929
Chapter 20
Port Functions
User’s Manual U16580EE3V1UD00
(2)
Control registers
(a) Port register 8 (P8)
The P8 register is an 8-bit register that controls reading the pin levels and writing the output levels
of port pins P80 to P86.
This register can be read or written in 8-bit or 1-bit units.
Reset input causes an undefined register content.
Figure 20-49:
Port Register 8 (P8)
(b) Port mode register 8 (PM8)
The PM8 register is an 8-bit register that specifies the input or output mode.
This register can be read or written in 8-bit or 1-bit units.
Reset input sets this register to FFH.
Figure 20-50:
Port Mode Register 8 (PM8)
Remark:
n = 0 to 6
After reset:
Undefined
R/W
Address:
FFFFF410H
7
6
5
4
3
2
1
0
P8
0
P86
P85
P84
P83
P82
P81
P80
P8n
Input/Output Data Control of Pin P8n
0
Input mode: Low level is input
Output mode: Low level is output
1
Input mode: High level is input
Output mode: High level is output
After reset:
FFH
R/W
Address:
FFFFF430H
7
6
5
4
3
2
1
0
PM8
1
PM86
PM85
PM84
PM83
PM82
PM81
PM80
PM8n
Input/Output Mode Control of Pin P8n (in Port Mode)
0
Output mode
1
Input mode
Содержание V850E/PH2
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