TMP92CF30
2009-06-12
92CF30-131
3.7.16 Port N (PN0 to PN7)
PN0 to PN7 are 8-bit general-purpose I/O port. Each bit can be set individually for 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
key-board interface pin (KO0 to KO7) which can be set to open-drain 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 b
us
Summary of Contents for TLCS-900/H1 Series
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