Renesas M16C FAMILY 用户手册

5 Using the KD 

1) UART pins (TxDi, RxDi) 

The UARTi transmit and receive interrupts are used for communication between the 
USB Monitor Board and host computer (PC). Make sure that UARTi is not used in the 
User Program. Do not connect the UART pins with other pins. 
 
UART1 use prohibition MCUs 

R8C/10 Group, R8C/11 Group, R8C/12 Group, R8C/13 Group, M32C/80 Series 
M16C/80 Group, M16C/Tiny Series, M16C/24(M30245) Group, M16C/62A(M) Group 
M16C/62P Group, M16C/62N(M3062GF8) Group, M16C/6N Group 

M16C/10 Group, M16C/1N Group 

 

2) Set up "0FF900h" or ”0FFF900h” in the UARTi receive with User Program because 

UARTi is being used for the communication with KD30 and KD3083. The interruption of 
relocatable vector table (variable vecter table) except for UARTi can be used with User 
Program. 
 
UART1 receive interrupt setting required MCUs (0FF900h address) 

M16C/62A(M) Group, M16C/6N(M306NAFG, M306NBFC only) Group 
M16C/24(M30245) Group 

M16C/10 Group, M16C/1N Group 

M16C/80 Group 

 

Note: Setting the UARTi receive interrupt is not necessary for MCUs other than the 

above MCU. 

 

FoUSB debug formula is a monitor program formula. The monitor program debugs by 

communicating with FoUSB. A use program is interrupted at the time of command 

execution, and a monitor program is executed. A monitor program is written in flash 

memory user ROM area when a debugger (KD30 and KD3083) is started. 

The monitor program has the following functions. 

    1) A function which communicates with FoUSB. 

    2) A function which executes command. 

Next, the differences between the realization method of these functions and CPU 

operation are described. 

 

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