Panasonic MN101L Series

Chapter 7
I/O Port
VII - 12 Control Registers
7.2.3 Port n Direction Control Registers
PnDIR is the register to control I/O direction of I/O when it is used as a general purpose port.
 Port 0 Direction Control Register (P0DIR: 0x03F30)
 Port 1 Direction Control Register (P1DIR: 0x03F31)
 Port 2 Direction Control Register (P2DIR: 0x03F32)
bp 76543210
Bit name P0DIR7-0
At reset00000000
Access R/W R/W R/W R/W R/W R/W R/W R/W
bp Bit name Description
7-0 P0DIR7-0
I/O mode selection
0: Intput mode
1: Output mode
bp 76543210
Bit name P1DIR7-0
At reset00000000
Access R/W R/W R/W R/W R/W R/W R/W R/W
bp Bit name Description
7-0 P1DIR7-0
I/O mode selection
0: Intput mode
1: Output mode
bp 76543210
Bit name - P2DIR6-0
At reset00000000
Access R R/WR/WR/WR/WR/WR/WR/W
bp Bit name Description
7 - Always read as 0.
6-0 P2DIR6-0
I/O mode selection
0: Intput mode
1: Output mode