UPD78F0411GA-GAM-AX Datasheet, PDF (36/564 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

CHAPTER 2 PIN FUNCTIONS
(a) SEG6, SEG7
These pins are the segment signal output pins for the LCD controller/driver.
(b) RxD6
This is a serial data input pin of serial interface UART6.
(c) TxD6
This is a serial data output pin of serial interface UART6.
2.2.7 P120 to P124 (port 12)
P120 functions as a 1-bit I/O port. P121 to P124 function as a 4-bit input port. These pins also function as pins for
external interrupt request input, potential input for external low-voltage detection, resonator for main system clock
connection, resonator for subsystem clock connection, and external clock input. The following operation modes can
be specified in 1-bit units.
(1) Port mode
P120 functions as a 1-bit I/O port and P121 to P124 function as a 4-bit I/O port. Only for P120, can be set to
input or output port using port mode register 12 (PM12). Only for P120, use of an on-chip pull-up resistor can be
specified by pull-up resistor option register 12 (PU12).
(2) Control mode
P120 to P124 function as external interrupt request input, potential input for external low-voltage detection,
resonator for main system clock connection, resonator for subsystem clock connection, and external clock input.
(a) INTP0
This functions as an external interrupt request input (INTP0) for which the valid edge (rising edge, falling
edge, or both rising and falling edges) can be specified.
(b) EXLVI
This is a potential input pin for external low-voltage detection.
(c) X1, X2
These are the pins for connecting a resonator for main system clock.
(d) EXCLK
This is an external clock input pin for main system clock.
(e) XT1, XT2
These are the pins for connecting a resonator for subsystem clock.
Remark X1 and X2 can be used as on-chip debug mode setting pins (OCD0A, OCD0B) when the on-chip
debug function is used. For detail, see CHAPTER 25 ON-CHIP DEBUG FUNCTION.
2.2.8 P140 to P143 (port 14)
P140 to P143 function as a 4-bit I/O port. These pins also function as pins for segment signal output pins for the
LCD controller/driver. Either I/O port function or segment signal output function can be selected using port function
register ALL (PFALL).
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User’s Manual U18698EJ1V0UD