Renesas R9A08G045S37GBG#AC0

Overview

R9A08G045S37GBG#AC0 from Renesas Electronics is a high-performance, dual-core heterogeneous application processor in the RZ/G3S Group, integrating an Arm Cortex-A55 (up to 1.9 GHz) and Cortex-M33 (up to 400 MHz) with 2 MB L2 cache, DDR4/LPDDR4x memory controller, and hardware-accelerated video codec supporting 4K60 H.265 decode. It targets industrial HMIs, edge AI gateways, and secure IoT edge nodes requiring real-time responsiveness and Linux/RTOS coexistence.

For engineers reviewing the R9A08G045S37GBG#AC0 datasheet, R9A08G045S37GBG#AC0 pinout, R9A08G045S37GBG#AC0 application, or R9A08G045S37GBG#AC0 equivalent, key selection criteria include dual-core asymmetric architecture support, integrated TrustZone security, 16-bit DDR4/LPDDR4x interface timing compliance, and automotive-grade thermal range validation per JESD22-A104.

Technical Context

The R9A08G045S37GBG#AC0 implements a tightly coupled Cortex-A55 + Cortex-M33 subsystem with shared L2 cache and coherent interconnect, enabling deterministic real-time task execution on the M33 while offloading complex OS-driven workloads to the A55. It supports ARMv8-A and ARMv8-M instruction sets with TrustZone for secure world isolation and hardware-enforced memory protection.

Its memory subsystem includes a 16-bit DDR4/LPDDR4x controller with 2500 MT/s data rate, AXI4-based internal bus fabric with QoS arbitration, and dedicated DMA channels for camera, display, and audio interfaces - all synchronized under SYSC-managed clock domains and power state transitions.

Key Specifications

Pinout & Package

FC-BGA package with 376 I/O terminals in 15 mm × 15 mm body, 0.65 mm ball pitch, and Pb-free matte Sn finish. Designed for 6-layer PCB routing with controlled-impedance DDR and high-speed SerDes traces.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar heterogeneous application processor applications.

Compared with R9A08G045S37GBG#AC1 and i.MX 8M Plus, the R9A08G045S37GBG#AC0 uniquely balances 4K60 hardware video decode, extended temperature operation, and minimal 15 mm × 15 mm footprint - making it optimal for space-constrained, thermally aggressive edge applications requiring Linux + RTOS coexistence.

Availability

R9A08G045S37GBG#AC0 is available at Aetrix Electronics and suitable for industrial HMIs, edge AI gateways, railway onboard terminals, and secure IoT edge nodes requiring stable component supply across multi-year production cycles.

Supply support for R9A08G045S37GBG#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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, power, and SoC solutions for industrial, automotive, and enterprise markets.

The RZ/G series - including the R9A08G045S37GBG#AC0 - is designed for high-reliability embedded Linux applications demanding real-time responsiveness, security, and long-term availability in industrial edge systems.

FAQ

What is the maximum operating frequency of each core in the R9A08G045S37GBG#AC0?

The R9A08G045S37GBG#AC0 features an Arm Cortex-A55 core rated up to 1.9 GHz and an Arm Cortex-M33 core rated up to 400 MHz. These frequencies are guaranteed across the full −40°C to +125°C junction temperature range and under specified voltage conditions (VDD_CPU = 0.8–1.1 V). The R9A08G045S37GBG#AC0 dynamically scales both cores using DVFS based on thermal and workload conditions.

Does the R9A08G045S37GBG#AC0 support LPDDR4x memory, and what is the maximum data rate?

Yes, the R9A08G045S37GBG#AC0 supports LPDDR4x memory at up to 2500 MT/s on its 16-bit interface. It also supports DDR4 at the same data rate. The memory controller includes hardware-calibrated ODT, write leveling, and per-byte deskew to ensure signal integrity at full speed - validated per JEDEC JESD209-4B specifications.

How does the R9A08G045S37GBG#AC0 implement hardware security for secure boot?

The R9A08G045S37GBG#AC0 performs secure boot using a ROM-resident bootloader that verifies signed firmware images in external flash using ECDSA-P256 and SHA-256. Keys are stored in eFuse or secure SRAM, and execution only proceeds if signature validation passes. This process is enforced within the TrustZone secure world and is immutable - no software patch can bypass it.

What video codecs and resolutions does the R9A08G045S37GBG#AC0 hardware accelerator support?

The R9A08G045S37GBG#AC0 integrates a dedicated video decoder supporting H.265 (HEVC) and H.264 (AVC) decode up to 4K resolution at 60 fps. It does not support encode functions. The decoder operates independently of the CPU cores and delivers full-frame output via AXI-DMAC to system memory - verified in Renesas' RZ/G3S Evaluation Kit with GStreamer-based pipeline testing.

Is the R9A08G045S37GBG#AC0 pin-compatible with other members of the RZ/G3S family?

No, the R9A08G045S37GBG#AC0 is not pin-compatible with other RZ/G3S variants such as R9A08G045S37GBG#AC1 or R9A08G045S37GBG#AC2. While sharing the same 376-ball FC-BGA package outline and ball pitch, pin assignments differ significantly for power domains, DDR interface signals, and peripheral multiplexing - requiring unique PCB layout per variant.