Infineon Technologies S6J351CHTBSC20000

Overview

S6J351CHTBSC20000 from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-R5F automotive microcontroller targeting body control units with ASIL-B compliance, CAN FD interface support, and Secure Hardware Extension (SHE). It operates at up to 132 MHz, integrates 2,112 KB TC-Flash and 128 KB TC-RAM, and supports dual power supply (3.3 V or 5 V) across -40 to 105 °C ambient.

For engineers reviewing the S6J351CHTBSC20000 datasheet, S6J351CHTBSC20000 pinout, S6J351CHTBSC20000 application, or S6J351CHTBSC20000 equivalent, key selection criteria include its TEQFP-144 package, 4-channel CAN FD controller with ECC-protected RAM buffers, SHE-based secure boot, and real-time peripheral set including 40-channel 12-bit ADC and 6-channel reload timer.

Technical Context

The S6J351CHTBSC20000 implements a lockstep-capable Arm Cortex-R5F core with MPU, TPU, and ECC on both instruction and data caches (16 KB each), enabling ISO 26262 ASIL-B compliance. Its memory subsystem includes separate TC-Flash (2,112 KB) and Work-Flash (112 KB), plus TC-RAM (128 KB) and System-RAM (128 KB with 24 KB backup area).

Peripheral integration centers on deterministic real-time operation: four independent CAN FD controllers (each with 128-message ECC RAM buffer), DDR-HSSPI interface, 12-channel multi-function serial (UART/I²C/LIN/CSIO), and safety-critical timers - including 6-channel reload timer, 16-unit base timer, and hardware watchdog with clock supervisor monitoring.

Key Specifications

Pinout & Package

Package: TEQFP-144 (0.5 mm pitch), RoHS-compliant, moisture sensitivity level 3 (MSL3), body size 20 × 20 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with RH850/F1K and S32K344, the S6J351CHTBSC20000 offers optimal balance of ASIL-B-certified real-time peripherals, integrated SHE, and compact TEQFP-144 packaging - making it uniquely suited for cost-sensitive, space-constrained body domain ECUs requiring secure CAN FD communication and deterministic timing.

Availability

S6J351CHTBSC20000 is available at Aetrix Electronics and suitable for automotive door modules, roof control units, seat control systems, and lighting control modules requiring stable component supply, long-term lifecycle support, and ASIL-B compliance.

Supply support for S6J351CHTBSC20000 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

Infineon Technologies AG is a German semiconductor manufacturer specializing in power management, automotive ICs, and security solutions, with global R&D and manufacturing infrastructure.

The S6J351CHTBSC20000 belongs to the TRAVEO™ T1G family - designed specifically for automotive body electronics requiring functional safety, secure communication, and real-time responsiveness in harsh environments.

FAQ

What is the maximum operating frequency of the Arm Cortex-R5F core in the S6J351CHTBSC20000?

The Arm Cortex-R5F core operates at up to 132 MHz under recommended conditions (VDD = 3.3 V ±0.3 V or 5.0 V ±0.5 V, TA = -40 to 105 °C). This frequency is sustained by the on-chip PLL0 with SSCG, and verified across all process corners per Infineon's AC characteristics table (Section 7.4.3 of DS 002-18647 Rev. *G).

Does the S6J351CHTBSC20000 support CAN FD with bit rate switching?

Yes - all four CAN FD controllers support flexible data-rate operation with automatic bit rate switching between nominal (≤1 Mbps) and data phase (up to 5 Mbps). Each channel includes dedicated message RAM with ECC protection and hardware timestamping, as confirmed in the peripheral function list (Section 1.1) and CAN FD register description (Section 15 of TRAVEO™ T1G Platform Hardware Manual).

How is the Secure Hardware Extension (SHE) implemented in this device?

The SHE is a hardened cryptographic module compliant with ISO 15408 EAL4+, providing AES-128 encryption/decryption, SHA-256 hashing, and secure key storage. Its fixed module ID is 0x000F_0300, and it interfaces directly with boot ROM and flash controllers to enforce secure boot and firmware authentication - details are specified in the "Secure Hardware Extension" chapter of the TRAVEO™ T1G Platform Hardware Manual.

What is the purpose of the 24 KB backup RAM area in System-RAM?

The 24 KB backup RAM consists of two physically separate blocks (16 KB + 8 KB) retained during deep-sleep and reset events. It stores critical calibration data, seat/mirror position memory, and cryptographic context - powered by VBAT or internal LDO backup rail. This design eliminates need for external EEPROM in body control applications, as documented in Section 1.1 (System-RAM specification) and Section 7.3.2 (power supply current behavior).