H83318 Datasheet, PDF (224/574 Pages) Renesas Technology Corp – Single-Chip Microcomputer

Table 8.21 Port 9 Pin Functions (cont)
Pin
P9₃/CS/RD
Pin Functions and Selection Method
Bit DPME in SYSCR, bit HSCE in IOCR of the PBI, bit P9₃DDR, and the
operating mode select the pin function as follows
Operating mode Modes 1
and 2
Mode 3
DPME
X
0
1
HSCE
X
X
1
0
P9₃DDR
Pin function
X
RD
output
0
P9₃
input
1
P9₃
output
0
P9₃
input
1
P9₃
output
X
CS
input
P9₂/IRQ₀
P9₁/IRQ₁/
XCS
P9₀/IRQ₂/
ADTRG
P9₂DDR
0
1
Pin function
P9₂ input
P9₂ output
IRQ₀ input
IRQ₀ input can be used when bit IRQ0E is set to 1 in IER.
Bit DPME in SYSCR, bit P9₁DDR, and the operating mode select the pin
function as follows
Operating mode
Modes 1 and 2
Mode 3
DPME
0
1
X
P9₁DDR
0
1
X
0
1
Pin function
P9₁ input P9₁ output XCS input P9₁ input P9₁ output
IRQ₁ input
IRQ₁ input
IRQ₁ input can be used when bit IRQ1E is set to 1 in IER.
P9₀DDR
0
1
Pin function
P9₀ input
P9₀ output
IRQ₂ input and ADTRG input
IRQ₂ input can be used when bit IRQ2E is set to 1 in IER.
ADTRG input can be used when bit TRGE is set to 1 in ADCR.
X: 0 and 1 settings both give the same pin function.
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