Application Guide for CSS6404LS-LI Industrial Grade High Performance pSRAM

I. Basic Chip Characteristics

(1) Core Technical Parameters

Storage Capacity: The chip has a storage capacity of 64Mb, which can meet various data storage needs.

Supply Voltage: It adopts a single power supply design with a working voltage range of 2.7-3.6V, and can be well compatible with the 3.3V system, improving the compatibility with different circuit systems.

Communication Interface: It is equipped with a Quad-SPI  synchronous mode interface, which supports high-speed data transmission and provides an efficient solution for communication between the chip and external devices.

Package Form: It adopts the SOP-8L 150mil package, which is compatible with mainstream assembly processes and is convenient for welding and assembly during the production process.

Temperature Range: It meets the industrial grade standard and can work stably in the temperature range of -40℃ to +85℃. The suffix -LI indicates this industrial grade temperature specification.

(2) Performance Advantages

(3) Low Power Consumption Advantages

Standby State: At 85℃, the standby current is 250μA; when the temperature rises to 105℃, the standby current is 350μA, ensuring low power consumption of the chip in standby mode.

Half Sleep Mode: At 25℃, the current in half sleep mode is only 100μA, and it can maintain the data state, achieving a good balance between low power consumption and data retention.

Dynamic Operating State: Dynamic current ≤7mA , suitable for applications sensitive to power consumption.

II. Key Selection Criteria

(1) Hardware Design Convenience

Pin Configuration: Only 4 I/O pins are required to achieve high-speed communication, greatly simplifying the hardware circuit design and reducing the pin space on the circuit board.

Self-Management Mechanism: It integrates a self-management refresh mechanism, eliminating the need for an additional DRAM controller, reducing system complexity and saving hardware costs.

Drive Capability: It has a default 50Ω LVCMOS output drive strength, which can directly drive the microcontroller IO without the need for additional drive circuits, improving the stability and reliability of the circuit.

(2) Domestic Advantage

Manufacturer: Manufactured by MANDU Technology Co., Ltd. , which has rich experience and technical strength in chip R&D and production.

Supply Chain Assurance: Supports Tape & Reel packaging, and the -LI model includes Tape & Reel packaging, facilitating material management and use on automated production lines.

Delivery Cycle: Adopting a domestic production model, it can effectively ensure the stability of product supply, shorten the delivery cycle, and reduce supply chain risks.

(3) Reliability Assurance

Temperature Adaptability: The industrial-grade temperature range of -40℃ to +85℃ allows it to operate stably in harsh industrial environments, meeting application needs in various adverse conditions.

Anti-Interference Design: It has an internal voltage sensor and supports software reset , which can effectively deal with power fluctuations and external interference, improving the chip's anti-interference ability and system stability.

III. Typical Application Scenarios

Portable Electronic Devices: Suitable for portable devices such as smartwatches and AR/VR glasses. Its low power consumption can extend the battery life of the device, and the small package form meets the strict space requirements of portable devices.

IoT Terminals: Can be used for sensor data buffering, maintaining data through self-refresh function to ensure data integrity in low power consumption state, suitable for long-term running IoT devices.

Industrial Control Systems: Plays an important role in high-speed data acquisition buffering scenarios. The 133MHz burst transmission rate can meet the demand for high-speed data processing in industrial control.

IV. Selection Precautions

(1) Package Type Selection

CSS6404LS-LI: It adopts SOP-8 packaging. This packaging form is suitable for manual soldering and maintenance, and is more appropriate for scenarios that require frequent circuit debugging and maintenance.

CSS6404LU-LI : It adopts the ultra-small USON-8L 3x2mm packaging, suitable for space-limited scenarios, and can meet the design requirements of miniaturized devices.

(2) Operation Mode Configuration

Page Read Operation: When using the Linear Burst mode, the operating frequency needs to be ≤84MHz to ensure the stability and accuracy of data reading.

High-Speed Data Transmission: The 32-byte Wrap Burst mode supports the highest frequency of 133MHz, suitable for scenarios with high data transmission rate requirements.

(3) Power-On Initialization Process

First, ensure that the VDD voltage is stable, then keep CE# high for 150μs, and then send the RESET command duration > 50ns . After completing the above steps, the chip can enter the normal working state.

V. Model Parameter Comparison

VI. Product Summary

The CSS6404LS-LI chip, with its 3.3V compatibility, high reliability at the industrial grade, 133MHz QSPI burst performance, and the advantage of domestic supply chain, has become an ideal alternative to imported pSRAMs such as ISSI/AP Memory. The chip is suitable for embedded system designs that are sensitive to power consumption, size, and cost, and has a wide application prospect in fields such as industrial control, wearable devices, and IoT terminals. It is recommended to prioritize the selection of this chip in related designs.

About Mandu Technology

Shenzhen Mandu Technology Co., Ltd. has steadfastly centered its operations on the distribution of high-performance, high-quality, and highly reliable integrated circuit products. Its portfolio encompasses memory chips, differential crystal oscillators, and MCU microcontrollers, while progressively integrating analog signal chain products. The company prides itself on delivering comprehensive and cost-effective solutions to its customers. Its products find applications across a broad spectrum of industries, including but not limited to network communication, industrial control, robotics, medical equipment, personal health, and numerous other fields.

Business: sales@manduic.com

Website: www.manduic.com

Sales: +86 150-1290-5940