdog timer (IWDT) driven by a dedicated 15 kHz oscillator.

Key Specifications

Pinout & Package

Package: 20-pin HWQFN (4 mm × 4 mm, 0.5 mm pitch), exposed die pad recommended connected to VSS or left open. Pin count and layout match Renesas package code "NJ" per part numbering scheme (Figure 1.4, R01DS0387EJ0150).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with R7FA2E2A32DNJ#HA0, the R7FA2E2A32DNK#HA0 offers expanded I/O without sacrificing any core features, while the R7FA2E1A32DNJ#HA0 reduces BOM cost at the expense of CAN connectivity and hardware-accelerated security - making it unsuitable for industrial or utility-grade deployments requiring bus-level diagnostics or certified encryption.

Availability

R7FA2E2A32DNJ#HA0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meters, and medical wearables requiring stable component supply, extended temperature support (–40°C to +85°C), and long-term lifecycle assurance.

Supply support for R7FA2E2A32DNJ#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 specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and enterprise applications.

The RA2E2 Group is designed for ultra-low-power, cost-optimized embedded systems demanding security, analog integration, and flexible connectivity - targeting battery-powered edge devices and resource-constrained industrial controllers.

FAQ

What is the maximum operating frequency and core architecture of the R7FA2E2A32DNJ#HA0?

The R7FA2E2A32DNJ#HA0 features an Arm Cortex-M23 core compliant with the Armv8-M architecture and operates at a maximum frequency of 48 MHz. This core includes a Memory Protection Unit (MPU) with eight configurable regions, single-cycle integer multiply, and 19-cycle integer divide - delivering deterministic real-time performance with hardware-enforced memory isolation. The R7FA2E2A32DNJ#HA0 achieves this speed across its full operating voltage range (1.6–5.5 V) and temperature grade (–40°C to +85°C).

Does the R7FA2E2A32DNJ#HA0 support CAN communication, and what version is implemented?

Yes, the R7FA2E2A32DNJ#HA0 integrates a CAN module compliant with ISO 11898-1:2015 (CAN 2.0B), supporting both standard (11-bit) and extended (29-bit) identifier frames at bit rates up to 1 Mbps. It includes dedicated message RAM, transmit/receive FIFOs, and error counters - enabling robust fieldbus communication in industrial automation and building management systems. The R7FA2E2A32DNJ#HA0 does not support CAN FD.

How many analog input channels does the 12-bit ADC support on the R7FA2E2A32DNJ#HA0?

The R7FA2E2A32DNJ#HA0's 12-bit successive approximation ADC (ADC12) supports four analog input channels: AN005, AN006, AN009, and AN010. These are mapped to physical pins P010, P011, P014, and P015 respectively. The ADC also accepts internal sources including the on-die temperature sensor (TSN) and internal reference voltage - all accessible without external components. The R7FA2E2A32DNJ#HA0 does not support more than four external analog inputs.

What package type and pin count does the R7FA2E2A32DNJ#HA0 use?

The R7FA2E2A32DNJ#HA0 uses a 20-pin HWQFN package (4 mm × 4 mm, 0.5 mm pitch), identified by package code "NJ" in the Renesas part numbering scheme. It includes an exposed die pad recommended to be connected to VSS or left floating. This package provides 15 GPIOs with 5-V tolerance on pins P400 and P401, matching the thermal and board-space constraints of compact industrial modules. The R7FA2E2A32DNJ#HA0 is not available in WLCSP or 24-pin variants.

Does the R7FA2E2A32DNJ#HA0 include hardware cryptographic acceleration?

Yes, the R7FA2E2A32DNJ#HA0 includes dedicated hardware blocks for AES-128 and AES-256 encryption/decryption, plus a True Random Number Generator (TRNG) compliant with NIST SP 800-90B. These accelerators operate independently of the CPU, enabling secure key exchange, firmware signature verification, and encrypted sensor data transmission without degrading real-time performance. The R7FA2E2A32DNJ#HA0 does not support SHA or ECC in hardware.