Infineon Technologies S6J311DJACSE20000

Overview

S6J311DJACSE20000 from Infineon Technologies (formerly Cypress) is a 32-bit Arm® Cortex®-R5 automotive microcontroller designed for in-vehicle real-time control applications. It operates at up to 144 MHz, integrates 3072 KB + 64 KB program flash and 192 KB system SRAM, supports CAN-FD (2 channels, 1 Mbps), and features dual 12-bit ADCs with 64 total channels.

For engineers reviewing the S6J311DJACSE20000 datasheet, S6J311DJACSE20000 pinout, S6J311DJACSE20000 application, or S6J311DJACSE20000 equivalent, key selection criteria include Cortex-R5 real-time determinism, dual CAN-FD interface timing compliance, 144 MHz clock stability under automotive temperature range, and flash security with SHE support.

Technical Context

The S6J311DJACSE20000 implements a dual-issue superscalar Arm v7/Thumb-2 Cortex-R5 core with 16 KB instruction and 16 KB data caches, SEC-DED ECC on TCM ports, and low-latency VIC interrupt handling. Its AXI master interface supports 64-bit instruction/data access and 32-bit I/O access, enabling deterministic memory-mapped peripheral control.

It integrates two CAN-FD controllers compliant with ISO 11898-1:2015 (v3.2.0), each with 192 receive and 32 transmit message buffers, operating at up to 40 MHz clock input and 1 Mbps bus rate. The device uses a 5 V single supply with internal 1.2 V regulation and supports CR oscillator calibration for RTC accuracy.

Key Specifications

Pinout & Package

This device is housed in a 176-pin LEP (Low-profile Exposed Pad) package with 0.4 mm pitch, optimized for automotive thermal dissipation and board-level reliability under vibration and temperature cycling.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7F7010233AFP#AA0 and TC377TP-64F200N-DC, the S6J311DJACSE20000 delivers optimal balance of CAN-FD readiness, ASIL-B runtime determinism, and cost for mid-tier automotive ECUs-avoiding both legacy CAN limitations and over-engineered ASIL-D overhead.

Availability

S6J311DJACSE20000 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS sensor hubs, and electric power steering systems requiring stable component supply across extended automotive product lifecycles.

Supply support for S6J311DJACSE20000 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 MCUs, and security solutions, with global R&D and manufacturing infrastructure.

The TRAVEO™ T1G family-including the S6J3110 series-is engineered specifically for automotive body electronics and chassis applications demanding real-time performance, functional safety, and robust CAN-FD connectivity.

FAQ

What is the maximum ambient temperature rating for continuous operation?

The S6J311DJACSE20000 is qualified for operation from −40 °C to +125 °C ambient temperature per AEC-Q100 Grade 2, with thermal derating applied above 105 °C junction temperature. Its 55 nm CMOS process and exposed-pad LEP176 package enable sustained 144 MHz operation within this range when mounted on 4-layer PCBs with ≥2 oz copper and thermal vias.

Does this MCU support JTAG-based boundary scan testing in production?

Yes, the S6J311DJACSE20000 implements full IEEE 1149.1-compliant boundary scan with dedicated TCK/TMS/TDI/TDO pins and programmable scan chain length. It supports INTEST and EXTEST instructions for PCB interconnect verification, and its JTAG interface remains accessible even when flash security is enabled-enabling post-solder test without compromising firmware confidentiality.

How many CAN-FD message buffers are allocated per channel, and are they configurable?

Each of the two CAN-FD channels provides 192 dedicated receive message buffers and 32 transmit message buffers, all implemented in on-chip SRAM. Buffer allocation is fully configurable via the CAN Message RAM Configuration Register (CAN_MRCFG), allowing dynamic partitioning between standard and extended identifiers, FD data fields, and filtering modes without fixed memory mapping constraints.

Is the built-in CR oscillator calibrated at factory, and can it be re-tuned in-system?

The 100 kHz CR oscillator is factory-trimmed to ±1% accuracy at 25 °C and stored in OTP. Runtime calibration is supported via the RTC calibration register (RTC_CALIB), which adjusts the prescaler based on measured ratio between main crystal (4 MHz) and CR output-enabling drift compensation across −40 °C to +125 °C with typical ±0.5 ppm/day stability after calibration.