Datasheet

78K0/Kx2-L CHAPTER 2 PIN FUNCTIONS
R01UH0028EJ0400 Rev.4.00 51
Sep 27, 2010
(a) INTP0
This functions as an external interrupt request input (INTP0) for which the valid edge (rising edge, falling edge, or
both rising and falling edges) can be specified.
(b) EXLVI
This is a potential input pin for external low-voltage detection.
(c) X1, X2
These are pins for connecting a resonator for main system clock.
(d) EXCLK
This is an external clock input pin for main system clock.
(e) XT1, XT2
These are pins for connecting a resonator for subsystem clock.
(f) EXCLKS
This is an external clock input pin for subsystem clock.
(g) SO11
This is a serial data output pin of serial interface CSI11.
(h) RESET
This is an active-low system reset input pin.
(i) TOOLC0
This is a clock input pin for flash memory programmer/on-chip debugger.
(j) TOOLD0
This is a data I/O pin for flash memory programmer/on-chip debugger.
(k) TI000
This is a pin for inputting an external count clock to 16-bit timer/event counter 00 and is also for inputting a
capture trigger signal to the capture registers (CR000, CR010) of 16-bit timer/event counter 00.
Caution Because RESET/P125 is set in the external reset input immediately after release of reset, if a reset
signal is generated during low level input, the reset status continues until the input rises to the
high level.
Remark For how to connect a flash memory programmer using TOOLC0/X1, TOOLD0/X2, refer to CHAPTER 25
FLASH MEMORY. For how to connect TOOLC0/X1, TOOLD0/X2 and an on-chip debug emulator, refer to
CHAPTER 26 ON-CHIP DEBUG FUNCTION.
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