M30622ECTFP datasheet(170/184 Pages) MITSUBISHI

170 / 184 page

170

Tentative Specifications REV.A

Mitsubishi microcomputers

M16C / 62T Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Specifications in this manual are tentative and subject to change.

Under

development

Programmable I/O Port

Pin name

Connection

Ports P0 to P10

(excluding P85) (Note 1)

XOUT (Note 2)

AVSS, VREF, BYTE

AVCC

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

resistor; or after setting for output mode, leave these pins open.

Open

Connect to VCC

Connect to VSS

Note 1: In M30623(80-pin package), P1, P44 to P47, P72 to P75, and P91 are not connected to external pin,

but exist inside microcomputer. So set these ports for output mode.

Note 2: With external clock input to XIN pin.

NMI

Connect via resistor to VCC (pull-up)

Table 1.23.1. Example connection of unused pins in single-chip mode

Pin name

Connection

Ports P6 to P10

(excluding P85) (Note 1)

AVSS, VREF

AVCC

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

resistor; or after setting for output mode, leave these pins open.

Open

Connect to VCC

Connect to VSS

Note 1: In M30623(80-pin package), P72 to P75, P91 are not connected to external pin, but exist inside

microcomputer. So set these ports for output mode.

Note 2: With external clock input to XIN pin.

Note 3: The M16C/62T group is not guaranteed to operate in memory expansion and microprocessor modes.

HOLD, RDY, NMI

Connect via resistor to VCC (pull-up)

BHE, ALE, HLDA,

XOUT(Note 2), BCLK

P45 / CS1 to P47 / CS3

Sets ports to input mode, sets bits CS1 through CS3 to 0, and connects

to Vcc via resistors (pull-up).

Figure 1.23.9. 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

BHE

HLDA

Open

Port P45 / CS1

to P47 / CS3

Note 1: In M30623(80-pin package), P72 to P75, P91 are not connected to external pin, but exist inside

microcomputer. So set these ports for output mode.

Note 2: The M16C/62T group is not guaranteed to operate in memory expansion and microprocessor modes.

Note 3: When the wiring between NMI and VCC is long, pull-up via resistor.

Table 1.23.2. Example connection of unused pins in memory expansion mode and microprocessor mode

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