Output Pin Register; Input Resistor Register - Fujitsu F2MC-16LX MB90580 Series Hardware Manual

8.3 Registers and register details

8.3.3 Output pin register

Port 4 pin register
Address : 00001B
Read/write
Initial value
This register controls the open drain in output mode.
0
1
Note: This register is not used in input mode. (Output Hi-z)
Note: Input or output mode is determined by the direction register (DDR).
Note: No pull-up resistor is used during hardware standby and stop (SPL=1). (High imped-
ance)
Note: This function is inhibited when an external bus is used. When using an external bus,
do not write data in this register.

8.3.4 Input resistor register

Port 0 resistor register
Address : 00008C
Read/write
Initial value
Port 1 resistor register
Address : 00008D
Read/write
Initial value
Port 6 resistor register
Address : 00008E
Read/write
Initial value
This register controls whether to use a pull-up resistor in input mode.
0
1
Note: This register has no use in output mode (no pull-up resistor is used).
Note: Input or output mode is determined by the direction register (DDR).
Note: No pull-up resistor is used during hardware standby and stop (SPL=1). (High impedance)
Note: This function is inhibited when an external bus is used. When using an external bus, do not
write data in this register.
106 Chapter 8: Parallel Ports
15 14
OD47 OD46 OD45 OD44 OD43 OD42 OD41 OD40
H
R/W R/W R/W
0 0 0
Standard output port in output mode
Open drain output port in output mode
7 6 5
RD07 RD06
RD05 RD04 RD03 RD02 RD01 RD00
H
R/W R/W R/W
0 0 0
15 16 15
RD17 RD16 RD15 RD14 RD13 RD12 RD11 RD10
H
R/W R/W R/W
0 0 0
7 6 5
RD65 RD64 RD63 RD62 RD61 RD60
H
R/W R/W R/W
- - 0
No pull-up resistor used in input mode.
Pull-up resistor used in input mode.
13 12 11 10
R/W R/W R/W
0 0 0
4 3 2
R/W R/W R/W R/W
0 0 0
14 13 12 11
R/W R/W R/W R/W
0 0 0 0
4 3 2
R/W R/W R/W R/W
0 0 0 0
9 8 Bit number
ODR4
R/W R/W
0 0
[initial value]
Bit number
1 0
RDR0
R/W
0 0
10
Bit number
RDR1
R/W
0
Bit number
1 0
RDR6
R/W
0
[initial value]
MB90580 Series