Pin Description - Renesas M16C FAMILY Hardware Manual

Under development
Preliminary specification
Specifications in this manual are tentative and subject to change.
R8C/11 Group

1.6 Pin Description

Table 1.3 shows the pin description
Table 1.3 Pin description
Signal name
Power supply Vcc,
input Vss
IVcc IVcc
Analog power AVcc, AVss
supply input
___________
Reset input RESET
CNVss CNVss
MODE MODE
Main clock input X
Main clock output X
_____ _______
INT interrupt input INT
_____
Key input interrupt KI
input
Timer X CNTR
__________
CNTR
Timer Y CNTR
Timer Z TZ
Timer C TC
CMP0
CMP1
Serial interface CLK
RxD
TxD
TxD
Reference voltage V
input
A-D converter AN
I/O port P0
P1
P3
P4
Input port P4
Rev.0.91 2003 Sep 08
Pin name I/O type
Input
Output
Input
Input
Input
Input
Input
IN
Output
OUT
_______
to INT Input
0 3
_____
to KI Input
0 3
Input/Output
0
Output
0
Input/Output
1
Output
OUT
Input
IN
to CMP0 , Output
0 3
to CMP1
0 3
Input/Output
0
, RxD Input
0 1
, TxD , Output
0 10
11
Input
REF
to AN Input
0 11
to P0 , Input/Output
0 7
to P1 ,
0 7
to P3 , P3 ,
0 3 7
5
, P4 Input
6 7
page 6 of 184
Function
Apply 2.7 V to 5.5 V to the Vcc pin. Apply 0 V to the
Vss pin.
Connect this pin to Vss via a capacitor (0.1 µF).
These are power supply input pins for A-D converter.
Connect the AVss pin to Vss. Connect a capacitor
between pins AVcc and AVss.
"L" on this input resets the MCU.
Connect this pin to Vss via a resistor (approximately 5 kΩ).
Connect this pin to Vcc via a resistor (approximately 5 kΩ).
These pins are provided for the main clock generat-
ing circuit input/output. Connect a ceramic resonator
or a crystal oscillator between the X
To use an externally derived clock, input it to the X
pin and leave the X
OUT
______
These are INT interrupt input pins.
These are key input interrupt input pins.
This is the timer X I/O pin.
This is the timer X output pin.
This is the timer Y I/O pin.
This is the timer Z output pin.
This is the timer C input pin.
These are the timer C output pins.
This is a transfer clock I/O pin.
These are serial data input pins.
These are serial data output pins.
This is a reference voltage input pin for A-D con-
verter.
These are analog input pins for A-D converter.
These are 8-bit CMOS I/O ports. Each port has an
input/output select direction register, allowing each
pin in that port to be directed for input or output indi-
vidually.
Any port set to input can select whether to use a pull-
up resistor or not by program.
P1 to P1 also function as LED drive ports.
0 7
These are input only pins.
1. Overview
and X
IN OUT
pin open.
pins.
IN