M16CSLASH62P datasheet(10/349 Pages) MITSUBISHI

10 / 349 page

Overview

Mitsubishi microcomputers

M16C / 62P Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Under

development

Preliminary Specifications Rev.1.0

Specifications in this manual are tentative and subject to change.

VCC1, VCC2,

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

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

Apply 2.7V to 5.5 V to the VCC1 and VCC2 pins and 0 V to the VSS

pin. The Vcc apply condition is that VCC2

≤ VCC1

Function

This pin switches between processor modes. Connect this pin to

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

chip mode (memory expansion mode) or the VCC1 pin when

starting operation in microprocessor mode.

“L” on this input resets the microcomputer.

These pins are provided for the main clock generating circuit input/

output. 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 operating in single-chip mode.

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

this pin to VCC1.

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. This port has an input/output select

direction register, allowing each pin in that port to be directed for

input or output individually.

If any port is set for input, selection can be made for it in a program

whether or not to have a pull-up resistor in 4 bit units. This selection

is unavailable in memory extension and microprocessor modes.

This port can function as input pins for the A-D converter when so

selected in a program.

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. P15 to P17 also function

as INT interrupt input pins as selected by a program.

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. This port can function as

input pins for the A-D converter when so selected in a program.

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

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

pins input and output data (D0 to D7) and output 8 low-order

address bits (A0 to 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 to D6) and output address (A1 to 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 to 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

to 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

A16 to A19,

CS0 to CS3

These pins output A16 to A19 and CS0 to CS3 signals. A16 to A19

are 4 high- order address bits. CS0 to CS3 are chip select signals

used to specify an access space.

RESET

(Note)

Power supply

VCC1

VCC2

VCC1

VCC2

Table 1.1.4 Pin Description (100-pin and 128-pin Packages) (Continued)

Note: In this manual, hereafter, VCC refers to VCC1 unless otherwise noted.

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