NJU3502L データシートの表示（PDF） - Japan Radio Corporation

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NJU3502L

4-BIT SINGLE CHIP MICRO CONTROLLER

Japan Radio Corporation  

NJU3502

s TERMINAL DESCRIPTION 2

No. SYMBOL INPUT/OUTPUT

FUNCTION

15 SDO

SDO :OUTPUT 2-bit Input / Output PORTF.

16

/ PF0 PF0 :OUTPUT Selects a function of either 1) or 2) for PORTF by the mask

SDI(O)

SDI(O) :INOUT option.

/ PF1 PF1 :

1) Serial Interface Function

INPUT/OUTPUT Serial Data Output Terminal : SDO

Serial Data Input-Output Terminal with Pull-up

Resistance : SDI(O)

2) 2-bit Input / Output Terminals as PORTF.

Selects a terminal circuit for each port from follows by the mask

option.

• C-MOS Input Terminal with Pull-up Resistance (IA):PF1

• C-MOS Input Terminal(IC):PF1

• C-MOS Output Terminal(OB):PF0,PF1

17 SCK /

SCK :INOUT Selects a function of either 1) or 2) by the mask option.

CKOUT CKOUT :

1) Serial Clock Input or Output Terminal with Pull-up

OUTPUT

Resistance. :SCK

2) Clock Divided by Prescaler Output Terminal with Pull-up

Resistance. :CKOUT

Selects the dividing times of the clock in the prescaler by the

mask option.

18

PB0

INOUT

4-bit Programmable Input / Output PORTB

19

PB1

INOUT

These 4-bit terminals’ direction can be changed by the program

20

PB2

INOUT

as 4-Input or 4-Output.

21

PB3

INOUT

Use of Pull-up resistance is in accordance with the mask option.

• as Input : C-MOS Input Terminals

• as Output: Nch-FET Open-Drain Output Terminal

24

VDD

–

Power source (2.4V − 5.5V)

Note ) INPUT/OUTPUT : Input or Output is selected by the mask option.

INOUT

: Input or Output is changed by the program.

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