M16C1N datasheet(18/238 Pages) RENESAS

18 / 238 page

Rev.1.00

Oct 20, 2004

page 6 of 222

M16C/1N Group

1. Overview

REJ09B0007-0100Z

VCC, VSS

CNVSS

XIN

VREF

P00 to P07

P10 to P17

P30 to P37

P40 to P47

Signal name

Power supply

input

CNVSS

Reset input

Clock input

Reference

voltage input

I/O port P0

I/O port P1

I/O port P3

I/O port P4

Function

Pin name

Input

XOUT

Clock output

Output

Input

Input/output

I/O type

Input/output

RESET

P20 to P21

IVCC

I/O port P2

Input/output

P50 to P52

I/O port P5

Input/output

This is an 8-bit CMOS I/O port. It has an input/output port

direction register that allows the user to set each pin for input or

output individually. When set for input, the user can specify in

units of four bits via software whether or not they are tied to a

pull-up resistor. These pins are shared with analog input pins.

P02 and P03 function as CAN0 I/O pins by using software.

This is a 3-bit I/O port equivalent to P0. P50 and P51 function as

CAN0 I/O pins by using software.

Supply 4.2 to 5.5 V to the VCC pin. Supply 0 V to the VSS pin.

Connect a capacitor (0.1

µF) between this pin and VSS.

A "L" on this input resets the microcomputer.

This is a 2-bit I/O port equivalent to P0.

This pin is a reference voltage input for the A/D converter.

This is an 8-bit I/O port equivalent to P0. P10 to P13 are shared

with analog inputs and key input interrupts. P14 to P16 are

shared with serial I/O pins. P17 is shared with timer input. Can

be used as an LED drive port.

This is a 8-bit I/O port equivalent to P0. P40 to 41 are shared

with analog inputs. P42 to P45 are shared with interrupt inputs.

P46 to P47 are shared with the I/O pin of the clock oscillation

circuit for the clock.

This is a 8-bit I/O port equivalent to P0. P30 to P33 are shared

with timer input/output. P34 to P37 are shared with serial I/O.

P34 is shared with analog outputs.

These pins are provided for the main clock oscillation circuit.

Connect a ceramic resonator or crystal between the XIN and

XOUT pins. To use an externally derived clock, input it to the XIN

pin and leave the XOUT pin open.

Connect it to the VSS pin via resistance (about 5 k

Ω).

1.6 Pin Description

Table 1.3 shows the pin description.

Table 1.3 Pin Description

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

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