tmp89fm42 TOSHIBA Semiconductor CORPORATION, tmp89fm42 Datasheet - Page 114

• Manufacturer Part Number: tmp89fm42
• Description: 8 Bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

8.3 I/O Port Registers
8. I/O Ports
RA005
Port P1 output latch
Port P1 input/output control
Port P1 built-in pull-up resistor control
Port P1 input data
(0x0F1B)
(0x0F28)
(0x000E)
(0x0001)
P1PRD
P1DR
P1CR
P1PU
Note: Symbol "I" means secondary function input
Note 1: * : Don’t care
Note 2: i = 0 to 3
Function
Function
Function
Read/Write
Read/Write
Read/Write
Read/Write
Bit Symbol
Bit Symbol
Bit Symbol
Bit Symbol
After reset
After reset
After reset
After reset
Function
0:
1:
0:
1:
0:
1:
R
R
R
R
7
0
7
0
7
0
7
0
-
-
-
-
Table 8-7 P1PRD Read Value
Set condi-
P1CRi
R
R
R
R
6
0
6
0
6
0
6
0
-
-
-
-
tion
0
1
R
R
R
R
5
0
5
0
5
0
5
0
-
-
-
-
Page 100
P1PRDi read value
Contents of port
"0"
R
R
R
R
4
0
4
0
4
0
4
0
-
-
-
-
Outputs L level when the output mode is selected.
Outputs H level when the output mode is selected.
Input mode (port input)
Output mode (port output)
The built-in pull-up resistor is not connected.
The built-in pull-up resistor is connected. (The resistor is
connected only when the port is used in the input mode
or as the open drain output. Under any other conditions,
setting to "1" does not make the resistor connected.)
If the port is in the input mode, the contents of the port
are read. If not, "0" is read.
P1PRD3
INT1 (I)
P1CR3
P1PU4
R/W
R/W
R/W
P13
R
3
0
3
0
3
0
3
*
P1PRD2
P1CR2
P1PU2
INT0
R/W
R/W
R/W
P12
R
2
0
2
0
2
0
2
*
(I)
P1PRD1
STOP
P1CR1
INT5
P1PU1
R/W
R/W
R/W
P11
R
1
0
1
0
1
0
1
*
(I)
(I)
TMP89FM42
P1PRD0
P1CR0
P1PU0
R/W
R/W
R/W
P10
R
0
0
0
0
0
0
0
-
*