ST72682R21 datasheet(18/36 Pages) STMICROELECTRONICS

Part #	ST72682R21

Description	USB 2.0 high-speed Flash drive controller

PDF	36 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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18 / 36 page

Human interface implementation

ST72682

18/36

Human interface implementation

6.1

LED behavior

The application is designed to manage 2 LEDs. This behavior is configurable through PC

dedicated software: ‘ST7268x Production Tool’.

By default, LED 1 responds to NAND memory access activity and LED 2 responds to USB

activity.

Use of LED 1 is optional. When this option is not active, LED 2 reacts to both USB and

NAND memory activity.

6.2

Read-only switch

The READ ONLY pin of the ST72682 is an input pin to be connected to VDD or GND

depending on the behavior of the device.

●

When this pin is connected to GND, no limitations are applied on the PC command

received.

●

When this pin is connected to VDD or unconnected, the firmware filters all accesses to

the NAND memory which modify the NAND memory state (write, erase, etc.) and

returns an error to the PC.

ST72682R21 Datasheet(PDF) 18 Page - STMicroelectronics