Toshiba TLCS-900/L1 Series Manual page 59

3.5.2 Port 2 (P20 to P27)
Port 2 is an 8-bit output port. In addition to functioning as a output port, port 2 can also
function as an address bus (A16 to A23).
Each bit can be set individually for address bus using the function register P2FC.
Resetting sets all bits of the function register P2FC to 1 and sets port 2 to address bus.
Reset
S
Function control
(on bits basis)
P2FC write
A
Output
latch
B
P2 write
P2 read
Internal A16 to A23
Figure 3.5.2 Port 2
91C824-57
S
Port 2
P20 to P27
Output buffer
(A16 to A23)
TMP91C824
2008-02-20