[Answered] Clarification on strapping pin MTDO

Post Reply
User avatar
kolban
Posts: 1683
Joined: Mon Nov 16, 2015 4:43 pm
Location: Texas, USA

[Answered] Clarification on strapping pin MTDO

Postby kolban » Wed Nov 02, 2016 2:46 pm

I am looking at the latest release (as of the date of this post) of the ESP-WROOM-32 Datasheet. On page 5 there is a table of the 6 strapping pins used by the ESP32. My puzzle is that the pin known as MTDO is listed twice. Is this an error? Should one of these two instances of MTDO be a different pin?
Last edited by kolban on Thu Nov 03, 2016 12:54 am, edited 1 time in total.
Free book on ESP32 available here: https://leanpub.com/kolban-ESP32
Top
WiFive
Posts: 3529
Joined: Tue Dec 01, 2015 7:35 am

Re: Clarification on strapping pin MTDO

Postby WiFive » Wed Nov 02, 2016 3:06 pm

I don't think there are any consequences to the pin having two functions because they are exclusive to two different modes: flash boot mode and sdio slave download mode.
Top
ESP_Angus
Posts: 2344
Joined: Sun May 08, 2016 4:11 am

Re: Clarification on strapping pin MTDO

Postby ESP_Angus » Wed Nov 02, 2016 10:26 pm

WiFive is correct. There are some more details in this thread: http://esp32.com/viewtopic.php?f=12&p=1292
Top
Post Reply

Return to “Hardware”

Who is online

Users browsing this forum: Google [Bot], romboidale and 38 guests