Renesas R7S910035CBA#BC0

Overview

R7S910035CBA#BC0 from Renesas Electronics is a high-performance industrial real-time MCU featuring dual Arm® Cortex®-R4 (450 MHz) and Cortex-M3 (150 MHz) cores, 1 Mbyte on-chip extended SRAM with ECC, integrated EtherCAT slave controller (2-port), Ethernet MAC, dual CAN 2.0B interfaces, and hardware safety functions including CRC, IWDTa, and error control module (ECM). It targets deterministic motion control systems requiring sub-microsecond I/O response and functional safety compliance.

For engineers reviewing the R7S910035CBA#BC0 datasheet, R7S910035CBA#BC0 pinout, R7S910035CBA#BC0 application, or R7S910035CBA#BC0 equivalent, this page delivers verified specifications, validated package mapping to PRBG0320GB-A FBGA, confirmed dual-core timing architecture, real-time peripheral interconnect via Event Link Controller (ELC), and precise alternative part guidance for industrial automation SoC selection.

Technical Context

The R7S910035CBA#BC0 implements a tightly coupled dual-core architecture: the Cortex-R4 core operates at 450 MHz with 8 KB instruction/data caches (ECC-protected), 512 KB ATCM + 32 KB BTCM (ECC), and supports Arm v7-R with FPU for single/double-precision math; the Cortex-M3 core runs at 150 MHz with MPU and handles auxiliary real-time tasks. Both cores share access to the 1 Mbyte ECC-protected extended SRAM and are synchronized via the Event Link Controller (ELC) for low-latency peripheral triggering without CPU wake-up.

Real-time determinism is enforced through hardware-accelerated peripherals: EtherCAT slave controller (Beckhoff IP core, 2 ports), dual CAN channels (1 Mbps, ISO 11898-1), 33 timers including MTU3a (9-channel, 150 MHz clock), TPUa (12-channel, 75 MHz), and GPTa (4-channel PWM with dead-time generation), all supporting ELC-triggered operation and A/D conversion start. Safety is implemented at silicon level via register write protection, input clock oscillation detection, CLMA clock monitor, and ECM-driven internal reset/interrupt on module errors.

Key Specifications

Pinout & Package

Package: PRBG0320GB-A - 320-ball fine-pitch ball grid array (FBGA), 17 mm × 17 mm body, 0.8 mm ball pitch, RoHS-compliant, lead-free. Thermal pad exposed on underside for enhanced heat dissipation in high-power industrial applications.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar industrial real-time MCU applications.

Compared with R7S910035CBA#BC0, R7S910006CBA sacrifices EtherCAT and dual-core capability for lower BOM cost, while R7S910013CBA trades EtherCAT for encoder interface hardware - making R7S910035CBA#BC0 the only variant combining both EtherCAT slave and dual-core real-time processing in the 320-pin FBGA footprint.

Availability

R7S910035CBA#BC0 is available at Aetrix Electronics and suitable for industrial servo drives, programmable logic controllers (PLCs), robotics motion controllers, and industrial Ethernet gateways requiring stable component supply, long-term lifecycle support, and automotive-grade reliability under harsh thermal conditions.

Supply support for R7S910035CBA#BC0 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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, and power management ICs for industrial, automotive, and infrastructure markets.

The RZ/T1 Group, which includes R7S910035CBA#BC0, was designed specifically for deterministic real-time industrial automation - integrating EtherCAT, safety hardware, and dual-core processing to replace FPGA+MCU combinations in motion control SoCs.

FAQ

What is the maximum operating frequency of the R7S910035CBA#BC0?

The R7S910035CBA#BC0 operates at a maximum CPU clock frequency of 450 MHz for the Arm Cortex-R4 core and 150 MHz for the Cortex-M3 core. This is confirmed in Table 1.1 of the R01DS0228EJ0200 datasheet, where the "320-pin FBGA" row specifies 300/450/600 MHz options, and Table 1.3 confirms R7S910035CBA#BC0 is rated for 450 MHz. The actual frequency depends on power supply stability and thermal conditions within the −40°C to +125°C junction range.

Does the R7S910035CBA#BC0 include an EtherCAT slave controller?

Yes, the R7S910035CBA#BC0 includes an integrated EtherCAT slave controller (ECATC) with two ports, implemented as a Beckhoff Automation GmbH IP core. This is explicitly stated in the datasheet's "Features" section and confirmed in Table 1.2 ("Comparison of Functions") and Table 1.3 ("List of Products"), where R7S910035CBA#BC0 is marked with "EtherCAT" support under the 320-pin column. The controller supports distributed clock synchronization and complies with EtherCAT protocol specifications.

What package type does the R7S910035CBA#BC0 use?

The R7S910035CBA#BC0 uses the PRBG0320GB-A package: a 320-ball fine-pitch ball grid array measuring 17 mm × 17 mm with 0.8 mm pitch. This is documented in the "Package" section on page 8 of the R01DS0228EJ0200 datasheet and cross-referenced in Table 1.3, where R7S910035CBA#BC0 is listed under "320 pins (PRBG0320GB-A)". The package provides 209 I/O pins, 5-V tolerance on select inputs, and an exposed thermal pad for thermal management.

How much on-chip SRAM does the R7S910035CBA#BC0 have, and is it ECC-protected?

The R7S910035CBA#BC0 integrates up to 1 Mbyte of on-chip extended SRAM with full SEC-DED (single error correction/double error detection) ECC protection. This is specified in the "Memory" section of Table 1.1 (page 3), the "Features" list on page 1, and confirmed in Table 1.3 where R7S910035CBA#BC0 is marked with "1 Mbyte" under "On-Chip Extended SRAM Capacity". The ECC ensures data integrity for safety-critical motion control variables and EtherCAT process data objects.

What safety features are implemented in hardware on the R7S910035CBA#BC0?

The R7S910035CBA#BC0 implements multiple hardware safety features: register write protection to prevent accidental configuration changes, input clock oscillation stop detection, CRC calculator supporting four polynomials (including 32-bit Ethernet), independent watchdog timer (IWDTa) with LOCO-derived clock, and an error control module (ECM) that generates pin signals, interrupts, or internal resets upon detected faults. These are detailed in the "Safety functions" section (page 1) and Table 1.1 (page 8) of the datasheet, meeting foundational requirements for IEC 61508 SIL2 compliance.