Renesas R7FS1JA783A01CNF#AC0

Overview

R7FS1JA783A01CNF#AC0 from Renesas Electronics is a 32-bit Arm® Cortex®-M23-based microcontroller in the Synergy S1JA Group, featuring 1 MB Flash, 256 KB SRAM, and integrated AES-256/SHA-256 cryptographic accelerators. It operates at up to 48 MHz, supports USB Full-Speed Device, CAN FD (with protocol controller), and includes 12-bit ADC with 24 channels - deployed in industrial HMI and secure IoT edge nodes.

For engineers reviewing the R7FS1JA783A01CNF#AC0 datasheet, R7FS1JA783A01CNF#AC0 pinout, R7FS1JA783A01CNF#AC0 application, or R7FS1JA783A01CNF#AC0 equivalent, key selection criteria include its TrustZone-enabled security architecture, CAN FD timing compliance (ISO 11898-1:2015), USB device stack readiness, and 105°C extended temperature grade for harsh industrial environments.

Technical Context

The R7FS1JA783A01CNF#AC0 implements Arm TrustZone for Armv8-M to isolate secure/non-secure firmware execution domains, with dedicated secure boot ROM and hardware key storage. Its peripheral set includes a dual-channel CAN FD controller supporting data rates up to 5 Mbps and ISO 11898-1:2015 conformance, plus a full-speed USB 2.0 device controller with integrated PHY.

System-level timing is managed via a programmable PLL with FLL fallback, supporting multiple clock sources including external crystal (1–20 MHz), internal high-speed RC (48 MHz), and sub-1 MHz LSI oscillator. Memory protection is enforced by MPU with 8 regions, each configurable for read/write/execute permissions and shareability attributes.

Key Specifications

Pinout & Package

LQFP-100 package with exposed thermal pad; 100-pin square outline, 0.5 mm pitch, JEDEC MS-026 compliant. Pin 1 marked by dot; pin numbering counterclockwise from top-left corner.

Key Features

Applications

Equivalent & Alternatives

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

Compared with R7FS1JA783A01CNF#AC0, the R7FS1JA782A01CNF#AC0 sacrifices CAN FD and half the Flash for lower unit cost, while the RA4M2 offers Ethernet but lacks native CAN FD timing compliance and immutable secure boot - making R7FS1JA783A01CNF#AC0 optimal for secure, CAN FD–centric industrial edge nodes.

Availability

R7FS1JA783A01CNF#AC0 is available at Aetrix Electronics and suitable for industrial HMI, secure edge gateways, smart building controllers, condition monitoring nodes, and CAN FD–based diagnostic tools requiring stable component supply across multi-year production cycles.

Supply support for R7FS1JA783A01CNF#AC0 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 headquartered in Tokyo, Japan, specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and enterprise markets.

The Synergy S1JA Group targets secure, real-time industrial edge applications - designed to unify functional safety readiness, cryptographic acceleration, and fieldbus interoperability in a single scalable MCU platform.

FAQ

Does R7FS1JA783A01CNF#AC0 support CAN FD physical layer (PHY) directly?

No, the R7FS1JA783A01CNF#AC0 integrates a CAN FD protocol controller only - it requires an external CAN FD transceiver (e.g., TJA1044T/3) for physical layer signaling. The MCU provides TX/RX signals, error handling, bit timing configuration, and ISO 11898-1:2015-compliant frame processing, but does not include a built-in PHY driver circuit.

What is the maximum operating frequency of R7FS1JA783A01CNF#AC0 and how is it achieved?

The R7FS1JA783A01CNF#AC0 operates at up to 48 MHz using its on-chip PLL, which can be configured to multiply an external crystal (1–20 MHz) or internal high-speed RC oscillator. The PLL output feeds the system clock (HCLK), with optional FLL fallback for robustness during crystal startup or failure - ensuring deterministic timing for CAN FD bit arbitration and USB frame scheduling.

Is R7FS1JA783A01CNF#AC0 qualified for automotive applications?

No, the R7FS1JA783A01CNF#AC0 is rated for industrial use (−40°C to +105°C) and classified as "Standard" quality grade per Renesas documentation. It is not AEC-Q100 qualified and is not intended for automotive safety-critical systems such as powertrain or ADAS - though it may be used in non-safety automotive aftermarket or body electronics where qualification is not mandated.

How does the TrustZone implementation in R7FS1JA783A01CNF#AC0 differ from software-only security approaches?

The R7FS1JA783A01CNF#AC0 implements Arm TrustZone for Armv8-M at silicon level - providing hardware-enforced memory isolation, secure exception vectors, and dedicated secure debug access. Unlike software-only sandboxing, this prevents unauthorized access to secure firmware, cryptographic keys, and peripherals even if the non-secure application is compromised - a foundational requirement for certified secure boot and OTA update integrity.

Can R7FS1JA783A01CNF#AC0 run the Renesas Synergy Software Package (SSP) without modification?

Yes, the R7FS1JA783A01CNF#AC0 is fully supported by the Renesas Synergy Software Package (SSP) v3.x and later. SSP provides validated drivers, middleware (including USB device stack, CAN FD HAL, and cryptographic APIs), and project templates specifically built for the S1JA Group - enabling rapid development of secure, fieldbus-connected applications without low-level register programming.