Datasheet

78K0/Ix2 CHAPTER 2 PIN FUNCTIONS

R01UH0010EJ0500 Rev.5.00 32

Feb 28, 2012

This is a serial data input pin for serial interface UART6.

(d) TxD6

This is a serial data output pin for serial interface UART6.

2.2.5 P70 (port 7)

P70 functions as an I/O port. This pin also functions as pin for A/D converter analog input.

78K0/IY2 78K0/IA2 78K0/IB2

16 Pins 20 Pins 30 Pins/32 Pins

 

P70/ANI8

The following operation modes can be specified in 1-bit units.

(1) Port mode

P70 functions as an I/O port. P70 can be set to input or output port in 1-bit units using port mode register 7 (PM7).

(2) Control mode

P70 functions as A/D converter analog input.

(a) ANI8

This is an A/D converter analog input pin. When using this pin as analog input pin, refer to (5) ANI0/P20 to

ANI7/P27 and ANI8/P70 in 11.6 Cautions for A/D Converter.

Cautions 1. ANI8/P70 is set in the analog input mode after release of reset.

2. Make the AV

REF pin the same potential as the VDD pin when ANI8 is used.

2.2.6 P121, P122, and P125 (port 12)

P121, P122, and P125 function as an Input port. These pins also function as pins for external interrupt request input,

connecting resonator for main system clock, external clock input for main system clock, external reset input, timer input,

and clock input and data I/O for flash memory programmer/on-chip debugger.

Set bit 5 (RSTM) of the reset pin mode register (RSTMASK) to 1 when using P125/RESET as an input port, and clear

RSTM to 0 when using P125/RESET as an external reset input.

78K0/IY2 78K0/IA2 78K0/IB2

16 Pins 20 Pins 30 Pins/32 Pins

P121/X1/TOOLC0/<TI000>/<INTP0> P121/X1/TOOLC0/<TI000>/<INTP0> P121/X1/TOOLC0/<TI000>/<INTP0>

P122/X2/EXCLK/TOOLD0 P122/X2/EXCLK/TOOLD0 P122/X2/EXCLK/TOOLD0

P125/RESET/<TI000>/<INTP0> P125/RESET P125/RESET

Remark Functions in angle brackets < > can be assigned by setting the input switch control register (MUXSEL).

The following operation modes can be specified in 1-bit units.