RL78/G13 CHAPTER 2 PIN FUNCTIONS
R01UH0146EJ0100 Rev.1.00 85
Sep 22, 2011
2.2.6 P50 to P57 (port 5)
P50 to P57 function as an I/O port. These pins also function as external interrupt request input, serial interface data I/O,
and clock I/O.
Use of an on-chip pull-up resistor can be specified by pull-up resistor option register 5 (PU5).
Input to the P53 to P55 pins can be specified through a normal input buffer or a TTL input buffer in 1-bit units, using
port input mode register 5 (PIM5).
Output from the P50 and P52 to P55 pins can be specified as normal CMOS output or N-ch open-drain output (V
DD
tolerance) in 1-bit units, using port output mode register 5 (POM5).
The following operation modes can be specified in 1-bit units.
(1) Port mode
P50 to P57 function as an I/O port. P50 to P57 can be set to input or output port in 1-bit units using port mode
register 5 (PM5).
(2) Control mode
P50 to P57 function as external interrupt request input, serial interface data I/O, and clock I/O.
(a) INTP1, INTP2
These are the external interrupt request input pins for which the valid edge (rising edge, falling edge, or both
rising and falling edges) can be specified.
(b) SI11, SI31
These are the serial data input pins of serial interface CSI11 and CSI31.
(c) SO11, SO31
These are the serial data output pins of serial interface CSI11 and CSI31.
(d) SDA11, SDA31
These are the serial data I/O pins of serial interface IIC11 and IIC31.
(e) SCK31
This is a serial clock I/O pin of serial interface CSI31.
(f) SCL31
This is a serial clock output pin of serial interface IIC31.
2.2.7 P60 to P67 (port 6)
P60 to P67 function as an I/O port. These pins also function as timer I/O, serial interface data I/O, and clock I/O.
P64 to P67 use of an on-chip pull-up resistor can be specified by pull-up resistor option register 6 (PU6).
The following operation modes can be specified in 1-bit units.
(1) Port mode
P60 to P67 function as an I/O port. P60 to P67 can be set to input port or output port in 1-bit units using port mode
register 6 (PM6).
Output of P60 to P63 is N-ch open-drain output (6 V tolerance).
(2) Control mode
P60 to P67 function as timer I/O, serial interface data I/O, and clock I/O.
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