STM32 use HSI clock source for USB operation.

pichetr222 · ‎2009-07-09

Posted on July 09, 2009 at 10:02

norbertg · ‎2011-05-17

Posted on May 17, 2011 at 13:17

Hi,

Code:

2.3.20 Universal serial bus (USB)

The STM32F103xx performance line embeds a USB device peripheral compatible with the

USB full-speed 12 Mbs. The USB interface implements a full-speed (12 Mbit/s) function

interface. It has software-configurable endpoint setting and suspend/resume support. The

dedicated 48 MHz clock is generated from the internal main PLL (the clock source must use

a HSE crystal oscillator).

STM32F103x8/B Datasheet rev.10 page 17

so probably no,

I think it's all about HSI accuracy, but you can always try 🙂

pichetr222 · ‎2011-05-17

Posted on May 17, 2011 at 13:17

Hi all,

I develop STM32 connect to PC via USB port.

I want to made it low cost.

Is it suitable to use HIS clock for USB operation ?.

Thanks in advance.

pichet

:-]

[ This message was edited by: pichetr22 on 09-07-2009 10:56 ]