FAQs
cancel
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for 
Search instead for 
Did you mean: 

32H563Zi can't work in VDD=1.8V?

Charles63
Associate II

‎2023-11-02 01:25 AM - edited ‎2023-11-02 01:29 AM

Hi, Sir:

 Currently using H563ZI (MB1404C) to develop programs.
When VDD=3.3V, MCU works normally
When VDD=1.8V, the MCU functions abnormally (USB function fail), but the specification indicates that it can support VDD=1.8V. Where should I set this on the EVK?

Labels:
0 Kudos
3 REPLIES 3
Jaroslav JANOS
ST Employee

‎2023-11-02 02:31 AM

Hello @Charles63,

what is the voltage on VDDUSB? Is it same as VDD? If yes, and you are using USB, it must be above 3.0V.

BR,
Jaroslav

To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.

0 Kudos
Charles63
Associate II
In response to Jaroslav JANOS

‎2023-11-02 03:20 AM

hi, Sir

 

H563ZI(MB1404C) EVB

  • VDD = 3.3V + VDD_USB = 3.3V --> USB function is normal
  • VDD = 1.8V + VDD_USB = 3.3V --> USB function abnormality
0 Kudos
Charles63
Associate II

‎2023-11-07 04:14 AM

Hi, Sir :

   How to solve this problem? 

  • Issue --> VDD = 1.8V , VDDUSB = 3.3V , USB function is not work
0 Kudos
Top