USB flash drive

A USB-Flash Drive is a non-volatile device for storing and retaining data. Data copied to the device is stored in the flash memory.

A USB flash drive has a limited write and erase cycle (10,000 to 100,000 times). However, the data that is permanently stored on the drive can be read any number of times.

USB flash devices are small, compact, and allow you to connect the device to any computer with a USB connector.

Design

The standard device has an oblong shape and a removable USB cover that protects the USB connector. In addition, it is possible to enable pin-code entry, fingerprint verification, and other data protection methods for USB drives.

Size: about 3-5 centimeters.

Weight: approximately 60g.

Components

1 – USB plug. It allows you to connect the flash drive to a USB reader device.

2 - Microcontroller. This is the chip that transmits data and manages the flash memory.

3 - Flash memory chip. A NAND-type memory chip that is responsible for data storage.

4 - Additional memory chip.

5 - Crystal oscillator. It is used to generate the required frequency for the function of the controller and flash memory. If this device malfunctions, the flash drive is recognized as an "unknown device".