GD25LQ256DWIGR

GD25LQ256DWIGR is a type of non-volatile Flash memory which provides a high number of program/erase cycles, low power consumption, reliability, and fast write / erasing operation.

It is built into a very small 8-pin package and its die size is mere 1.7mm x 1.8mm. It can operate at temperatures ranging from -40 to +85 degrees Celsius.

The GD25LQ256DWIGR is a 256Mb Serial Peripheral Interface (SPI) NOR Flash device which is well-suited for low-voltage and low-power applications. It has a broad range of application fields such as consumer, automotive, industrial, and medical.

One of the most popular uses of this device is storing firmware for embedded systems. It can also be used for storing user data, software applications and configuration data for a variety of embedded systems. Since it is non-volatile, it can be used for storing data even if the power supply is lost.

Working Principle

The GD25LQ256DWIGR uses a Von Neumann architecture which enables it to read, write and erase data using the same signals. It has two main control signals: the Chip Select (CS) and the Serial Data Input (SDI). Data can be written or read using a set of serial data commands which are sent through the SDI pin. The CS pin is used to initiate and terminate the data transfer.

The device supports page write and page read operations. A page is a section of Flash memory which the device can execute write and read operations with a single command. This feature makes the device faster, and more power efficient since only a section of the Flash memory needs to be accessed for the necessary operation.

The device also supports programming and erasing of individual bytes. This is done by setting the Start Bit (SB) to ‘1’, writing the 8-bit data, and then asserting the CS pin. Programming and erasing of individual bytes is slightly slower due to the fact that the device needs to set the memory’s active area to the individual byte and execute the programming operations.

The GD25LQ256DWIGR device also supports Sector, Quad and Bulk Erase operations. This enables the device to erase large portions of memory with a single command. This increases the device’s flexibility, as it can be used as small as a single byte and as large as whole sectors.

Overall, the GD25LQ256DWIGR is a very reliable and robust device which can be used in a variety of applications. It is well-suited for low-power, low-voltage applications due to its power efficient design and the various programming and erasing operations which it supports.