3825_03 Datasheet, PDF (76/339 Pages) Renesas Technology Corp – 8-BIT SINGLE-CHIP MICROCOMPUTER

APPLICATION
2.1 I/O pins
Port P1 output control register
b7 b6 b5 b4 b3 b2 b1 b0
Port P1 output control register (P1C) [Address 0316]
B
Name
0 ^{Ports P10–P15}
output control bit
Functions
0 : Output function is
invalid
1 : Output function is valid
At reset R W
0×
1 Nothing is allocated. These bits cannot be written
to to and be read out.
5
6 Port P16 direction
register
0 : Input mode
1 : Output mode
7 Port P17 direction
register
0 : Input mode
1 : Output mode
0 ^××
0×
0^×
Fig. 2.1.3 Structure of port P1 output control register
Table 2.1.2 Memory allocation of port direction registers
Port
Port direction register address
P16, P17
P2
P4
P5
P6
P7
P8
000316 (Note)
000516
000916
000B16
000D16
000F16
001116
Note: At address 000316, the port P1 output control
register is allocated.
b7
b0
Example : When setting “6B 16” 0 1 1 0 1 0 1 1 to the port P2 direction register
Input/output direction of port P2
P27 P26 P25 P24 P23 P22 P21 P20
Input _{Output Output} Input _Output Input _{Output Output}
Fig. 2.1.4 Port direction register setting example
2–4
3825 GROUP USER’S MANUAL