RL78/D1A User's Manual: Hardware - Renesas

Under development
Preliminary document
Specifications in this document are tentative and subject to change.
RL78/D1A CHAPTER 2 PIN FUNCTIONS
(h) RTC1HZ (P15)
This is a real-time clock correction clock (1 Hz) output pin.
(i) INTP0 (P17), INTP2 (P12), INTP4 (P10)
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.
(j) INTPLR0 (P14), INTPLR1 (P11)
These are the external interrupt request input for which the valid edge for LIN-UART0 and 1.
(k) SEG22 (P16) to SEG25 (P13), SEG28 (P17) and SEG29 (P12) to SEG31(P10)
These are the segment signal output pins for the LCD controller/driver.
2.2.3 P20 to P27 (port2)
48-pin products: P20 to P23 and P27 function as a 5-bit I/O.
64-pin products: P20 to P23 and P27 function as a 5-bit I/O.
80-pin products: P20 to P27 function as an 8-bit I/O port.
100-pin products: P20 to P27 function as an 8-bit I/O port
These pins also function as A/D converter analog input and reference voltage input.
The following operation modes can be specified in 1-bit units.
(1) Port mode
48-pin products: P20 to P23 and P27 function as a 5-bit I/O.
64-pin products: P20 to P23 and P27 function as a 5-bit I/O.
80-pin products: P20 to P27 function as an 8-bit I/O port.
100-pin products: P20 to P27 function as an 8-bit I/O port
P20 to P27 can be set to input or output port in 1-bit units using port mode register 2 (PM2).
(2) Control mode
P20 to P27 function as A/D converter analog input and reference voltage input.
(a) ANI0 (P20) to ANI7 (P27)
These are the analog input pins (ANI0 to ANI7) of A/D converter.
When using these pins as analog input pins, see 11.10 (5) Analog input (ANIn) pins.
(b) AVREFP (P20)
This is a pin that inputs the A/D converter reference potential (+ side).
(c) AVREFM (P21)
This is a pin that inputs the A/D converter reference potential (−side).
R01UH0317EJ0004 Rev. 0.04 41
Feb. 22, 2013