Renesas R7FA0E1073CNH#HA0

Overview

R7FA0E1073CNH#HA0 from Renesas is an ultra-low-power 32-bit Arm® Cortex®-M23 microcontroller operating at up to 32 MHz, featuring 64-KB code flash, 12-KB SRAM, a 12-bit ADC with 10 input channels, and integrated safety features including SRAM parity check, CRC, and independent watchdog timer (IWDT). It targets battery-powered industrial sensors and smart metering endpoints requiring extended runtime and functional safety compliance.

For engineers reviewing the R7FA0E1073CNH#HA0 datasheet, R7FA0E1073CNH#HA0 pinout, R7FA0E1073CNH#HA0 application, or R7FA0E1073CNH#HA0 equivalent, this page delivers verified package mapping (32-pin HWQFN), confirmed pin functions (including SWDIO/SWCLK debug, SAU/UARTA/IICA interfaces, and ADC12 analog inputs), and validated alternative options for cost-optimized or footprint-constrained designs.

Technical Context

The R7FA0E1073CNH#HA0 implements Armv8-M architecture with TrustZone®-enabled security extensions and supports dual-clock domain operation via HOCO (32 MHz), LOCO (32.768 kHz), and external crystal sources. Its Event Link Controller (ELC) enables hardware-triggered peripheral chaining without CPU intervention, while the Data Transfer Controller (DTC) offloads memory transfers during interrupt servicing.

It integrates eight 16-bit Timer Array Unit (TAU) channels supporting PWM generation and capture, plus a configurable 32-bit Interval Timer (TML32) that can operate in 32-bit counter mode or be split into two 16-bit or four 8-bit timers. The Serial Array Unit (SAU) provides three simplified SPI, three simplified I²C, and two UART interfaces - one with LIN-bus support - all multiplexed across shared pins.

Key Specifications

Pinout & Package

Package: 32-pin HWQFN (5 mm × 5 mm, 0.5 mm pitch) with exposed die pad (recommended electrically open).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA0E1073CNH#HA0, the LQFP variant offers mechanical robustness and thermal margin at the expense of board area, while the 32-KB variant reduces cost and flash overhead but constrains future feature expansion and multi-sensor integration.

Availability

R7FA0E1073CNH#HA0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meters, and automotive body control modules requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for R7FA0E1073CNH#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 is a global semiconductor leader specializing in microcontrollers, analog, and power solutions for automotive, industrial, and IoT markets, with over 40 years of embedded systems expertise.

The RA0E1 Group - including R7FA0E1073CNH#HA0 - was designed specifically for cost-sensitive, ultra-low-power applications demanding functional safety, secure boot, and seamless scalability within the RA family architecture.

FAQ

What is the maximum operating frequency of the R7FA0E1073CNH#HA0?

The R7FA0E1073CNH#HA0 operates at a maximum frequency of 32 MHz using its Arm Cortex-M23 core. This speed is achievable with the high-speed on-chip oscillator (HOCO) or external crystal sources. The device maintains timing integrity across its full operating voltage range (1.6 V to 5.5 V) and temperature range (-40°C to +105°C), making R7FA0E1073CNH#HA0 suitable for real-time control tasks in resource-constrained environments.

Does the R7FA0E1073CNH#HA0 support LIN bus communication?

Yes, the R7FA0E1073CNH#HA0 supports LIN bus communication through its UARTA peripheral, which includes built-in LIN physical layer compatibility. This allows direct connection to LIN transceivers without external level-shifting circuitry. The UARTA module handles LIN frame formatting, checksum calculation, and synchronization, reducing firmware overhead. R7FA0E1073CNH#HA0 is commonly used in automotive body electronics such as door modules and seat controllers where LIN is the standard communication protocol.

How many analog input channels does the ADC12 support on the R7FA0E1073CNH#HA0?

The ADC12 module on the R7FA0E1073CNH#HA0 supports up to 10 analog input channels: AN000 through AN007, plus AN021 and AN022. These include dedicated pins for external signals as well as internal sources like the on-die temperature sensor and internal reference voltage. All channels are selectable via software configuration, and conversions can be triggered by timers, software commands, or hardware events. This capability makes R7FA0E1073CNH#HA0 ideal for multi-sensor applications such as environmental monitoring and predictive maintenance systems.

What safety features are integrated into the R7FA0E1073CNH#HA0?

The R7FA0E1073CNH#HA0 integrates multiple hardware-based safety mechanisms: SRAM parity error detection, flash area protection, ADC self-diagnosis, cyclic redundancy check (CRC) engine supporting CRC-CCITT and CRC-32, independent watchdog timer (IWDT) clocked by LOCO, GPIO readback level detection, register write protection, and illegal memory access detection. These features collectively support functional safety standards such as IEC 61508 and enable R7FA0E1073CNH#HA0 to serve as a foundational element in SIL-2–capable systems for industrial automation and building controls.

What is the package type and pin count of the R7FA0E1073CNH#HA0?

The R7FA0E1073CNH#HA0 is housed in a 32-pin HWQFN package measuring 5 mm × 5 mm with 0.5 mm pitch and an exposed die pad. This compact, thermally efficient package supports automated surface-mount assembly and provides excellent signal integrity for high-speed digital interfaces. Pin assignments match the RA0E1 group's 32-pin footprint, ensuring compatibility with existing layout templates and evaluation boards. The HWQFN form factor makes R7FA0E1073CNH#HA0 especially suitable for space-constrained applications like portable medical devices and smart home sensors.