Infineon Technologies S6J351CJTBSE20000

Overview

S6J351CJTBSE20000 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 S6J351CJTBSE20000 datasheet, S6J351CJTBSE20000 pinout, S6J351CJTBSE20000 application, or S6J351CJTBSE20000 equivalent, key selection criteria include its TEQFP-144 package, 4-channel CAN FD controller with ECC-protected RAM buffers, 12-bit 40-channel ADC, and integrated safety mechanisms (MPU, TPU, ECC, watchdog).

Technical Context

The S6J351CJTBSE20000 implements a lockstep-capable Arm Cortex-R5F core with dual 16 KB I/D caches, running at 132 MHz with 80-MHz flash access speed. Its memory subsystem includes 2,112 KB TC-Flash, 112 KB Work-Flash, and 256 KB total RAM (128 KB TC-RAM + 128 KB System-RAM including 24 KB backup area).

It features four independent CAN FD controllers-each backed by 16 KB ECC-protected RAM-and integrates a full peripheral suite: 12-channel multi-function serial interface (UART/I²C/LIN/CSIO), DDR-HSSPI, 12-bit 40-channel ADC, real-time clock with automatic calibration, and hardware security via SHE module with fixed CEER configuration.

Key Specifications

Pinout & Package

Package: TEQFP-144 (0.5 mm pitch), RoHS-compliant, moisture-sensitive level 3 per J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7F701686 and S32K344, the S6J351CJTBSE20000 offers optimal balance of ASIL-B-ready safety architecture, integrated SHE, and TEQFP-144 footprint-making it ideal for cost-sensitive, safety-certified body electronics where cryptographic security and CAN FD bandwidth are prioritized over raw compute throughput.

Availability

S6J351CJTBSE20000 is available at Aetrix Electronics and suitable for automotive body control units, door modules, roof modules, and lighting control systems requiring stable component supply, long-term lifecycle support, and ASIL-B compliance.

Supply support for S6J351CJTBSE20000 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 is a global semiconductor leader headquartered in Munich, Germany, specializing in power management, automotive, and security solutions with deep expertise in automotive-grade MCUs and safety-certified silicon.

The TRAVEO™ T1G product line-of which S6J351CJTBSE20000 is a member-is engineered specifically for automotive body electronics, delivering ASIL-B compliance, CAN FD networking, and hardware security in compact packages for space-constrained ECUs.

FAQ

What is the maximum operating frequency of the Arm Cortex-R5F core in the S6J351CJTBSE20000?

The Arm Cortex-R5F core operates at a maximum frequency of 132 MHz, verified under recommended operating conditions (3.3 V ± 0.3 V or 5.0 V ± 0.5 V, -40 to 105 °C). This frequency is sustained with zero wait-state access to 80-MHz flash memory, enabling deterministic real-time response for body control tasks such as window lift timing and anti-pinch detection.

Does the S6J351CJTBSE20000 support CAN FD with ISO 11898-1:2015 compliance?

Yes, the S6J351CJTBSE20000 integrates four fully independent CAN FD controllers compliant with ISO 11898-1:2015. Each supports data rates up to 5 Mbps, flexible data-length payloads (up to 64 bytes), and CRC protection. The dedicated 16 KB ECC RAM per channel ensures bit-error resilience in electrically noisy automotive environments.

How is the Secure Hardware Extension (SHE) configured in this specific part number?

This part (S6J351CJTBSE20000) has MK_CEER fixed to Enable per its ordering code "CJTBSE", meaning the Chip Erase Enable Register is permanently activated. The SHE module ID is 0x000F_0300, and JTAG ID is 0x002505CF-enabling secure boot, key storage, and AES-128 encryption without runtime software configuration.

What package variant does S6J351CJTBSE20000 use, and what are its thermal characteristics?

S6J351CJTBSE20000 uses the TEQFP-144 package with 0.5 mm pitch and exposed thermal pad. Its θ_JA is 28.5 °C/W (JEDEC standard board), and maximum junction temperature is 125 °C. The package supports reflow soldering per J-STD-020, with moisture sensitivity level 3, requiring bake prior to assembly if exposed beyond floor life.