GD25Q64CSJG

Memory IC Overview

The GD25Q64CSJG is a 64M-bit (8M x 8) SPI NOR Flash memory manufactured by GigaDevice. It operates on a single 3.3V power supply with a voltage range of 2.7V to 3.6V. The device supports Standard, Dual, and Quad SPI interfaces with a maximum clock frequency of 120MHz. It features uniform sector architecture with 4K-byte sectors and 32/64K-byte blocks. Key electrical parameters include an active read current of up to 25mA and typical standby/deep power-down currents of 1μA. The component is housed in an SOP-8 package and rated for industrial operating temperatures from -40°C to +105°C.

Memory IC Feature Summary

• Supports Standard, Dual, and Quad Serial Peripheral Interface (SPI) modes for flexible data transfer rates.
• Provides hardware and software write protection mechanisms including block protect bits and WP# pin control.
• Features advanced security capabilities with unique 128-bit identification and programmable security registers.
• Enables Execute In Place (XIP) operation for direct code execution from the flash memory.

Memory IC Applications

• Storage of firmware and bootloaders in embedded systems
• Data storage for IoT devices and consumer electronics
• Configuration parameter storage in industrial controllers
• Code execution in place (XIP) applications

Memory IC Procurement Notes

Verify the specific suffix 'SJG' corresponds to the industrial temperature grade (-40°C to +105°C) and SOP-8 208mil package as documented. Confirm that the ordering information matches the manufacturer's current valid part number list, as availability and specifications may change. Ensure compatibility with system voltage requirements within the 2.7V to 3.6V range before integration.

Memory IC Selection Notes

Select this component when a 64M-bit capacity with industrial temperature stability is required. The SOP-8 package suits space-constrained surface-mount designs. Consider the Quad SPI capability if high-speed data throughput is necessary. Verify that the host controller supports the required SPI modes and command sets for optimal performance.

Memory IC Part Context

This part belongs to the GD25Q64C series of 3.3V Uniform Sector Dual and Quad Serial Flash memories. The series is designed for high-performance applications requiring reliable non-volatile storage. GigaDevice positions these components as solutions for embedded systems needing robust data retention and flexible interface options.

Memory IC Replacement Considerations

GD25Q64CSIG is a similar variant within the same series but typically specifies a commercial temperature range (-40°C to +85°C). Verify temperature ratings and package dimensions before substitution. Other manufacturers offer pin-compatible alternatives, but command set and timing verification is essential.

Memory IC FAQ

What is the difference between the WP# and HOLD# pins in Quad SPI mode?

In standard SPI mode, WP# provides hardware write protection and HOLD# pauses serial communication. When the Quad Enable (QE) bit is set to 1 for Quad SPI operation, these pins function as bidirectional I/O pins (IO2 and IO3), disabling their dedicated WP# and HOLD# functions.

How does the device handle write protection?

The GD25Q64CSJG offers multiple protection methods: Software protection via Block Protect (BP) bits in the status register, Hardware protection using the WP# pin to lock status register bits, and Power Supply Lock-Down or One-Time Programmable settings depending on configuration.