N25Q128A11ESF40G Introduction

The N25Q128A11ESF40G is a serial NOR flash memory chip produced by Micron1. It has a storage capacity of 128 Mbit, 

which is configured as 16M x 8 - bit1. It features a high - speed SPI interface with a maximum clock frequency of 108 MHz, 

enabling fast data transfer1. The chip operates within a voltage range of 1.7V to 2V, has a supply current of 20 mA, 

and can work stably in the temperature range of - 40°C to 85°C1.

Functions

• High - speed Data Transfer: Thanks to the SPI interface and a maximum clock frequency of 108 MHz, 
• the N25Q128A11ESF40G can achieve high - speed data reading and writing, 
• which is suitable for applications that require quick access to program code and data, 
• such as in - system programming (ISP) and code execution from flash (XiP).
• Flexible Memory Organization2: The memory is organized as 16,777,216 bytes, 
• with 256 sectors of 64KB each, 4096 subsectors of 4KB each, 
• and 65,536 pages of 256 bytes each. Additionally, there are 64 OTP (One - Time Programmable) bytes outside the main memory array, 
• which can be used for specific purposes like storing unique identifiers or configuration information.
• Reliable Data Protection: The chip has multiple data protection mechanisms. 
• It includes power - on reset and an internal timer to protect against inadvertent data changes during power - on and - off. 
• The command execution check ensures that commands are executed correctly. 
• The WRITE ENABLE operation requires a specific command to enable data modification, preventing accidental writes. Extended, dual, 
• and quad SPI protocol functionality also protects device data from excessive noise.

Applications

• Embedded Systems: It is widely used in embedded devices such as microcontrollers and DSPs. 
• It stores program code, configuration data, and some frequently accessed small - volume data. 
• For example, in smart home controllers, wearable devices, and industrial control modules, 
• the N25Q128A11ESF40G provides non - volatile storage for system software and user - defined parameters.
• Consumer Electronics: In consumer electronic products like set - top boxes, digital cameras, and MP3 players, 
• this chip is used to store firmware, system settings, and user - generated content such as photos, music, and video files.
• Automotive Electronics: It is suitable for automotive applications that require high - reliability storage, 
• such as in - vehicle infotainment systems, engine control units (ECUs), and electronic control modules (ECMs). 
• It can store vehicle diagnostic information, software updates, and multimedia data.

Series Models Analysis

• N25Q256A13ESF40G: It has a larger storage capacity of 256 Mbit. It is suitable for applications that require more storage space, 
• such as high - resolution image and video storage in security cameras and advanced in - vehicle infotainment systems.
• N25Q128A41ESF40G: It is a 128 - Mbit serial flash memory with a 4 - Kbyte subsector erase on boot sectors and XiP enabled. 
• It is designed for applications that need specific boot - sector protection and efficient code execution, 
• such as in some industrial control systems and network equipment that require secure boot and fast startup.
• N25Q64A11ESF40G (hypothetical model for illustration): Assuming it has a capacity of 64 Mbit, 
• it would be a more cost - effective option for applications with lower storage requirements, 
• like some simple IoT sensors and low - end consumer electronics 
• where the smaller capacity is sufficient to meet the storage needs for program code and basic data.

In summary, the N25Q128A11ESF40G and its series models offer a range of storage solutions for different applications, 

with features such as high - speed data transfer, flexible memory organization, and reliable data protection, 

meeting the diverse needs of various industries for non - volatile storage.

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