LAPIS Semiconductor ML62Q1000 Series, User Manual, Page: 590 / 882

ML62Q1000 Series User's Manual
Chapter 17 General Purpose Port
FEUL62Q1000 17-31
17.3 Description of Operation
17.3.1 Input
Each pin of port n sets the PnmIE bit of the PnMODm register to enter the state where input is enabled.
In the state with input enabled, the pin level can be read using the PnDI register.
In addition, pull-up can be enabled by setting the PnmPU bit of the PnMODm register.
At a system reset, input disabled and no pull-up are selected as the initial status.
n: Port number 0 to 9, A, B
m: Bit number 0 to 7
17.3.2 Output
Each pin of port n sets the PnmOD bit of the PnMODm register to choose either CMOS output or N-channel open drain
output as an output type and sets PnmOE bit of the PnMODm register to enter the state where output is enabled.
In the state with output enabled, "L" or "H" level is output to each pin of the general-purpose port (GPIOn) according to
the value set in the PnDO register.
At a system reset, output disabled and CMOS output are selected as the initial status.
n: Port number 0 to 9, A, B
m: Bit number 0 to 7
17.3.3 Primary Functions Other than Input/Output Function
External input (EXI0 to EXI11) can be used as the primary function other than the input/output function.
When using EXI0 to EXI11 as external interrupt input and the external clock inputs of the 16-bit timer or external
trigger/external clock input of the functional timer, set the PnMODm register of the applicable port to input enabled
(PnmIE bit="1").
See Chapter 18 "External Interrupt Control" for external interrupts, Chapter 8 "16-Bit Timer" for external clock input of
the 16-bit timer, and Chapter 9 "Functional Timer" for external trigger/external clock input of the functional timer.
n: Port number 0 to 9, A, B
m: Bit number 0 to 7
17.3.4 Shared Function
Each pin of port n can use secondary to octonary functions as the shared function.
Set PnmMD3 to PnmMD0 bits of the PnMODm register to choose each of the secondary to octonary functions.
For the usable shared function, see Table 1-7 "ML62Q1300 Group Pin List", Table 1-8 "ML62Q1500 Group Pin List"
and Table 1-9 "ML62Q1700 Group Pin List".
n: Port number 0 to 9, A, B
m: Bit number 0 to 7