M16C6S Datasheet, PDF (8/196 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

M16C/6S Group
Overview
Table 1.1.4 Pin Description (1)
Pin name Signal name I/O type
Function
VCC, VSS Power supply
input
Apply 3.0V to 3.6V to the VCC pin.
Apply 0V to the VSS pin.
CNVSS
CNVSS
Input
This is a pin for changing flash memory mode. Usually, connect to VSS.
RESET
XIN
XOUT
Reset input Input
Clock input Input
Clock output Output
“L” on this input resets 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.
VCCA
Analog power
supply input
This pin is a power supply input of analog circuit. Connect to VCC.
VSSA
Analog power
supply input
This pin is a power supply input of analog circuit. Connect to VSS.
GND/TST Input for test Input
This is input pin for test. Connect to VSS.
P15
VCC25
P60 to P67
P70, P71,
P73, P74,
P76
I/O port P1 Input/output This is an 1-bit I/O port equivalent to P6. By choosing by the program,
it functions as an input pin of INT interrupt.
Power supply
It is the 2.5V power supply pin which is carrying out internal generating.
Connect VCC25 two pins each other and add stabilization capacity.
I/O port P6 Input/output This is the 8-bit I/O port of CMOS. It has a direction register for choosing I/O, and is
made for every pin in an input port or an output port. An input port can choose the
existence of pull-up resistance in a 4-bit unit by the program. It functions as an I/O pin
of what is chosen by the program which are therefore UART0 and UART1.
I/O port P7
Input/output It is an I/O port with a function equivalent to P6 (however, P70 N channel open-drain
output). By choosing by the program, it functions as an I/O pin of timers A0 to A3.
Moreover, P70 to P73 function also as an I/O pin of UART2.
P80, P81,
P83, P84,
P85
I/O port P8
Input/output P80, P81, P83, and P84 are I/O ports with a function equivalent to P6.
By choosing by the program, P80 to P81 function as an I/O pin of timer A4,
and P83 to P84 functions as an input pin of INT interruption.
Input port
P85
Input
P85 is a port with the common use only for inputs. Pull-up resistance cannot set up
this pin. This pin must be pulled-up externally to Vcc, and be fixed to “H”.
P90 to P92
TS
P10
P11
P40
P41
P42
P53
P54
P56
P82
P95
P96
P97
I/O port P9 Input/output It is an I/O port with a function equivalent to P6. It functions as an I/O pin of SILO3 by
choosing by the program.
Output port Output
TS
This is the pin with which IT800 controls ON/OFF of an output to the external
transmission AMP at the time of power line communication.
Inner port P10 keep Input Port for IT800 Testing. Please set Direction Register PD1_0 “0” for keeping Input.
Inner port P11 keep Input Port for AFE Testing. Please set Direction Register PD1_1 “0” for keeping Input.
Inner port
P40
Inner port
P41
Output to
IT800
Input from
IT800
I/O Port for communication between M16C Core and IT800 Modem. Please set
Direction Register PD4_0 “1” to Output a signal to IT800. The output signal is
connected to TXnRX of IT800 inside of chip.
I/O Port for communication between M16C Core and IT800 Modem (Note.1).
Please set Direction Register PD4_1 “0” to Input a signal from IT800. The TS signal is
input from IT800 inside of chip.
Inner port
P42
Output to
IT800
I/O Port for communication between M16C Core and IT800 Modem. Please set
Direction Register PD4_2 “1” to Output a signal to IT800. The output signal is
connected to CLR of IT800 inside of chip.
Inner port
P53
Input from
IT800
I/O Port for communication between M16C Core and IT800 Modem (Note.1).
Please set Direction Register PD5_3 “0” to Input a signal from IT800. The nCD0
signal is input from IT800 inside of chip.
Inner port
P54
Input from
IT800
I/O Port for communication between M16C Core and IT800 Modem (Note.1).
Please set Direction Register PD5_4 “0” to Input a signal from IT800. The nCD1
signal is input from IT800 inside of chip.
Inner port
P56
Inner port
P82
Output to
IT800
Input from
IT800
I/O Port for communication between M16C Core and IT800 Modem. Please set
Direction Register PD5_6 “1” to Output a signal to IT800. The output signal is
connected to nPHY_RES of IT800 inside of chip.
I/O Port for communication between M16C Core and IT800 Modem (Note.1).
nINT signal of IT800 is connected to this port inside of chip for carrying out Interrupt
function by software.
Inner port
P95
Output to
IT800
I/O Port for communication between M16C Core and IT800 Modem. This port is
connected to DCLK signal of IT800 inside of chip as SILO4 CLK4 functional Output
port by choosing by the program.
Inner port
P96
Inner port
P97
Output to
IT800
Input from
IT800
I/O Port for communication between M16C Core and IT800 Modem. This port is
connected to DI signal of IT800 inside of chip as SILO4 SOUT4 functional Output port
by choosing by the program.
I/O Port for communication between M16C Core and IT800 Modem. This port is
connected to DI signal of IT800 inside of chip as SILO4 SOUT4 functional Input port
by choosing by the program.
NOTES:
1. In case of Direction Register “1”, any signal is not output from M16C to assigned signal of IT800 .
Refer to Programmable I/O Ports pages.
2. Ask the oscillator maker the oscillation characteristic.
Rev.4.00 Aug 05, 2005 page 8 of 190
REJ03B0014-0400