P60, P61 (Port 6); P121, P122 (Port 12) - Renesas RL78/G1P Hardware User Manual

RL78/G1P

2.3.5 P60, P61 (port 6)

P60 and P61 function as an I/O port. These pins also function as serial interface data I/O and clock I/O.
Output of P60 and P61 is N-ch open-drain output (6 V tolerance).
The following operation modes can be specified in 1-bit units.
(1) Port mode
P60 and P61 function as an I/O port. P60 and P61 can be set to input port or output port in 1-bit units using port
mode register 6 (PM6).
(2) Control mode
P60 and P61 function as serial interface data I/O, clock I/O, chip select input, and timer I/O.
(a) SCLA0, SCLA1
These are the serial clock I/O pins of serial interface IICA0 and IICA1.
(b) SDAA0, SDAA1
These are the serial data I/O pins of serial interface IICA0 and IICA1.

2.3.6 P121, P122 (port 12)

P121 and P122 function as an input port. These pins also function as connecting resonator for main system clock and
external clock input for main system clock.
The following operation modes can be specified in 1-bit units.
(1) Port mode
P121 and P122 function as an input port.
(2) Control mode
P121 and P122 function as connecting resonator for main system clock and external clock input for main system
clock.
(a) X1, X2
These are the pins for connecting a resonator for main system clock.
(b) EXCLK
This is an external clock input pin for main system clock.
R01UH0895EJ0100 Rev.1.00
Nov 29, 2019
CHAPTER 2 PIN FUNCTIONS
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