Author: Francis Rowe <firstname.lastname@example.org>
Date: Sat, 16 May 2015 13:41:07 +0100
docs/install/bbb_setup.html: Warn user not to use the 5V ATX pins
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/docs/install/bbb_setup.html b/docs/install/bbb_setup.html
@@ -103,7 +103,11 @@
power on the PSU.
- On newer 24-pin ATX PSUs, there is an additional 3.3V (orange) on pin 12.
+ <b>DO **NOT** use pin 4, 6, do **NOT** use pin 19 or 20 (on a 20-pin ATX PSU), and
+ DO **NOT** use pin 21, 22 or 23 (on a 24-pin ATX PSU). These are 5V, and they **WILL**
+ kill your flash chip. ***NEVER*** supply more than 3.3V to your flash chip.
+ (that is, if it's a 3.3V flash chip. 5V and 1.8V SPI flash chips do exist, but they are rare. always
+ check what voltage your chip takes. most take 3.3V)</b>
You only need one 3.3V supply and one ground for the flash chip, after grounding PS_ON#.