PD720201 datasheet(11/43 Pages) RENESAS

11 / 43 page

μPD720201/μPD720202

2. PIN FUNCTION

R19DS0047EJ0500 Rev. 5.00

Page 11 of 40

Jan. 17, 2013

2.3.4

SPI Interface

Table 2-7.

SPI Interface

Pin Name

720201

Pin No.

720202

Pin No.

Type

Active

Level

Function

SPISCK

(3.3 V

Output)

−

SPI serial flash ROM clock signal.

When the external serial ROM is not mounted,

this signal should be pulled down through a pull-

down resistor.

SPICSB

(3.3 V

Output)

−

SPI serial flash ROM chip select signal.

When the external serial ROM is not mounted,

this signal should be pulled down through a pull-

down resistor.

SPISI

(3.3 V

Output)

−

SPI serial flash ROM slave input signal.

When the external serial ROM is not mounted,

this signal should be pulled down through a pull-

down resistor.

SPISO

(3.3 V

Input)

SPI serial flash ROM slave output signal.

This signal should be pulled up through a pull-up

resistor in all cases.

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