User manual

10. Parallel I/O
91
Enhanced Bank 2 I/O Port Addressing
Address Register Read Operation Write Operation
0078h Debounce Configure Status Control
0079h Debounce Duration Status Control
007Ah Reserved ----- -----
007Bh Debounce Clock ----- Control
007Ch Reserved ----- -----
007Dh Reserved ----- -----
007Eh Reserved ----- -----
007Fh Bank Address Status Control
76
5
4
32
10
Bit 7 Bit 6 Bit 5 Bit 4
Bit 3 Bit 2 Bit 1 Bit 0
Register: Port 0, 1, and 2 Data
Mode: Standard and Enhanced (Bank 0)
Address: 78h-7Ah
Access: Read and Write
Port Data Register
Note: On a power up or reset, the ports are reset to 0, forcing the outputs to be set
high.
7 6543 210Register: Write Inhibit
Mode: Standard
Address: 7Fh
Access: Read and Write
Port Write Inhibit
0 Inactive
1 Active
00000
Port
1
0
2
Port
Port
Write Inhibit Register