Renesas R7FA2E1A93CFM#BA0

Overview

R7FA2E1A93CFM#BA0 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, integrated temperature sensor, and safety features including SRAM parity check, CRC, and independent watchdog timer. It targets battery-powered industrial sensors and smart metering endpoints requiring extended runtime and functional safety compliance.

For engineers reviewing the R7FA2E1A93CFM#BA0 datasheet, R7FA2E1A93CFM#BA0 pinout, R7FA2E1A93CFM#BA0 application, or R7FA2E1A93CFM#BA0 equivalent, key selection criteria include its 32-pin LQFP package, 1.6–5.5 V wide supply range, -40°C to +105°C industrial temperature grade, and support for LIN-bus UART, SAU-based SPI/I²C/UART, and hardware-accelerated cryptographic primitives via TRNG.

Technical Context

The R7FA2E1A93CFM#BA0 implements the Armv8-M architecture with TrustZone®-enabled security extensions and executes instructions in single-cycle integer multiply and 19-cycle integer divide. Its system-level timing relies on multiple clock sources-including HOCO (32 MHz), SOSC (32.768 kHz), and LOCO-with programmable trimming and clock output capability.

Peripheral integration centers on event-driven operation: the Event Link Controller (ELC) enables direct peripheral-to-peripheral triggering without CPU intervention, while the Data Transfer Controller (DTC) handles memory-mapped transfers upon interrupt request. Safety-critical functions like ADC self-diagnosis, register write protection (PRCR), and illegal memory access detection are implemented in hardware.

Key Specifications

Pinout & Package

Package: 32-pin LQFP (7 mm × 7 mm, 0.8 mm pitch), RoHS-compliant Sn finish, exposed die pad not present in LQFP variant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA2E1A93CFJ#AA0, the R7FA2E1A93CFM#BA0 offers identical electrical and functional behavior with enhanced moisture sensitivity handling; versus R7FA4M1AB3CFM#BA0, it trades raw compute for lower power, integrated LIN, and on-die thermal sensing-making it superior for cost-constrained, battery-operated, and safety-aware deployments.

Availability

R7FA2E1A93CFM#BA0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meters, and automotive body control modules requiring stable component supply across extended product lifecycles.

Supply support for R7FA2E1A93CFM#BA0 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 automotive, industrial, and IoT markets.

The RA0E1 group, including R7FA2E1A93CFM#BA0, was designed specifically for cost-sensitive, ultra-low-power applications demanding functional safety and secure boot-targeting battery-powered industrial and consumer edge devices.

FAQ

What is the maximum operating frequency and core architecture of the R7FA2E1A93CFM#BA0?

The R7FA2E1A93CFM#BA0 features an Arm Cortex-M23 core compliant with the Armv8-M architecture and operates at a maximum frequency of 32 MHz. It includes single-cycle integer multiply and 19-cycle integer divide units, along with debug support via SW-DP and CoreSight MTB-M23. This architecture delivers efficient real-time processing while maintaining low power consumption essential for the R7FA2E1A93CFM#BA0's target applications.

Does the R7FA2E1A93CFM#BA0 support LIN bus communication, and which peripheral handles it?

Yes, the R7FA2E1A93CFM#BA0 supports LIN bus communication through its Serial Array Unit (SAU), specifically one UART channel within SAU configured for LIN 2.2A protocol. The SAU provides three UART instances, and one is explicitly designated for LIN-bus operation-enabling direct connection to LIN transceivers without external protocol translation. This capability is confirmed in the R7FA2E1A93CFM#BA0 datasheet section 1.4 and Table 1.12.

What are the analog input capabilities of the R7FA2E1A93CFM#BA0, and how many channels does the ADC support?

The R7FA2E1A93CFM#BA0 integrates a 12-bit successive approximation ADC (ADC12) supporting up to 10 analog input channels: AN000–AN007 and AN021–AN022. It also includes an on-die temperature sensor (TSN) whose output is routed directly to the ADC for die temperature monitoring. The ADC supports internal reference voltage selection and simultaneous sampling with hardware trigger sources such as TAU or ELC events-key features documented in Tables 1.8 and 1.14 of the R7FA2E1A93CFM#BA0 datasheet.

Which safety and security features are hardware-implemented in the R7FA2E1A93CFM#BA0?

The R7FA2E1A93CFM#BA0 implements hardware-based safety and security features including SRAM parity error checking, Flash Read Protection (FRP), Cyclic Redundancy Check (CRC-32/CCITT), Independent Watchdog Timer (IWDT), Low Voltage Detection (LVD0/LVD1), register write protection (PRCR), and illegal memory access detection. Additionally, it includes a True Random Number Generator (TRNG) for cryptographic key generation. These features are specified in Section 1.1 and Table 1.3 of the R7FA2E1A93CFM#BA0 datasheet and align with IEC 61508 SIL2 readiness.

What package type and pin count does the R7FA2E1A93CFM#BA0 use, and what are its key mechanical dimensions?

The R7FA2E1A93CFM#BA0 uses a 32-pin LQFP package (PLQP0032GB-A) with 7 mm × 7 mm body size and 0.8 mm lead pitch. It is Pb-free with Sn-only terminal finish and rated for industrial temperature range (-40°C to +105°C). The package includes standard power/ground pins, SWD debug interface, crystal oscillator connections (X1/X2/XCIN/XCOUT), and 26 general-purpose I/O pins-details confirmed in Figure 1.3 and Table 1.11 of the R7FA2E1A93CFM#BA0 datasheet.