PSRAM Compatible with Hisilicon Hi3931, Compliant with State Grid Standards, Empowering Selection for Transformer Area Upgrade
Amid the intelligent upgrade of distribution transformer areas in smart grids, concentrators serve as core terminals for data collection and transmission. They undertake critical tasks including high‑frequency multi‑node data acquisition, automatic distribution area topology identification, and rapid fault location. Their performance directly determines grid operation‑maintenance efficiency and data accuracy, which imposes stringent requirements on memory capacity and data processing capability of supporting HPLC chips.
As a mainstream chip choice for local communication modules of State Grid concentrators, Hisilicon Hi3931 is widely adopted in various distribution area upgrade projects for its stable communication performance. However, its limited on‑chip memory has become a key bottleneck restricting compliance implementation and performance upgrading of projects. Our 64Mbit QSPI PSRAM, featuring precise compatibility and core performance advantages, acts as the optimal memory solution for Hisilicon Hi3931, effectively addressing industry pain points and facilitating efficient and compliant project delivery. Latest mandatory standards such as State Grid Specification Q/GDW 1374.2‑2025 Technical Specifications for Power User Electricity Consumption Information Collection System explicitly require HPLC routing collection modules to be equipped with large‑capacity operating cache to support core functions including minute‑level data collection and distribution area topology identification. A provincial State Grid power utility launched an intelligent distribution area upgrade project covering over 500 distribution areas across the province. Its core requirements include minute‑level data collection from more than 100 smart meters by concentrators, automatic topology identification, and rapid fault location, with full compliance with State Grid standards.
Hisilicon Hi3931 HPLC chip was prioritized as the core component of local communication modules for concentrators. Nevertheless, the chip’s limited on‑chip SRAM fails to meet the mandatory requirement for large‑capacity operating cache specified by State Grid standards, resulting in prominent bottlenecks in topology data storage and processing. After multiple rounds of selection and comparison, our 64Mbit QSPI PSRAM was finalized as the supporting memory solution to ensure full compliance and performance standards of the project.
As a preferred supporting memory for Hisilicon Hi3931, our 64Mbit (8MB) PSRAM specifically compensates for the chip’s memory shortage while ensuring easy selection and stable performance. The built‑in 4MB memory of Hisilicon Hi3931 only supports basic communication protocols, unable to process massive node data, path‑planning algorithms and message buffers required for topology identification, which may cause topology recognition lag, data packet loss and other issues hindering project progress and compliance acceptance.
Our PSRAM adopts a QSPI interface with pin‑to‑pin seamless compatibility with Hisilicon Hi3931. No PCB modification or driver debugging is needed, greatly reducing integration costs and shortening project lead time. Supporting high bandwidth of 84MHz with read‑write latency below 20ns, it can cache hundreds of power messages and complete distribution area topology tables in real time, fully supporting efficient operation of topology identification algorithms, eliminating lag and packet loss issues.
Selection advantages have been translated into practical project results, verifying the rationality and superiority of our PSRAM as a supporting solution for Hisilicon Hi3931. After mass deployment in over 500 distribution areas of the province, the solution achieved remarkable results as expected: stable topology identification of concentrators, elimination of memory‑related malfunctions, and significantly improved data collection efficiency fully complying with State Grid’s minute‑level collection standard.
In addition, our PSRAM is manufactured under strict industrial‑grade standards with an operating temperature range of ‑40℃ to +85℃, adapting to harsh outdoor distribution area environments with stable long‑term operation free of memory‑related faults. Fully compliant with State Grid Q/GDW 1374.2‑2025, it has gained high recognition from the provincial State Grid power utility and project partners. It serves as a preferred memory option for Hisilicon Hi3931, providing replicable reference for subsequent distribution area upgrade projects across the province and nationwide.
For samples, datasheets, customized adaptation solutions or professional technical support, please contact us as follows to jointly empower high‑quality development of smart grids:Hotline: +86‑150‑1290‑5940Technical Support: sales@manduic.comOfficial Website: www.manduic.com