M16C/62 Group (M16C/62P, M16C/62PT)
1. Overview
Table 1.12 Pin Description (80-pin Version) (1)
Power
supply
Signal name
Pin name I/O type
Description
Power supply input VCC1,
VSS
I
I
-
Apply 2.7 to 5.5 V to the VCC1 pin and 0 V to the VSS pin. (2)
Analog power
supply input
Reset input
CNVSS
AVCC,
VCC1
Applies the power supply for the A-D converter. Connect the AVCC pin to
VCC1. Connect the AVSS pin to VSS.
AVSS
____________
RESET
CNVSS
(BYTE)
I
I
VCC1
VCC1
The microcomputer is in a reset state when applying "L" to the this pin.
Switches processor mode. Connect this pin to VSS to when after a reset to
start up in single-chip mode. Connect this pin to VCC1 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.
Main clock input
Main clock output
XIN
I
VCC1
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.
XOUT
O
Sub clock input
Sub clock output
XCIN
I
VCC1
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.
XCOUT
O
Clock output
CLKOUT
O
I
VCC2
VCC1
VCC1
VCC1
The clock of the same cycle as fC, f8, or f32 is outputted.
Input pins for the _I_N__T__ interrupt
______
________
INT interrupt input INT0 to _I_N__T__2__
_______
_______
NMI interrupt input NMI
I
Input pin for the _N__M___I_ interrupt.
Key input interrupt KI0 to _K__I_3__
I
Input pins for the key input interrupt
______
input
Timer A
TA0OUT,
TA3OUT,
TA4OUT
TA0IN,
TA3IN,
TA4IN
I/O
I
VCC1
VCC1
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.
ZP
I
I
VCC1
VCC1
Input pin for the Z-phase.
Timer B
TB0IN,
These are timer B0, timer B2 to timer B5 input pins.
TB2IN to TB5IN
_________ _________
Serial I/O
CTS0, CTS2
I
VCC1
VCC1
VCC1
These are send control input pins.
These are receive control output pins.
These are transfer clock I/O pins.
_________ _________
RTS0, RTS2
CLK0, CLK1,
CLK3, CLK4
RXD0 to RXD2
SIN4
O
I/O
I
I
VCC1
VCC1
VCC1
These are serial data input pins.
These are serial data input pins.
TXD0 to TXD4
O
These are serial data output pins. (except TXD2 for the N-channel open drain
output.)
SOUT3, SOUT4
CLKS1
O
O
VCC1
VCC1
VCC1
These are serial data output pins.
This is output pin for transfer clock output from multiple pins function.
I2C mode
SDA0 to SDA2
I/O
These are serial data I/O pins. (except SDA2 for the N-channel open drain
output.)
SCL0 to SCL2
I/O
VCC1
These are transfer clock I/O pins. (except SCL2 for the N-channel open drain
output.)
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.
page 19
Rev.2.10 Nov. 07, 2003
of 84
RENESAS [ RENESAS TECHNOLOGY CORP ]
