Renesas R7FA0E1053CSC#CA0

Overview

R7FA0E1053CSC#CA0 from Renesas is an ultra-low-power 32-bit Arm® Cortex®-M23 microcontroller operating at up to 32 MHz, featuring 32-KB code flash, 12-KB SRAM, a 12-bit ADC with 5 analog 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 control modules requiring extended runtime and functional safety compliance.

For engineers reviewing the R7FA0E1053CSC#CA0 datasheet, R7FA0E1053CSC#CA0 pinout, R7FA0E1053CSC#CA0 application, or R7FA0E1053CSC#CA0 equivalent, key selection criteria include its 20-pin LSSOP package, 1.6–5.5 V wide supply range, -40°C to +105°C industrial temperature grade, LIN-capable UART, and hardware-based safety features such as register write protection and illegal memory access detection.

Technical Context

The R7FA0E1053CSC#CA0 implements the Armv8-M architecture with TrustZone®-enabled security extensions and supports dual-clock domain operation via HOCO (up to 32 MHz), LOCO (32.768 kHz), and external crystal inputs. Its system-level safety is enforced through hardware-assisted mechanisms including SRAM parity error detection, flash area protection, and ADC self-diagnosis - all independently verified without CPU intervention.

Peripheral integration centers on deterministic real-time control: the 8-channel Timer Array Unit (TAU) provides PWM outputs and capture/compare functionality, while the Event Link Controller (ELC) enables direct peripheral-to-peripheral triggering (e.g., ADC conversion start via timer overflow), reducing interrupt latency and CPU load in closed-loop applications.

Key Specifications

Pinout & Package

Package: 20-pin LSSOP (PLSP0020JB-A), 4.4 mm × 6.5 mm, 0.65 mm pitch, lead-free (Sn only).

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FA0E1053CNK, the R7FA0E1053CSC#CA0 offers easier assembly and lower cost in LSSOP form factor, while R7FA0E1073CSC provides immediate flash headroom without changing hardware - making both viable alternatives depending on mechanical and firmware growth requirements.

Availability

R7FA0E1053CSC#CA0 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart thermostat control, and programmable logic controller (PLC) I/O modules requiring stable component supply across extended product lifecycles.

Supply support for R7FA0E1053CSC#CA0 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 is designed for cost-sensitive, ultra-low-power embedded applications demanding functional safety and seamless scalability within the RA family - targeting industrial controls, home appliances, and medical devices.

FAQ

What is the maximum operating frequency of the R7FA0E1053CSC#CA0?

The R7FA0E1053CSC#CA0 operates at a maximum frequency of 32 MHz using the high-speed on-chip oscillator (HOCO) or external crystal source. This frequency is fully supported across its entire industrial temperature range (-40°C to +105°C) and supply voltage range (1.6 V to 5.5 V), enabling deterministic real-time performance in demanding control applications without thermal derating.

Does the R7FA0E1053CSC#CA0 support LIN bus communication?

Yes, the R7FA0E1053CSC#CA0 supports LIN bus communication through one dedicated UART channel (UART2) within its Serial Array Unit (SAU). This channel is explicitly documented as LIN-bus capable in the datasheet, providing hardware-level support for LIN 2.2A protocol timing and frame formatting without requiring bit-banging or external transceivers.

How many analog input channels does the R7FA0E1053CSC#CA0 ADC support?

The R7FA0E1053CSC#CA0 integrates a 12-bit successive approximation ADC (ADC12) with five usable analog input channels: AN000, AN001, AN002, AN003, and AN021–AN022 (two additional pins sharing one channel identifier). This matches the device variant's specification in Table 1.12 of the datasheet, confirming five distinct analog inputs for sensor interfacing.

What safety features are implemented in hardware on the R7FA0E1053CSC#CA0?

The R7FA0E1053CSC#CA0 implements multiple hardware-enforced safety features: SRAM parity error detection, flash area protection, independent watchdog timer (IWDT) with LOCO clock source, cyclic redundancy check (CRC) engine, illegal memory access detection, and register write protection via the Protect Register (PRCR). These are confirmed in Sections 1.3 and Table 1.3 of the R01DS0427EJ0120 datasheet.

Is the R7FA0E1053CSC#CA0 pin-compatible with other RA0E1 group members?

The R7FA0E1053CSC#CA0 shares the same 20-pin LSSOP package (PLSP0020JB-A) and pin assignment with other RA0E1 variants in that package, including R7FA0E1073CSC. Pin compatibility is confirmed in Figure 1.5 and Table 1.14 of the datasheet, enabling direct substitution where flash size differences do not impact firmware execution.