Renesas rl78 Manual Do Utilizador

 

RL78/G1A 

 

CHAPTER  2   PIN  FUNCTIONS 

 

(1/2) 

Function Name 

I/O 

Function 

ANI0 to ANI12, ANI16 to ANI30 

Input 

A/D converter analog input (see Figure 11-44  Analog Input Pin Connection)

 

INTP0 to INTP11 

Input 

External interrupt request input 

The valid edge can be specified :  Rising edge, falling edge, or both rising and 

falling edges) 

 

KR0 to KR9 

Input 

Key interrupt input

 

PCLBUZ0, PCLBUZ1 

Output 

Clock output/buzzer output

 

REGC 

− 

Pin for connecting regulator output stabilization capacitance for internal operation. 

Connect this pin to V

SS

 via a capacitor (0.47 to 1 

μF). 

Also, use a capacitor with good characteristics, since it is used to stabilize internal 

voltage.  

RTC1HZ Output 

Real-time 

clock 

correction clock (1 Hz) output 

RESET Input 

This is the active-low system reset input pin. 

When the external reset is not used, connect this pin directly or via a resistor to V

DD

.

RxD0 to RxD2 

Input 

Serial data input pins of serial interface UART0, UART1, and UART2 

TxD0 to TxD2 

Output 

Serial data output pins of serial interface UART0, UART1, and UART2 

SCK00, SCK01, SCK10, SCK11, 

SCK20, SCK21 

I/O 

Serial clock I/O pins of serial interface CSI00, CSI01, CSI10, CSI11, CSI20, and 

CSI21

  

SCL00, SCL01, SCL10, SCL11, 

SCL20, SCL21  

Output

 

Serial clock output pins of serial interface IIC00, IIC01, IIC10, IIC11, IIC20, and 

IIC21  

SDA00, SDA01, SDA10, SDA11, 

SDA20, SDA21 

I/O

 

Serial data I/O pins of serial interface IIC00, IIC01, IIC10, IIC11, IIC20, and IIC21  

SI00, SI01, SI10, SI11, SI20, SI21 

Input 

Serial data input pins of serial interface CSI00, CSI01, CSI10, CSI11, CSI20, and 

CSI21

  

SO00, SO01, SO10, SO11, SO20, 

SO21 

Output 

Serial data output pins of serial interface CSI00, CSI01, CSI10, CSI11, CSI20, and 

CSI21  

SCLA0 I/O

 

Serial clock I/O pins of serial interface IICA0 

SDAA0 I/O

 

Serial data I/O pins of serial interface IICA0 

TI00, TI01, TI03 to TI07 

Input

 

The pins for inputting an external count clock/capture trigger to 16-bit timers 00, 01, 

and 03 to 07 

TO00, TO01, TO03 to TO07 

Output 

Timer output pins of 16-bit timers 00, 01, and 03 to 07 

X1, X2 

− 

Resonator connection for main system clock 

EXCLK Input 

External 

clock 

input for main system clock 

XT1, XT2 

− 

Resonator connection for subsystem clock 

EXCLKS 

Input 

External clock input for subsystem clock 

<R> 

 

R01UH0305EJ0200  Rev.2.00 

 

 

33  

Jul 04, 2013