- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Hello,
Is it necessary to take care of power-on sequence (timing, voltage, etc.) for VDDD and VBUS of CY7C65211A?
Please let me know if there is a power-on sequence.
Currently, after 5V is input to VBUS (pin 15), VDDD (pin 24) 3.3V rises 250μs after VBUS rises.
Is this a problem as a power-on sequence?
Regards.
Solved! Go to Solution.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Hi, @NXTY_Nishinaga ,
Thank you for posting into our community.
There is no power-on sequence requirement for USB-Serial devices (CY7C65211/213/215 and its corresponding A parts).
So VCCIO/VDDD can be powered before VBUS.
You can also refer to the thread below for more details.
What are the power sequencing requirements for CY7C65211
If the replay above solves your issue, please push "Accept as Solution".
Thanks,
TakashiO
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
Hi, @NXTY_Nishinaga ,
Thank you for posting into our community.
There is no power-on sequence requirement for USB-Serial devices (CY7C65211/213/215 and its corresponding A parts).
So VCCIO/VDDD can be powered before VBUS.
You can also refer to the thread below for more details.
What are the power sequencing requirements for CY7C65211
If the replay above solves your issue, please push "Accept as Solution".
Thanks,
TakashiO