UPD78F0411GA-GAM-AX Datasheet, PDF (89/564 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

CHAPTER 4 PORT FUNCTIONS
4.2.6 Port 11
Port 11 is a 2-bit I/O port with an output latch. Port 11 can be set to the input mode or output mode in 1-bit units
using port mode register 11 (PM11). When the P112, P113 pins are used as an input port, use of an on-chip pull-up
resistor can be specified in 1-bit units by pull-up resistor option register 11 (PU11).
This port can also be used for segment output and serial interface data I/O.
Reset signal generation sets port 11 to input mode.
Figures 4-9 and 4-10 show a block diagram of port 11.
WRPU
Figure 4-9. Block Diagram of P112
PU11
PU112
VDD
P-ch
RD
WRPORT
WRPM
P11
Output latch
(P112)
PM11
PM112
WRPF
Alternate
function
LCD controller/driver
PFALL
PF11ALL
P11: Port register 11
PU11: Pull-up resistor option register 11
PM11: Port mode register 11
PFALL: Port function register ALL
RD: Read signal
WR××: Write signal
User’s Manual U18698EJ1V0UD
P112/SEG6/TxD6
87