Datasheet
R01DS0033EJ0220 Rev.2.20 Page 22 of 115
Nov 01, 2012
M16C/63 Group 1. Overview
Note:
1. TXD2, SDA2, and SCL2 are N-channel open drain output pins. TXDi (i = 0, 1, 5), SDAi, and SCLi can be
selected as CMOS output pins or N-channel open drain output pins.
Table 1.14 Pin Functions for the 80-Pin Package (2/2)
Signal Name Pin Name I/O
Power
Supply
Description
Serial interface
UART0 to UART2,
UART5
CTS0, CTS1,
CTS5
I VCC1 Input pins to control data transmission
RTS0, RTS1,
RTS5
O VCC1 Output pins to control data reception
CLK0, CLK1,
CLK5
I/O VCC1 Transmit/receive clock I/O.
RXD0 to RXD2,
RXD5
I VCC1 Serial data input.
TXD0 to TXD2,
TXD5
O VCC1
Serial data output.
(1)
CLKS1 O VCC1
Output for the transmit/receive clock multiple-pin output
function.
UART0 to UART2,
UART5
I
2
C mode
SDA0 to SDA2,
SDA5
I/O VCC1 Serial data I/O.
SCL0 to SCL2,
SCL5
I/O VCC1 Transmit/receive clock I/O.
Serial interface
SI/O3, SI/O4
CLK3, CLK4 I/O VCC1 Transmit/receive clock I/O.
SIN4 I VCC1 Serial data input.
SOUT3, SOUT4 O VCC1 Serial data output.
Multi-master I
2
C-bus
interface
SDAMM I/O VCC1 Serial data I/O (N-channel open drain output).
SCLMM I/O VCC1 Transmit/receive clock I/O (N-channel open drain output).
CEC I/O CEC I/O VCC1 CEC I/O (N-channel open drain output).
Reference voltage
input
VREF I VCC1 Reference voltage input for the A/D and D/A converters.
A/D converter
AN0 to AN7 I VCC1
Analog input.
AN0_0 to AN0_7
AN2_0 to AN2_7
I VCC1
ADTRG I VCC1 External trigger input.
ANEX0, ANEX1 I VCC1 Extended analog input.
D/A converter DA0, DA1 O VCC1 Output for the D/A converter.
I/O ports
P0_0 to P0_7
P2_0 to P2_7
P3_0 to P3_7
P5_0 to P5_7
P6_0 to P6_7
P8_0 to P8_7
P10_0 to P10_7
I/O VCC1
8-bit CMOS I/O ports. A direction register determines
whether each pin is used as an input port or an output
port. A pull-up resistor may be enabled or disabled for
input ports in 4-bit units. P8_5 is N-channel open drain
output port. No pull-up resistor is provided. P8_5 is an
input port for verifying the
NMI pin level and shares a pin
with
NMI.
P4_0 to P4_3
P7_0, P7_1
P7_6, P7_7
P9_0,
P9_2 to P9_7
I/O VCC1
I/O ports having equivalent functions to P0. However,
P7_0 and P7_1 are N-channel open drain output ports.
No pull-up resistor is provided.