6 port 6, 1 port 6 data direction register (p6ddr) – Renesas H8S/2111B User Manual
Page 146

Rev. 1.00, 05/04, page 112 of 544
• P50/ExTxD1
The pin function is switched as shown below according to the combination of the TE bit in
SCR of SCI_1, the SPS1 bit* in SPSR, and the P50DDR bit.
SPS1* 0
1
TE — 0
1
P50DDR 0 1
0
1
—
Pin Function
P50 input pin
P50 output pin
P50 input
pin
P50 output
pin
ExTxD1
output pin*
Note: * The program development tool (emulator) does not support this function.
7.6 Port
6
Port 6 is an 8-bit I/O port. Port 6 pins also function as the FRT I/O pins, TMR_X I/O pins,
TMR_Y input pin, key-sense interrupt input pins, and interrupt input pins. Port 6 has the following
registers.
• Port 6 data direction register (P6DDR)
• Port 6 data register (P6DR)
• Port 6 pull-up MOS control register (KMPCR)
• System control register 2 (SYSCR2)
7.6.1
Port 6 Data Direction Register (P6DDR)
P6DDR specifies input or output for the pins of port 6 on a bit-by-bit basis.
Bit Bit
Name
Initial
Value R/W Description
7 P67DDR
0 W
6 P66DDR
0 W
5 P65DDR
0 W
4 P64DDR
0 W
3 P63DDR
0 W
2 P62DDR
0 W
1 P61DDR
0 W
0 P60DDR
0 W
The corresponding port 6 pins are output ports when
P6DDR bits are set to 1, and input ports when cleared
to 0.