Option Link Settings
Reference
Function
Fitted
Alternative (Removed)
Related To
R100 External
Oscillator
Connects External Ring header
pins to Microcontroller
Disconnects sensitive
microcontroller signals from
external pins.
R96
R97
External Oscillator
Parallel resistor for crystal
Not fitted
R103 External
Subclock
Oscillator
Connects External Ring header
pins to Microcontroller
Disconnects sensitive
microcontroller signals from
external pins.
R105
R105 External
Subclock
Oscillator
Connects External Ring header
pins to Microcontroller
Disconnects sensitive
microcontroller signals from
external pins.
R103
R106 External
Subclock
Oscillator
Parallel resistor for crystal
Not fitted
R9 Board
VCC Supply to board from J5
Fit Low ohm resistor to measure
current
R32 Microcontroller
VCC1
Supply to microcontroller
VCC1
Fit Low ohm resistor to measure
current
R33
R33 Microcontroller
VCC2
Supply to microcontroller
VCC2
Fit Low ohm resistor to measure
current
R32
R25
Board VCC1
Board VCC1 connected to
Connector 3V3
Disconnected
R23,28
R28 Board
VCC1 Board VCC1 connected to
Connector 5V
Disconnected
R23,R25
R23 Board
VCC1 Board VCC1 connected to
Connector J5
Disconnected
R25,R28
R26
Board VCC2
Board VCC2 connected to
Connector 3V3
Disconnected
R24,29
R29 Board
VCC2 Board VCC2 connected to
Connector 5V
Disconnected
R24,R26
R24 Board
VCC2 Board VCC2 connected to
Connector J5
Disconnected
R26,R29
R31 Analogue
Power
Connects Board VCC1
supply to Analogue supply
Analogue supply MUST be
provided from external interface
pins. (Fit R43)
JA1,R43
R43
Analogue Power
Connects AVCC supply to
Application headers
R31 must be fitted
R31
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