upd78f0103hmca1-5a4-a Renesas Electronics Corporation., upd78f0103hmca1-5a4-a Datasheet - Page 79

• Manufacturer Part Number: upd78f0103hmca1-5a4-a
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

(2) Port registers (P0 to P3, P12, P13)
Symbol
P12
P13
These registers write the data that is output from the chip when data is output from a port.
If the data is read in the input mode, the pin level is read. If it is read in the output mode, the value of the output
latch is read.
These registers can be set by a 1-bit or 8-bit memory manipulation instruction.
RESET input clears these registers to 00H (but P2 is undefined).
P0
P1
P2
P3
P17
Pmn
7
0
7
7
0
7
0
7
0
7
0
0
1
Output 0
Output 1
P16
6
0
6
6
0
6
0
6
0
6
0
Output data control (in output mode)
P15
5
0
5
5
0
5
0
5
0
5
0
Figure 4-15. Format of Port Register
P14
4
0
4
4
0
4
0
4
0
4
0
CHAPTER 4 PORT FUNCTIONS
User’s Manual U16846EJ3V0UD
P03
P13
P23
P33
3
3
3
3
3
0
3
0
m = 0 to 3, 12, 13; n = 0 to 7
P02
P12
P22
P32
2
2
2
2
2
0
2
0
P01
P11
P21
P31
1
1
1
1
1
0
1
0
Input low level
Input high level
P120
P130
P00
P10
P20
P30
0
0
0
0
0
0
Input data read (in input mode)
Address
FF0CH
FF0DH
FF00H
FF01H
FF02H
FF03H
00H (output latch)
00H (output latch)
00H (output latch)
00H (output latch)
00H (output latch)
After reset
Undefined
R/W
R/W
R/W
R/W
R/W
R/W
R
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