PSRAM Compliant with State Grid Standards, Compatible with Hisilicon Hi3931, Ideal for Transformer Area Upgrade Projects

Amid the intelligent upgrading of power distribution areas in smart grids, concentrators serve as core terminals for data collection and transmission.

They undertake critical tasks including high-frequency data acquisition across multiple nodes, automatic distribution network topology identification and rapid fault location.

Their performance directly impacts grid operation efficiency and data accuracy, which sets stringent requirements on the memory capacity and data processing capability of supporting HPLC chips.

As a mainstream chip for local communication modules of State Grid concentrators, Hisilicon Hi3931 is widely deployed in various distribution area upgrade projects thanks to its reliable communication performance.

However, its on-chip memory shortage has become a major bottleneck restricting compliant implementation and performance improvement of projects.

Our 64Mbit QSPI PSRAM features perfect compatibility and superior performance, making it the optimal memory solution for Hisilicon Hi3931.

It effectively addresses industry pain points and facilitates efficient and compliant project delivery.

The latest mandatory standards such as State Grid Specification Q/GDW 1374.2-2025 Technical Specifications for Power User Electricity Information Acquisition System clearly stipulate that HPLC routing and acquisition modules must be equipped with large-capacity operating cache to support core functions including minute-level data collection and distribution network topology identification.

A provincial State Grid power company launched an intelligent upgrade project covering over 500 distribution areas across the province.

The core requirements include minute-level data collection from more than 100 smart meters via concentrators, automatic topology identification and rapid fault location, with full compliance with State Grid regulations.

Hisilicon Hi3931 HPLC chip was selected as the core component for the local communication module of concentrators.

Nevertheless, its limited built-in SRAM failed 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 evaluation and comparison, our 64Mbit QSPI PSRAM was finally adopted as the supporting memory solution to ensure full compliance and reliable performance of the project.

As the preferred supporting memory for Hisilicon Hi3931, our 64Mbit (8MB) PSRAM perfectly compensates for the chip’s insufficient memory while delivering easy adoption and stable operation.

The built-in 4MB memory of Hisilicon Hi3931 can only support basic communication protocols, and is incapable of processing massive node data, path planning algorithms and message cache required for topology identification.

This would easily lead to topology identification lag and data packet loss, hindering project progress and compliance acceptance.

Our QSPI-interface PSRAM achieves pin-to-pin seamless connection with Hisilicon Hi3931.

No PCB modification or driver debugging is needed, which greatly cuts integration costs and shortens project lead time.

Supporting a high bandwidth of 84MHz with read/write latency below 20ns, it can cache hundreds of power communication messages and complete distribution network topology tables in real time, delivering sufficient resources for efficient operation of topology identification algorithms.

It thoroughly remedies the memory deficiency and eliminates lag and packet loss issues.

Practical operation has verified the outstanding advantages of our PSRAM as the ideal supporting memory for Hisilicon Hi3931.

After large-scale deployment in over 500 distribution areas of the province, the solution delivered remarkable results.

The topology identification function of concentrators runs stably, and all malfunctions caused by insufficient memory are eliminated.

Data collection efficiency is greatly improved, fully complying with the State Grid standard for minute-level acquisition.

Manufactured in line with industrial-grade criteria, our PSRAM operates stably within the temperature range of -40℃ to +85℃, adapting to harsh outdoor working environments in distribution areas.

No memory-related failures occurred during long-term operation.

Fully compliant with State Grid standard Q/GDW 1374.2-2025, our product has won high recognition from the provincial State Grid power company and project partners.

It has become a prime memory choice for Hisilicon Hi3931 and provides a replicable reference for subsequent distribution area upgrade projects across the province and nationwide.

Feel free to contact us for samples, datasheets, customized compatibility solutions and professional technical support.

Let us jointly drive the high-quality development of smart grids.

Tel: +86 150-1290-5940.

Email: sales@manduic.com.

Website: www.manduic.com.