NEC PD78P214 Manuale Utente

25

P20

P21

P22

P23

P24

P25

P26

P27

P30

P31

P32

P33

P34-P37

P60-P63

P64

P65

P66

P67

P70-P75

Port 0 (P0):

Can be used as two four-bit, real-time output ports.  Can drive transistors

directly.

Port 2 (P2):

Cannot be used as a general-purpose port (non-maskable interrupt).  The

input level can be checked as part of the interrupt routine.  Pins P22 to

P27 can be collectively connected to internal pull-up resistors by means

of software.

Port 3 (P3):

Each pin can be assigned to be either an input or output pin.  Input pins

can be collectively connected to internal pull-up resistors by means of

software.

Port 4 (P4):

Can be simultaneously assigned to be either input or output pins.  Can be

collectively connected to internal pull-up resistors by means of software.

Can directly drive LEDs.

Port 5 (P5):

Each pin can be assigned to be either an input or output pin.  Input pins

can be collectively connected to internal pull-up resistors by means of

software.  Can directly drive LEDs.

Port 6 (P6):

Each of pins P64 to P67 can be assigned to be either an input or output

pin.  Input pins P64 to P67 can be collectively connected to internal pull-

up resistors by means of software.

Port 7 (P7)

Output

Input

NMI

INTP0

INTP1

INTP2/CI

INTP3

INTP4/ASCK

INTP5

SI

RxD

TxD

SCK

SO/SB0

TO0-TO3

A16-A19

RD

WR

WAIT/AN6

REFRQ/AN7

AN0-AN5

—

Pin name for
secondary
function

Notes 1. In the case of the 

µ

PD78213, these pins do not function as ports.

2. In the case of the 

µ

PD78213, neither P64 nor P65 functions as a port.

Pin

Function

Input/Output

Input

Input/Output

Input/Output

Input/Output

Input/Output

Output

P00-P07

P40-P47

P50-P57

A8-A15

AD0-AD7