M30620FCAFP datasheet(171/274 Pages) MITSUBISHI

171 / 274 page

Mitsubishi microcomputers

M16C / 62A Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Programmable I/O Port

171

Pin name

Connection

Ports P0 to P10

(excluding P85)

XOUT (Note)

AVSS, VREF, BYTE

AVCC

After setting for input mode, connect every pin to VSS via a resistor

(pull-down); or after setting for output mode, leave these pins open.

Open

Connect to VCC

Connect to VSS

Note: With external clock input to XIN pin.

NMI

Connect via resistor to VCC (pull-up)

Table 1.20.1. Example connection of unused pins in single-chip mode

Pin name

Connection

Ports P6 to P10

(excluding P85)

AVSS, VREF

AVCC

After setting for input mode, connect every pin to VSS via a resistor

(pull-down); or after setting for output mode, leave these pins open.

Open

Connect to VCC

Connect to VSS

Note 1: With external clock input to XIN pin.

Note 2: When the BCLK output disable bit (bit 7 at address 000416) is set to “1”, connect to VCC via a resistor (pull-up).

HOLD, RDY, NMI

Connect via resistor to VCC (pull-up)

BHE, ALE, HLDA,

XOUT (Note 1), BCLK (Note 2)

P45 / CS1 to P47 / CS3

Set ports to input mode, set output enable bits of CS1 through CS3 to

0, and connect to Vcc via resistors (pull-up).

Figure 1.20.10. Example connection of unused pins

Port P0 to P10 (except for P85)

(Input mode)

(Output mode)

NMI

XOUT

AVCC

BYTE

AVSS

VREF

Microcomputer

VCC

VSS

In single-chip mode

Port P6 to P10 (except for P85)

(Input mode)

(Output mode)

NMI

XOUT

AVCC

AVSS

VREF

Open

Microcomputer

VCC

VSS

In memory expansion mode or

in microprocessor mode

HOLD

RDY

ALE

BCLK (Note)

BHE

HLDA

Open

Port P45 / CS1

to P47 / CS3

Note : When the BCLK output disable bit (bit 7 at address 000416) is set to “1”, connect to VCC via a resistor (pull-up).

Table 1.20.2. Example connection of unused pins in memory expansion mode and microprocessor mode

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