M16C/30L View Datasheet(PDF) - Renesas Electronics

Part Name

Description

Manufacturer

M16C/30L

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Renesas Electronics 

Pin Description

Mitsubishi microcomputers

M16C / 30L Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Pin Description

Pin name

VCC, VSS

CNVSS

RESET

Signal name

I/O type

Power supply

input

CNVSS

Input

Reset input Input

Function

Supply 2.2V to 3.6 V to the VCC pin. Supply 0 V to the VSS pin.

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.

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”. 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.

VREF

P00 to P07

D0 to D7

P10 to P17

D8 to D15

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

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.

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.

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

P20 to P27

A0 to A7

A0/D0 to

A7/D7

I/O port P2

A0

A1/D0

to A7/D6

P30 to P37

I/O port P3

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

Output

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

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).

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

A16 to A19,

CS0 to CS3

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 A16–A19 and CS0–CS3 signals. A16–A19 are 4 high-

order address bits. CS0–CS3 are chip select signals used to specify an

access space.

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