M30612SAA-XXXFS Просмотр технического описания (PDF) - Mitsumi

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M30612SAA-XXXFS

Single chip 16-bit CMOS microcomputer. ROM 128K bytes, RAM 10K bytes

Mitsumi 

Pin Description

Mitsubishi microcomputers

M16C / 61 Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Pin Description

Pin name

VCC, VSS

CNVSS

Signal name

I/O type

Power supply

input

CNVSS

Input

Function

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

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.

RESET

Reset input Input

A “L” on this input resets the microcomputer.

XIN

XOUT

Clock input

Clock output

Input

Output

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.

BYTE

AVCC

AVSS

External data Input

bus width

select input

Analog power

supply input

Analog power

supply input

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

pin to VSS.

VREF

P00 to P07

D0 to D7

P10 to P17

Reference

voltage input

I/O port P0

I/O port P1

Input

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

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 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.

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

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

D8 to D15

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

P20 to P27 I/O port P2 Input/output This is an 8-bit I/O port equivalent to P0.

A0 to A7

Output

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

A0/D0 to

A7/D7

A0, A1/D0

to A7/D6

Input/output 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.

Output

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

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

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

P30 to P37 I/O port P3 Input/output This is an 8-bit I/O port equivalent to P0.

A8 to A15

A8/D7,

A9 to A15

P40 to P47 I/O port P4

CS0 to CS3,

A16 to A19

Output

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

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

Output

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

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

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

Output

Output

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.

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