Hitachi H8S/2670, Reference Manual

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Port 6 Data Direction Register (P6DDR)
Bit 7 6 5 4 3 2 1 0
— — P65DDR P64DDR P63DDR P62DDR P61DDR P60DDR
Initial value 0 0 0 0 0 0 0 0
Read/Write — — W W W W W W
P6DDR is a 6-bit write-only register, the individual bits of which specify input or output for the
pins of port 6. P6DDR cannot be read; if it is, an undefined value will be read. Bits 7 and 6 are
reserved.
Setting a P6DDR bit to 1 makes the corresponding port 6 pin an output pin, while clearing the bit
to 0 makes the pin an input pin.
P6DDR is initialized to H'00 by a reset and in hardware standby mode. It retains its prior state in
software standby mode.
Port 6 Data Register (P6DR)
Bit 7 6 5 4 3 2 1 0
— — P65DR P64DR P63DR P62DR P61DR P60DR
Initial value 0 0 0 0 0 0 0 0
Read/Write — — R/W R/W R/W R/W R/W R/W
P6DR is a 6-bit readable/writable register that stores output data for the port 6 pins (P65 to P60).
Bits 7 and 6 are reserved; they are always read as 0 and cannot be modified.
P6DR is initialized to H'00 by a reset and in hardware standby mode. It retains its prior state in
software standby mode.
Port 6 Register (PORT6)
Bit 7 6 5 4 3 2 1 0
— — P65 P64 P63 P62 P61 P60
Initial value
Undefined Undefined
—
*
—
*
—
*
—
*
—
*
—
*
Read/Write — — R R R R R R
Note:
*
Determined by the state of pins P65 to P60.
PORT6 is a 6-bit read-only register that shows the pin states. PORT6 cannot be written to; writing
of output data for the port 6 pins (P65 to P60) must always be performed on P6DR.