M16CSLASH62 datasheet(24/621 Pages) RENESAS

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Pin Description

Mitsubishi microcomputers

M16C / 62 Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

VCC, VSS

CNVSS

XIN

XOUT

BYTE

AVCC

AVSS

VREF

P00 to P07

D0 to D7

P10 to P17

D8 to D15

P20 to P27

A0 to A7

A0/D0 to

A7/D7

A0, A1/D0

to A7/D6

P30 to P37

A8 to A15

A8/D7,

A9 to A15

P40 to P47

Signal name

Power supply

input

CNVSS

Reset input

Clock input

Clock output

External data

bus width

select input

Analog power

supply input

Reference

voltage input

I/O port P0

I/O port P1

I/O port P2

I/O port P3

I/O port P4

Supply 2.7 to 5.5 V to the VCC pin. Supply 0 V to the VSS pin.

Function

This pin switches between processor modes. Connect this pin to the

VSS pin when after a reset you want to start operation in single-chip

mode (memory expansion mode) or the VCC pin when starting

operation in microprocessor mode.

A “L” on this input resets the microcomputer.

These pins are provided for the main clock generating circuit.Connect

a ceramic resonator or crystal between the XIN and the XOUT pins. To

use an externally derived clock, input it to the XIN pin and leave the

XOUT pin open.

This pin selects the width of an external data bus. A 16-bit width is

selected when this input is “L”; an 8-bit width is selected when this

input is “H”. This input must be fixed to either “H” or “L”. Connect this

pin to the VSS pin when not using external data bus.

This pin is a power supply input for the A-D converter. Connect this

pin to VCC.

This pin is a power supply input for the A-D converter. Connect this

pin to VSS.

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

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

individually. When used for input in single-chip mode, the port can be

set to have or not have a pull-up resistor in units of four bits by

software. In memory expansion and microprocessor modes, selection

of the internal pull-resistor is not available.

When set as a separate bus, these pins input and output data (D0–D7).

This is an 8-bit I/O port equivalent to P0. Pins in this port also function

as external interrupt pins as selected by software.

When set as a separate bus, these pins input and output data (D8–D15).

This is an 8-bit I/O port equivalent to P0.

These pins output 8 low-order address bits (A0–A7).

If the external bus is set as an 8-bit wide multiplexed bus, these pins

input and output data (D0–D7) and output 8 low-order address bits

(A0–A7) separated in time by multiplexing.

If the external bus is set as a 16-bit wide multiplexed bus, these pins

input and output data (D0–D6) and output address (A1–A7) separated

in time by multiplexing. They also output address (A0).

This is an 8-bit I/O port equivalent to P0.

These pins output 8 middle-order address bits (A8–A15).

If the external bus is set as a 16-bit wide multiplexed bus, these pins

input and output data (D7) and output address (A8) separated in time

by multiplexing. They also output address (A9–A15).

This is an 8-bit I/O port equivalent to P0.

Pin name

Input

Output

Input

Input/output

I/O type

Analog power

supply input

Input/output

Output

Input/output

Output

Input/output

Output

Input/output

Output

Input/output

Output

CS0 to CS3,

A16 to A19

These pins output CS0–CS3 signals and A16–A19. CS0–CS3 are chip

select signals used to specify an access space. A16–A19 are 4 high-

order address bits.

RESET

Pin Description

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