NJU3503(1999) データシートの表示（PDF） - Japan Radio Corporation

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NJU3503
(Rev.:1999)

4-BIT SINGLE CHIP MICRO CONTROLLER

Japan Radio Corporation  

NJU3503

„# TERMINAL DESCRIPTION 3

No.

NJU NJU

3503M 3503L

24 22

SYMBOL INPUT/OUTPUT

FUNCTIONS

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

CKOUT:

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

OUTPUT Resistance. : SCK (SCP)

2) Clock Divided by Pre-scaler Output Terminal.

Selects the dividing times of the clock in the pre-scaler

by the mask option. : CKOUT

25 23

PA0

26 24

PA1

27 25

PA2

28 26

PA3

29 27

RESET

INOUT

INOUT

INOUT

INOUT

INPUT

4-bit Programmable Input / Output PORTA.

These 4-bit terminals direction can be changed by the

program as each terminal of Input or Output.

Use of Pull-up resistance for a terminal is in accordance

with the mask option.(IOP,IO)

xas Input : C-MOS Input Terminals

xas Output: Nch-FET Open-Drain Output Terminals

RESET Terminal.

When the low level input-signal, the system is initialized.

30 28

Note )

VDD

–

Power Source (2.4V to 5.5V)

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

INOUT : Input or Output is changed by the program.

“IOP,IO,AD,ICP,ONP,ON,OC,ISP,IS,AD,P,F,IIP,II,SO,SCP,CKOUT” are symbols using on

MASK OPTION GENERATOR(MOG).

6

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