HD6413002 Datasheet, PDF (270/700 Pages) Renesas Technology Corp – High-performance single-chip microcontroller

9.6.3 Pin Functions
The port 9 pins are also used for SCI0 and SCI1 input and output (TxD₀, RxD₀, SCK₀, TxD₁,
RxD₁, SCK₁), and for IRQ₅ and IRQ₄ input. Table 9-10 describes the selection of pin functions.
Table 9-10 Port 9 Pin Functions
Pin
P9₅/SCK₁/IRQ₅
Pin Functions and Selection Method
Bit C/A in SMR of SCI1, bits CKE0 and CKE1 in SCR of SCI1, and bit P9₅DDR
select the pin function as follows
P9₄/SCK₀/IRQ₄
CKE1
C/A
0
0
1
1
—
CKE0
0
1
—
—
P9₅DDR
Pin function
0
1
—
—
P9₅ P9₅ SCK₁ output SCK₁ output
input output
—
SCK₁ input
IRQ₅ input
Bit C/A in SMR of SCI0, bits CKE0 and CKE1 in SCR of SCI0, and bit P9₄DDR
select the pin function as follows
CKE1
C/A
CKE0
P9₄DDR
Pin function
0
0
1
0
1
—
0
1
—
—
P9₄ P9₄ SCK₀ output SCK₀ output
input output
IRQ₄ input
1
—
—
—
SCK₀ input
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