HD6432670 Hitachi, HD6432670 Datasheet - Page 532

• Manufacturer Part Number: HD6432670
• Description: (HD64F267x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

10.14.1 Port F Data Direction Register (PFDDR)
The individual bits of PFDDR specify input or output for the pins of port F.
PFDDR cannot be read; if it is, an undefined value will be read.
Bit
7
6
5
4
3
2
1
0
Rev. 2.0, 04/02, page 486 of 906
Port F data register (PFDR)
Port F register (PORTF)
Port Function Control Register 2 (PFCR2)
Bit Name
PF7DDR
PF6DDR
PF5DDR
PF4DDR
PF3DDR
PF2DDR
PF1DDR
PF0DDR
Initial Value
1/0*
0
0
0
0
0
0
0
1
R/W
W
W
W
W
W
W
W
W
Description
Pin PF7 functions as the ø output pin when the
corresponding PFDDR bit is set to 1, and as an input
port when the bit is cleared to 0.
Pin PF6 functions as the
set to 1. When ASOE is cleared to 0, pin PF6 is an I/O
port and its function can be switched with PF6DDR.
Pins PF5 and PF4 are automatically designated as
bus control outputs (
Pin PF3 functions as the
LWROE is set to 1. When LWROE is cleared to 0, pin
PF3 is an I/O port and its function can be switched
with PF3DDR.
Pins PF2 and PF1 are designated as I/O ports and
their function can be switched with PFDDR.
Pins PF0 functions as bus control input/output pin
(
controller settings are made. Otherwise, these pins
are output ports when the corresponding PFDDR bit is
set to 1, and input ports when the bit is cleared to 0.
Pin PF7 to PF3 function in the same way as in modes
1, 2, 4, 5, and 6.
Modes 1, 2, 4, 5, and 6
Modes 3* and 7 (when EXPE = 1)
,
, and
and
) when the appropriate bus
output pin when ASOE is
output pin when
).