Datasheet

Section 12 Serial Communication Interface

Rev.7.00 Dec. 24, 2008 Page 439 of 698

REJ09B0074-0700

M_SCK

[Master LSI]

[Slave LSI_A]

Communication between master LSI

and slave LSI_A

Communication between master LSI

and slave LSI_B

M_TxD

M_RxD

SEL_A

SEL_B

IRQ7_A

(SEL_A)

[Slave LSI_B]

IRQ7_B

(SEL_B)

D0 D1 D7

SCK0_A

RSR0_A

TxD0_A

SCK0_B

RSR0_B

TxD0_B

Hi-Z

Hi-Z Hi-Z

D0 D6 D7

Period of M_SCK = high

Fixed high level

Hi-Z

Figure 12.37 Example of Communication Using the SCI Select Function