CHAPTER 14 PORT FUNCTIONS
706
User’s Manual U14492EJ3V0UD
(a) Port DL mode register (PMDL)
The PMDL register can be read/written in 16-bit units.
When using the higher 8 bits of the PMDL register as the PMDLH register and the lower 8 bits as the
PMDLL register, it can be read/written in 8-bit or 1-bit units.
15
PMDL15
PMDL
14
PMDL14
13
PMDL13
12
PMDL12
11
PMDL11
10
PMDL10
9
PMDL9
8
PMDL8
7
PMDL7
6
PMDL6
5
PMDL5
4
PMDL4
3
PMDL3
2
PMDL2
1
PMDL1
0
PMDL0
Address
FFFFF025H
Initial value
FFFFH
Address
FFFFF024H
Bit Position
Bit Name
Function
15 to 0
PMDLn
(n = 15 to 0)
Specifies input/output mode of PDLn pin.
0: Output mode (output buffer on)
1: Input mode (output buffer off)
(b) Port DL mode control register (PMCDL)
The PMCDL register can be read/written in 16-bit units.
When using the higher 8 bits of the PMCDL register as the PMCDLH register and the lower 8 bits as the
PMCDLL register, it can be read/written in 8-bit or 1-bit units.
15
PMCDL15
PMCDL
14
PMCDL14
13
PMCDL13
12
PMCDL12
11
PMCDL11
10
PMCDL10
9
PMCDL9
8
PMCDL8
7
PMCDL7
6
PMCDL6
5
PMCDL5
4
PMCDL4
3
PMCDL3
2
PMCDL2
1
PMCDL1
0
PMCDL0
Address
FFFFF045H
Initial value
Note
0000H/FFFFH
Address
FFFFF044H
Note
0000H : Single-chip mode 0
FFFFH: Single-chip mode 1, ROMless mode 0 or 1
Bit Position
Bit Name
Function
15 to 0
PMCDLn
(n = 15 to 0)
Specifies operation mode of PDLn pin.
0: I/O port mode
1: AD15 to AD0 I/O mode
Содержание V850E/IA1 mPD703116
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