Datasheet

M16C/62P Group (M16C/62P, M16C/62PT) 1. Overview
Rev.2.41 Jan 10, 2006 Page 28 of 96
REJ03B0001-0241
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 1.20 Pin Description (80-pin Version) (1)
(1)
Signal Name Pin Name I/O
Type
Power
Supply
Description
Power supply
input
VCC1, VSS I − Apply 2.7 to 5.5 V to the VCC1 pin and 0 V to the VSS pin.
(1, 2)
Analog power
supply input
AVCC
AVSS
I VCC1 Applies the power supply for the A/D converter. Connect the
AVCC pin to VCC1. Connect the AVSS pin to VSS.
Reset input
RESET
IVCC1 The microcomputer is in a reset state when applying “L” to the this pin.
CNVSS CNVSS
(BYTE)
IVCC1 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 microprocessor mode. As for the BYTE pin of the 80-pin
versions, pull-up processing is performed within the microcomputer.
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
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.
NMI
interrupt
input
NMI
I
VCC1 Input pin for the NMI interrupt.
Key input
interrupt input
KI0 to KI3
I VCC1 Input pins for the key input interrupt.
Timer A TA0OUT,
TA3OUT,
TA4OUT
I/O VCC1 These are Timer A0,Timer A3 and Timer A4 I/O pins. (however,
output of TA0OUT for the N-channel open drain output.)
TA0IN, TA3IN,
TA4IN
I VCC1 These are Timer A0, Timer A3 and Timer A4 input pins.
ZP I VCC1 Input pin for the Z-phase.
Timer B TB0IN, TB2IN
to TB5IN
I VCC1 These are Timer B0, Timer B2 to Timer B5 input pins.
Serial interface
CTS0
to CTS1
I VCC1 These are send control input pins.
RTS0
to RTS1
O VCC1 These are receive control output pins.
CLK0, CLK1,
CLK3, CLK4
I/O VCC1 These are transfer clock I/O pins.
RXD0 to RXD2 I VCC1 These are serial data input pins.
SIN4 I VCC1 This is serial data input pin.
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.
I
2
C 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.)