1. Overview
I : Input
O : Output
I/O : Input and output
NOTES:
1. When use VCC1 > VCC2, contacts due to some points or restrictions to be checked.
2. This pin function in M16C/62PT cannot be used.
3. Ask the oscillator maker the oscillation characteristic.
Table 1.18
Pin Description (100-pin and 128-pin Version) (2)
Signal Name
Pin Name
I/O
Type
Power
Description
Main clock
input
XIN
I
VCC1
I/O pins for the main clock generation circuit. Connect a ceramic
resonator or crystal oscillator between XIN and XOUT
(3). To use
the external clock, input the clock from XIN and leave XOUT open.
Main clock
output
XOUT
O
VCC1
Sub clock input XCIN
I
VCC1
I/O pins for a sub clock oscillation circuit. Connect a crystal
oscillator between XCIN and XCOUT
(3). To use the external clock,
input the clock from XCIN and leave XCOUT open.
Sub clock
output
XCOUT
O
VCC1
O
VCC2
Outputs the BCLK signal.
Clock output
CLKOUT
O
VCC2
The clock of the same cycle as fC, f8, or f32 is outputted.
INT interrupt
input
INT0 to INT2
I
VCC1
Input pins for the INT interrupt.
NT3 to INT5
I
VCC2
NMI interrupt
input
NMI
I
VCC1
Input pin for the NMI interrupt. Pin states can be read by the P8_5
bit in the P8 register.
Key input
interrupt input
KI0 to KI3
I
VCC1
Input pins for the key input interrupt.
Timer A
TA0OUT to
TA4OUT
I/O
VCC1
These are timer A0 to timer A4 I/O pins. (however, output of
TA0OUT for the N-channel open drain output.)
TA0IN to
TA4IN
I
VCC1
These are timer A0 to timer A4 input pins.
ZP
I
VCC1
Input pin for the Z-phase.
Timer B
TB0IN to
TB5IN
I
VCC1
These are timer B0 to timer B5 input pins.
Three-phase
motor control
output
U, U, V, V,
W, W
O
VCC1
These are Three-phase motor control output pins.
Serial interface CTS0 to
CTS2
I
VCC1
These are send control input pins.
RTS0 to
RTS2
O
VCC1
These are receive control output pins.
CLK0 to
CLK4
I/O
VCC1
These are transfer clock I/O pins.
RXD0 to
RXD2
I
VCC1
These are serial data input pins.
SIN3, SIN4
I
VCC1
These are serial data input pins.
TXD0 to
TXD2
O
VCC1
These are serial data output pins. (however, output of TXD2 for the
N-channel open drain output.)
SOUT3,
SOUT4
O
VCC1
These are serial data output pins.
CLKS1
O
VCC1
This is output pin for transfer clock output from multiple pins
function.
I2C mode
SDA0 to
SDA2
I/O
VCC1
These are serial data I/O pins. (however, output of SDA2 for the N-
channel open drain output.)
SCL0 to
SCL2
I/O
VCC1
These are transfer clock I/O pins. (however, output of SCL2 for the
N-channel open drain output.)