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CHAPTER 4 PORT FUNCTIONS
User’s Manual U15798EJ2V0UD
4.2.9 Port 10
Port 10 is an 8-bit I/O port with an output latch. The P100 to P107 pins can be set to input mode/output mode
in 1-bit units using port mode register 10 (PM10).
This port can also be used for LCD controller/driver segment output. This port can switched between an I/O port
and a segment output port in 1-bit units by pin function switching register 10 (PF10).
RESET input sets port 10 to input mode.
Figure 4-16 shows a block diagram of port 10.
Figure 4-16. Block Diagram of P100 to P107
PF:
Pin function switching register
PM: Port mode register
RD: Port 10 read signal
WR: Port 10 write signal
RD
P100/S28
to
P107/S35
WR
PORT
WR
PM
Output latch
(P100 to P107)
PM100 to PM107
Selector
Segment output
WR
PF
PF100 to PF107
Selector
Internal bus
Содержание mPD780344 Series
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