NJU3101
3 /3
n TERMINAL DESCRIPTION
No. SYMBOL INPUT/OUTPUT F U N C T I O N
1
2
3
4
PA0
PA1
PA2
PA3
INPUT/OUTPUT
INPUT/OUTPUT
INPUT/OUTPUT
INPUT/OUTPUT
4-bit Input / Output PORTA.
Selects a term inal circ uit f or PORT grouped with 4 line s f rom
follows by the mask option.
· C-MOS Input Terminal with Pull-up Resistance(IA)
· C-MOS Input Terminal(IC)
· C-MOS Output Terminal(OB)
5 TEST INPUT Maker Testing Terminal with Pull-down Resistance
The terminal is recommended to connect to GND.
6
7
OSC1
OSC2 INPUT
OUTPUT Internal Oscillator Terminals.
Connects a device selected from the ceramic or the crystal
resonator, or the resistor, to these terminals for the internal
oscillator.
In the external clock operation, OSC1 is the external clock
input terminal and OSC2 is normally open terminal.
8 VSS – Power Source (0V)
9
RESET INPUT RESET Terminal.
When the low level input-signal, the system is initialized.
10
11
PB0
PC0 INPUT/OUTPUT
INPUT/OUTPUT 1-bit Input / Output PORTB and PORTC.
Selects a terminal circuit for each PORT from follows by the
mask option.
· C-MOS Input Terminal with Pull-up Resistance(IA)
· C-MOS Input Terminal(IC)
· Nch-FET Open-Drain Output Terminal with Pull-up
Resistance(OA)
· Nch-FET Open-Drain Output Terminal(OC)
12
13 PD0
PD1 INPUT/OUTPUT 2-bit Input / Output PORTD.
Selects a term inal circ uit f or PORT grouped with 2 line s f rom
follows by the mask option.
· C-MOS Input Terminal with Pull-up Resistance(IA)
· C-MOS Input Terminal(IC)
· C-MOS Output Terminal(OB)
When the ports are selected as the input terminal, PD0
operates also as RESTART signal inp ut t er minal to ret ur n f r om
STANDBY mode, and PD1 operates also as the Edge
Detector Terminal.
14
15 PE0
PE1 INPUT/OUTPUT
INPUT/OUTPUT 2-bit Input / Output PORTE.
Selects a term inal circ uit f or PORT grouped with 2 line s f rom
follows by the mask option.
· C-MOS Schmitt Trigger Input Terminal with Pull-up
Resistance(IB)
· C-MOS Schmitt Trigger Input Terminal(ID)
· C-MOS Output Terminal(OB)
16 VDD – Power Source (2.4V to 5.5V)
Note ) INPUT/OUTPUT : Input or Output is selected by the mask option.
NJU3101
MEMO
[CAUTION]
The specifications on this databook are only
given for information , without any guarantee
as regards either mistakes or omissions. The
application circuits in this databook are
described only to show representative usages
of the product and not intended for the
guarantee or permission of any right including
the industrial rights.