Table of Contents
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Reference
Function
R22
Board VCC
R23
Microcontroller
VCC
R30
User I/O Power
Supply
R31
SW1
R44
RS232 Transceiver
R45
Programming
Serial Port
R46
Programming
Serial Port
R47
E8
R50
Microcontroller pin
function select
R51
Microcontroller pin
function select
R52
Microcontroller pin
function select
R53
Microcontroller pin
function select
R54
Microcontroller pin
function select
R55
Microcontroller pin
function select
R56
LIN
R59
LIN
R60
LIN
R61
LIN
R62
CAN
Option Link Settings
Fitted
Connects External 3V3
(CON_3V3) to Board_VCC
Supply to microcontroller
Connects Board_VCC supply
to SW2, 3 and LED0-3
Connects SW1 to INT0 Input
Disables RS232 Serial
Transceiver
Connects RS232 port to
Programming SCI port
Connects RS232 port to
Programming SCI port
Enables E8a Connection
Connects microcontroller pin
28 to IRQ1
Connects microcontroller pin
28 to IO_6
Connects microcontroller pin
29 to IRQ2
Connects microcontroller pin
28 to IO_7
Connects microcontroller pin
27 to IRQ0
Connects microcontroller pin
27 to TRIGa
For Master Mode
Connects microcontroller pin
22 to LIN-NSLP
Connects microcontroller pin
23 to LIN-RXD0
Connects microcontroller pin
23 to LIN-TXD0
Do not use CAN function,
R8C/25 Microcontroller do not
have CAN function
10
Alternative (Removed)
External 3V3 disconnected
from Board_VCC
Fit Low ohm resister to
measure current
Board_VCC disconnected from
SW2, 3 and LED0-3
Disconnected
Enables RS232 Serial
Transceiver
Disconnected
Disconnected
Do not connect a option
resister
MUST be removed if R51 fitted
Should be removed if R50
fitted
MUST be removed if R53 fitted
Should be removed if R52
fitted
MUST be removed if R55 fitted
Should be removed if R54
fitted
For Slave Mode
Disconnected
Disconnected
Disconnected
Do not use CAN function,
R8C/25 Microcontroller do not
have CAN function
Related To
R20, R21
R45, R46
R44, R46
R44, R45
R51
R50
R53
R52
R55
R54
R59, R60, R61
R56, R60, R61
R56, R59, R61
R56, R59, R60
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