Datasheet

78K0/Kx2-L CHAPTER 4 PORT FUNCTIONS

R01UH0028EJ0400 Rev.4.00 118

Sep 27, 2010

CHAPTER 4 PORT FUNCTIONS

4.1 Port Functions

There are two types of pin I/O buffer power supplies: AV

REF and VDD. The relationship between these power supplies

and the pins is shown below.

Table 4-1. Pin I/O Buffer Power Supplies

Power Supply Corresponding Pins

AVREF

P20 to P27

Note

VDD

Pins other than P20 to P27

Note

Note 78K0/KY2-L: P20 to P23

78K0/KA2-L (20 pins): P20 to P25

78K0/KA2-L (25 pins): P20 to P26

78K0/KA2-L (32 pins): P20 to P27, P70 to P72

78K0/KB2-L: P20 to P23

78K0/KC2-L (40 pins): P20 to P26

78K0/KC2-L (44 pins, 48 pins): P20 to P27

78K0/Kx2-L microcontrollers are provided with digital I/O ports, which enable variety of control operations. The

functions of each port are shown in Tables 4-2 to 4-6.

In addition to the function as digital I/O ports, these ports have several alternate functions. For details of the alternate

functions, refer to CHAPTER 2 PIN FUNCTIONS.

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