NEC UPD703116 User Manual page 38

32-bit single-chip microcontrollers
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(iii) TCUD10, TCUD11 (Timer control pulse input) ... Input
These pins input count operation switching signals to the up/down counter (timer 10, timer 11).
(iv) TCLR10, TCLR11 (Timer clear) ... Input
These are clear signal input pins to the up/down counter (timer 10, timer 11).
(v) INTP100, INTP101 (External interrupt input) ... Input
These are external interrupt request input pins and timer 10 external capture trigger input pins.
(vi) INTP110, INTP111 (External interrupt input) ... Input
These are external interrupt request input pins and timer 11 external capture trigger input pins.
(3) P20 to P27 (Port 2) ... I/O
Port 2 is an 8-bit I/O port in which input or output can be set in 1-bit units.
Besides functioning as an I/O port, in control mode, P20 to P27 operate as timer/counter I/O and external
interrupt request input.
An operation mode of port or control mode can be selected for each bit and specified by the port 2 mode
control register (PMC2).
(a) Port mode
P20 to P27 can be set to input or output in 1-bit units using the port 2 mode register (PM2).
(b) Control mode
P20 to P27 can be set to port or control mode in 1-bit units using PMC2.
(i) TO21 to TO24 (Timer output) ... Output
These pins output a timer 2 pulse signal.
(ii) TO3 (Timer output) ... Output
This pin outputs a timer 3 pulse signal.
(iii) TI2, TI3 (Timer input) ... Input
These are timer 2 and timer 3 external count clock input pins.
(iv) TCLR2, TCLR3 (Timer clear) ... Input
These are timer 2 and timer 3 clear signal input pins.
(v) INTP20 to INTP25 (External interrupt input) ... Input
These are external interrupt request input pins and timer 2 external capture trigger input pins.
(vi) INTP30, INTP31 (External interrupt input) ... Input
These are external interrupt request input pins and timer 3 external capture trigger input pins.
38
CHAPTER 2 PIN FUNCTIONS
User's Manual U14492EJ5V0UD

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