Renesas R7FA0E1073CNH#AA0

Overview

R7FA0E1073CNH#AA0 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 functions including SRAM parity check, CRC, and Independent Watchdog Timer (IWDT). It targets cost-sensitive industrial sensor nodes and battery-powered IoT edge devices requiring functional safety compliance.

For engineers reviewing the R7FA0E1073CNH#AA0 datasheet, R7FA0E1073CNH#AA0 pinout, R7FA0E1073CNH#AA0 application, or R7FA0E1073CNH#AA0 equivalent, this page delivers verified technical context, package-specific pin mapping, real-world use cases, and validated alternative options - all grounded in the official R01DS0427EJ0120 Rev.1.20 datasheet and Renesas product documentation.

Technical Context

The R7FA0E1073CNH#AA0 implements the Armv8-M architecture with TrustZone®-enabled security extensions and supports full debug via SW-DP with CoreSight™ MTB-M23 trace. Its system-level timing relies on multiple clock sources: HOCO (24/32 MHz), MOCO (4 MHz), LOCO (32.768 kHz), and external crystal support via X1/X2 pins.

Peripheral integration includes a Serial Array Unit (SAU) supporting three simplified SPI, three simplified I²C, and two UART interfaces - plus one dedicated UARTA with LIN-bus capability, one IICA, eight 16-bit TAU timers, and a configurable 32-bit interval timer (TML32) with flexible counter mode combinations.

Key Specifications

Pinout & Package

Package: 32-pin HWQFN (PWQN0032KE-A), 5 mm × 5 mm, 0.5 mm pitch, 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#AA0, the LQFP variant offers easier rework and higher thermal mass, while the 32-KB variant trades flash capacity for lower unit cost - both retain identical safety architecture and peripheral compatibility for seamless migration.

Availability

R7FA0E1073CNH#AA0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart metering endpoints, and medical wearable monitors requiring stable component supply across multi-year production cycles.

Supply support for R7FA0E1073CNH#AA0 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.

The RA0E1 Group - including R7FA0E1073CNH#AA0 - is engineered for ultra-low-power, safety-aware embedded applications where cost, size, and functional safety certification (IEC 61508, ISO 13849) are primary design constraints.

FAQ

What is the maximum operating frequency of the R7FA0E1073CNH#AA0?

The R7FA0E1073CNH#AA0 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 full functionality - including ADC sampling, timer operations, and communication interfaces - at this clock rate, as confirmed in Section 1.1 and Table 1.12 of the R01DS0427EJ0120 datasheet.

Does the R7FA0E1073CNH#AA0 support LIN bus communication?

Yes, the R7FA0E1073CNH#AA0 supports LIN bus communication through its dedicated UARTA peripheral, which includes native LIN-bus protocol support. Additionally, the Serial Array Unit (SAU) can emulate LIN transceivers using UART mode. This dual-path capability is explicitly documented in Table 1.7 and Table 1.12 of the R01DS0427EJ0120 datasheet for the R7FA0E1073CNH#AA0 variant.

How many analog input channels does the R7FA0E1073CNH#AA0 ADC support?

The R7FA0E1073CNH#AA0 integrates a 12-bit ADC12 with 10 selectable analog input channels: AN000 through AN007, plus AN021 and AN022. These are physically mapped to specific pins (e.g., P010–P015, P212–P215) as shown in Table 1.13 and Table 1.14 of the R01DS0427EJ0120 datasheet, and include routing for the internal temperature sensor output.

What safety features are implemented in the R7FA0E1073CNH#AA0?

The R7FA0E1073CNH#AA0 includes SRAM parity error checking, flash area protection, ADC self-diagnosis, Cyclic Redundancy Check (CRC), Independent Watchdog Timer (IWDT), GPIO readback level detection, register write protection, and illegal memory access detection. All are detailed in Section 1.1 and Table 1.3 of the R01DS0427EJ0120 datasheet and align with IEC 61508 SIL2-readiness requirements.

What is the package type and pin count of the R7FA0E1073CNH#AA0?

The R7FA0E1073CNH#AA0 uses a 32-pin HWQFN package (code NH), designated PWQN0032KE-A, measuring 5 mm × 5 mm with 0.5 mm pitch and an exposed die pad. This is confirmed in Figure 1.2 (Part Numbering), Table 1.11 (Product List), and Figure 1.3 (Pin Assignment) of the R01DS0427EJ0120 datasheet.