Toshiba H1 Series, TLCS-900, TMP92CZ26AXBG TMP92CZ26A , 92CZ26A-155, 3.7.16 Port N (PN0 to PN7)

TMP92CZ26A
92CZ26A-155
3.7.16 Port N (PN0 to PN7)
PN0 to PN7 are 8-bit general-purpose I/O port. Eac h bit can be set ind ividu ally f or input
or output. Resetting sets Port N to an input port. In addition to functioning as a
general-purpose I/O port, Port N can also function as interface pin for key-board (KO0 to
KO7). This function can set to open-dr ain type output buffer.
Figure 3.7.42 Port N
Selector
A
B
S
PN0(KO0) to PN7(KO7)
PC read
Direction
control
(
on bit basis
)
PNCR write
Function
control
(on bit basis)
PNFC write
S
Output latch
PN write
Reset
Open-drain
enable
Internal data bus