D E M O A C U S E R G U I D E
A P R I L 1 0 , 2 0 0 8
10
apply an alternate power input, simply remove the cut-trace using a sharp knife. Then either
solder a wire to the thru-hole via or install a pin header and wire-wrap a wire connection.
The various power inputs are grouped together at JP1. This allows each voltage input to be
selected individually using multiple 1x2 pin headers or all voltage input may be selected using
a 2x5 pin header.
MCUVDD
The VDD option header applies board VDD to the target MCU. This jumper may be used to
apply alternate voltage levels or to measure input current under operating conditions.
VDDAD
The VDDA option header connects the target device VDDA input to the VDD rail by default.
This jumper may be used to apply alternate voltage input or to measure input current under
operating conditions.
VSSAD
The VSSA option header connects the target device VSSA input to the EVB digital ground rail
by default. This option header may be used to apply ultra clean ground or to measure input
current under operating conditions.
VREFH
The VREFH option header connects the target device VREFH input to the VDD rail by default.
This jumper may be used to apply alternate voltage input or to measure input current under
operating conditions.
VREFL
The VREFL option header connects the target device VREFL input to the ground rail by de-
fault. This option header may be used to apply ultra clean ground or to measure input current
under operating conditions.
