Option Links - Renesas R8C/25 User Manual

6.6.Option Links

Table 6-5 below describes the function of the option links contained on this RSK board.
Reference Function
R7 Reference Voltage
R8 Oscillator
(Main clock)
R10 Oscillator
(Main clock)
R11 Oscillator
(Main clock)
R12 Oscillator
(Main clock)
R13 Oscillator
(Sub clock)
R14 Oscillator
(Sub clock)
R15 Oscillator
(Sub clock)
R16 Oscillator
(Sub clock)
R17 Oscillator
(Sub clock)
R18 Board VCC
R19 Reference Voltage
R20 Board VCC
R21 Board VCC
Option Link Settings
Fitted
Connects Reference Voltage
to microcontroller
Connects External
Microcontroller header pins to
microcontroller
Connects External
Microcontroller header pins to
microcontroller
Connects main clock (X1) to
microcontroller
Connects main clock (X1) to
microcontroller
Connects sub clock (X2) to
microcontroller
Connects sub clock (X2) to
microcontroller
Connects External
Microcontroller header pins to
microcontroller
Connects External
Microcontroller header pins to
microcontroller
Parallel resister for sub clock
(X2)
Supply to board from DC
Power Jack (J5)
Connects Board_VCC supply
to Reference Voltage supply
Connects Board_VCC supply
to board voltage line
Connects External 5V
(CON_5V) to Board_VCC
9
Alternative (Removed)
Reference Voltage
disconnected from
microcontroller
Disconnects sensitive
microcontroller signals from
external pins
Disconnects sensitive
microcontroller signals from
external pins
Main clock disconnected from
microcontroller
Main clock disconnected from
microcontroller
Sub clock disconnected from
microcontroller
Sub clock disconnected from
microcontroller
Disconnects sensitive
microcontroller signals from
external pins
Disconnects sensitive
microcontroller signals from
external pins
Not fitted
Disconnected
Reference Voltage MUST be
provided from external
interface
Board_VCC disconnected from
board voltage line
External 5V disconnected from
Board_VCC
Related To
R19
R10, R11, R12
R8, R11, R12
R8, R10, R12
R8, R10, R11
R14, R15, R16,
R17
R13, R15, R16,
R17
R13, R14, R16
R13, R14, R15
R13, R14
R20
R7
R18, R19, R21,
R22, R23
R20, R22