HD64F3670 Datasheet, PDF (131/323 Pages) Renesas Technology Corp – Hitachi Single-Chip Microcomputer

9.5.2 Port Data Register 8 (PDR8)
PDR8 is a general I/O port data register of port 8.
Bit Bit Name Initial Value R/W
7
0

6
0

5
0

4 P84
0
R/W
3 P83
0
R/W
2 P82
0
R/W
1 P81
0
R/W
0 P80
0
R/W
Description
Reserved
PDR8 stores output data for port 8 pins.
If PDR8 is read while PCR8 bits are set to 1, the value
stored in PDR8 is read. If PDR8 is read while PCR8 bits
are cleared to 0, the pin states are read regardless of the
value stored in PDR8.
9.5.3 Pin Functions
The correspondence between the register specification and the port functions is shown below.
P84/FTIOD pin
Register TIOR1
Bit Name IOD2
Setting Value 0
IOD1
0
0
0
0
1
1
X
Legend X: Don't care.
IOD0
0
1
X
X
PCR8
PCR84
0
1
X
X
0
1
Pin Function
P84 input/FTIOD input pin
P84 output/FTIOD input pin
FTIOD output pin
FTIOD output pin
P84 input/FTIOD input pin
P84 output/FTIOD input pin
Rev. 2.0, 03/02, page 107 of 298