Datasheet

R8C/L35C Group, R8C/L36C Group, R8C/L38C Group, R8C/L3AC Group 1. Overview
R01DS0095EJ0101 Rev.1.01 Page 23 of 72
Apr 15, 2011
1.5 Pin Functions
Tables 1.14 and 1.15 list Pin Functions for R8C/L3AC Group.
I: Input O: Output I/O: Input and output
Note:
1. Contact the oscillator manufacturer for oscillation characteristics.
Table 1.14 Pin Functions for R8C/L3AC Group (1)
Item Pin Name
I/O Type
Description
Power supply input VCC, VSS Apply 1.8 V to 5.5 V to the VCC pin.
Apply 0 V to the VSS pin.
Analog power
supply input
AVCC, AVSS Power supply for the A/D converter.
Connect a capacitor between AVCC and AVSS.
Reset input RESET
I Driving this pin low resets the MCU.
MODE MODE I Connect this pin to VCC via a resistor.
Power-off mode exit
input
WKUP0
I This pin is provided for input to exit the mode used in power-off
mode. Connect to VSS when not using power-off mode.
XIN clock input XIN I These pins are provided for XIN clock generation circuit I/O.
Connect a ceramic oscillator or a crystal oscillator between pins
XIN and XOUT.
(1)
To use an external clock, input it to the XIN
pin and leave the XOUT pin open.
XIN clock output XOUT O
XCIN clock input XCIN I These pins are provided for XCIN clock generation circuit I/O.
Connect a crystal oscillator between pins XCIN and XCOUT.
(1)
To use an external clock, input it to the XCIN pin and leave the
XCOUT pin open.
XCIN clock output XCOUT O
INT
interrupt input INT0 to INT7 IINT interrupt input pins.
Key input interrupt
KI0
to KI7
I Key input interrupt input pins
Timer RA TRAIO I/O Timer RA I/O pin
TRAO O Timer RA output pin
Timer RB TRBO O Timer RB output pin
Timer RC TRCCLK I External clock input pin
TRCTRG I External trigger input pin
TRCIOA, TRCIOB,
TRCIOC, TRCIOD
I/O Timer RC I/O pins
Timer RD TRDIOA0, TRDIOA1,
TRDIOB0, TRDIOB1,
TRDIOC0, TRDIOC1,
TRDIOD0, TRDIOD1
I/O Timer RD I/O pins
TRDCLK I External clock input pin
Timer RE TREO O Divided clock output pin
Timer RG TRGCLKA, TRGCLKB I Timer RG input pins
TRGIOA, TRGIOB I/O Timer RG I/O pins
Serial interface CLK0, CLK1, CLK2 I/O Transfer clock I/O pins
RXD0, RXD1, RXD2 I Serial data input pins
TXD0, TXD1, TXD2 O Serial data output pins
CTS2
I Transmission control input pin
RTS2
O Reception control output pin
SCL2 I/O
I
2
C mode clock I/O pin
SDA2 I/O
I
2
C mode data I/O pin