
M16C/62 Group (M16C/62P, M16C/62PT)
4
8
f
3
0
0
2
,
0
.
o
N
0
1
e
R
page 19
1. Overview
Apply 2.7 to 5.5 V to the VCC1 pin and 0 V to the VSS pin.
(2)
Applies the power supply for the A-D converter. Connect the AVCC pin to
VCC1. Connect the AVSS pin to VSS.
The microcomputer is in a reset state when applying "L" to the this pin.
Switches processor mode. Connect this pin to V
SS
to when after a reset to
start up in single-chip mode. Connect this pin to V
CC1
to start up in micropro-
cessor mode. As for the BYTE pin of the 80-pin versions, pull-up processing
is performed within the microcomputer.
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.
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.
The clock of the same cycle as fC, f8, or f32 is outputted.
Input pins for the INT interrupt
Input pin for the NMI interrupt.
Input pins for the key input interrupt
These are timer A0, timer A3 and Timer A4 I/O pins. (except the output of
TAOUT for the N-channel open drain output.)
These are timer A0, timer A3 and Timer A4 input pins.
Input pin for the Z-phase.
These are timer B0, timer B2 to timer B5 input pins.
These are send control input pins.
These are receive control output pins.
These are transfer clock I/O pins.
These are serial data input pins.
These are serial data input pins.
These are serial data output pins. (except TXD2 for the N-channel open drain
output.)
These are serial data output pins.
This is output pin for transfer clock output from multiple pins function.
These are serial data I/O pins. (except SDA2 for the N-channel open drain
output.)
These are transfer clock I/O pins. (except SCL2 for the N-channel open drain
output.)
VCC1,
VSS
AVCC,
RESET
CNVSS
(BYTE)
XIN
XOUT
XCIN
XCOUT
_______
______
________
______
TA0OUT,
TA3OUT,
TA4OUT
TA0IN,
TA3IN,
TA4IN
ZP
TB0IN,
RTS0, RTS2
CLK0, CLK1,
CLK3, CLK4
RXD0 to RXD2
SIN4
TXD0 to TXD4
SOUT3, SOUT4
CLKS1
SDA0 to SDA2
SCL0 to SCL2
Power supply input
Analog power
supply input
Reset input
CNVSS
Main clock input
Main clock output
Sub clock input
Sub clock output
NMI interrupt input
Key input interrupt
input
Timer A
Timer B
Serial I/O
I
2
C mode
I
I
I
I
I
O
I
O
O
I
I
I
I/O
I
I
I
I
O
I/O
I
I
O
O
O
I/O
I/O
-
VCC1
VCC1
VCC1
VCC1
VCC1
VCC1
VCC1
VCC2
VCC1
VCC1
VCC1
VCC1
VCC1
VCC1
VCC1
VCC1
VCC1
VCC1
VCC1
VCC1
VCC1
VCC1
VCC1
VCC1
VCC1
Power
supply
Signal name Pin name
I/O type
Description
I : Input O : Output I/O : Input and output
NOTES:
1. In this manual, hereafter, VCC refers to VCC1 unless otherwise noted.
2. In M16C/62PT, apply 4.0 to 5.5 V to the VCC1 pin.
3. Ask the oscillator maker the oscillation characteristic.
Table 1.12 Pin Description (80-pin Version) (1)