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
2.2.9 P80 to P87 (port8)
48-pin products: P80 to P83 function as an 4-bit I/O port.
64-pin products: P80 to P87 function as an 8-bit I/O port.
80-pin products: P80 to P87 function as an 8-bit I/O port.
100-pin products: P80 to P87 function as an 8-bit I/O port.
These pins also function as timer I/O, stepper motor controller/driver outputs/inputs, and segment signal outputs for the
LCD controller/driver.
The following operation modes can be specified in 1-bit units.
(1) Port mode
48-pin products: P80 to P83 function as an 4-bit I/O port.
64-pin products: P80 to P87 function as an 8-bit I/O port.
80-pin products: P80 to P87 function as an 8-bit I/O port.
100-pin products: P80 to P87 function as an 8-bit I/O port.
P80 to P87 can be set to input or output port in 1-bit units using port mode register 8 (PM8). Use of an on-chip pull-up
resistor can be specified by pull-up resistor option register 8 (PU8).
(2) Control mode
P80 to P87 function as timer I/O, stepper motor controller/driver outputs/inputs, and segment signal outputs for the
LCD controller/driver.
(a) TI01 (P80), TI03 (P81), TI05 (P82), TI07 (P83), TI11 (P84), TI13 (P85), TI15 (P86), and TI17 (P87)
These are the pins for inputting an external count clock/capture trigger to 16-bit timers01, 03, 05, 07, 11, 13, 15,
and 17.
(b) TO01 (P80), TO03 (P81), TO05 (P82), TO07 (P83), TO11 (P84), TO13 (P85), TO15 (P86), and TO17 (P87)
These are the timer output pins of 16-bit timers 01, 03, 05, 07, 11, 13, 15, and 17.
(c) SM11 (P80) to SM14 (P83) and SM21 (P84) to SM24 (P87)
These are the output pins for the stepper motor controller/driver.
(d) ZPD14 (P83), ZPD24 (P87)
These are the Zero Point Detection (ZPD) input pins for the stepper motor controller/driver.
(e) SEG32 (P80) to SEG39 (P87)
These are the segment signal output pins for the LCD controller/driver.
2.2.10 P90 to P97 (port9)
48-pin products: P90 to P94 function as a 5-bit I/O port.
64-pin products: P90 to P94 function as a 5-bit I/O port.
80-pin products: P90 to P97 function as an 8-bit I/O port.
100-pin products: P90 to P97 function as an 8-bit I/O port.
These pins also function as timer I/O, output pins for the sound generator, stepper motor controller/driver outputs/inputs,
real-time clock correction clock output, and segment signal outputs for the LCD controller/driver.
The following operation modes can be specified in 1-bit units.
R01UH0317EJ0004 Rev. 0.04 47
Feb. 22, 2013