914
Chapter 20
Port Functions
User’s Manual U16580EE3V1UD00
(2)
Control registers
(a) Port register 5 (P5)
The P5 register is an 8-bit register that controls reading the pin levels and writing the output levels
of port pins P50 to P57.
Writing to the P5 register is only possible in a specific sequence, where a write access to the
command register (PRCMD) must be made before a write access to the P5 register is accepted. A
read operation in between the two write operations is allowed, i.e. read-modify-write is possible on
register P5. For details refer to
This register can be read or written in 8-bit or 1-bit units.
Reset input causes an undefined register content.
Figure 20-36:
Port Register 5 (P5)
(b) Port mode register 5 (PM5)
The PM5 register is an 8-bit register that specifies the input or output mode.
Writing to the PM5 register is only possible in a specific sequence, where a write access to the
command register (PRCMD) must be made before a write access to the PM5 register is accepted.
A read operation in between the two write operations is allowed, i.e. read-modify-write is possible
on register PM5. For details refer to
.
This register can be read or written in 8-bit or 1-bit units.
Reset input sets this register to FFH.
Figure 20-37:
Port Mode Register 5 (PM5)
Remark:
n = 0 to 7
After reset:
Undefined
R/W
Address:
FFFFF40AH
7
6
5
4
3
2
1
0
P5
P57
P56
P55
P54
P53
P52
P51
P50
P5n
Input/Output Data Control of Pin P5n
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:
FFFFF42AH
7
6
5
4
3
2
1
0
PM5
PM57
PM56
PM55
PM54
PM53
PM52
PM51
PM50
PM5n
Input/Output Mode Control of Pin P5n (in Port Mode)
0
Output mode
1
Input mode
Содержание V850E/PH2
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Страница 192: ...192 Chapter 5 Memory Access Control Function PD70F3187 only User s Manual U16580EE3V1UD00 MEMO...
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Страница 976: ...976 Chapter 22 Internal RAM Parity Check Function User s Manual U16580EE3V1UD00 MEMO...
Страница 984: ...984 Chapter 23 On Chip Debug Function OCD User s Manual U16580EE3V1UD00 MEMO...
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Страница 1036: ...1036 Chapter 27 Recommended Soldering Conditions User s Manual U16580EE3V1UD00 MEMO...
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