M306V2EEFS datasheet(7/276 Pages) MITSUBISHI

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M306V2ME-XXXFP

M306V2EEFP

MITSUBISHI MICROCOMPUTERS

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER

and ON-SCREEN DISPLAY CONTROLLER

Rev. 1.0

Table 1.5.3 Pin description (1)

VCC, VSS

CNVSS

XIN

XOUT

BYTE

AVCC

P00 to P07

Signal name

Power supply

input

CNVSS

Reset input

Clock input

Clock output

External data

bus width

select input

Analog power

supply input

I/O port P0

Supply 4.5 V to 5.5 V to the VCC pin. Supply 0 V to the VSS pin.

Function

This pin switches between processor modes. Connect it to the

VSS pin when operating in single-chip or memory expansion mode.

Connect it to the VCC pin when 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.” When

operating in single-chip mode,connect this pin to VSS.

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

pin to VCC.

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

individually. When set for input in single-chip mode, the user can specify

in units of four bits via software whether or not they are tied to a pull-up

resistor. In memory expansion and microprocessor modes, the user

cannot specify that.

Pin name

Input

Output

Input

Input/output

I/O type

D0 to D7

P10 to P17

I/O port P1

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.

Input/output

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

I/O port P2

I/O port P3

I/O port P4

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.

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

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