M306V2EEFS datasheet(244/271 Pages) RENESAS

244 / 271 page

Rev.1.40

Oct 06, 2004 page 244 of 269

M306V2ME-XXXFP, M306V2EEFP

Table 2.17.1 Example connection of unused pins in single-chip mode

Table 2.17.2 Example connection of unused pins in memory expansion mode and microprocessor

mode

Pin nameConnection

Ports P0 to P10

XOUT (Note)

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: With external clock input to XIN pin.

CNVSS

Connect via resistor to VSS (pull-down)

Pin name

Connection

Ports P6 to P10

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

Note: With external clock input to XIN pin.

HOLD, RDY

Connect via resistor to VCC (pull-up)

BHE, ALE, HLDA,

XOUT(Note), BCLK

P45/CS1 to P47/CS3Sets ports to input mode, sets bits CS1 through CS3 to “0,” and

connects to Vcc via resistors (pull-up).

CNVSS

Connect via resistor to VSS (pull-down) in the memory expansion mode.

Connect via resistor to VCC (pull-up) in the microprocessor mode.

Figure 2.17.18 Example connection of unused pins

Port P0 to P10

(Input mode)

(Output mode)

XOUT

AVCC

BYTE

Microcomputer

VCC

VSS

In single-chip mode

Port P6 to P10

(Input mode)

(Output mode)

XOUT

Open

Microcomputer

VCC

AVCC

VSS

In memory expansion mode or

in microprocessor mode

HOLD

RDY

ALE

BCLK

BHE

HLDA

Open

Port P45/CS1

to P47/CS3

0.47

µF

CNVSS

0.47

µF

CNVSS (memory expansion mode)

CNVSS (microprocessor mode)

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