NJU3502
# TERMINAL DESCRIPTION 1
No. 22 23 1 2 INPUT/OUTPUT FUNCTION 4-bit Input / Output PORTC. INPUT/OUTPUT Selects a terminal circuit for each port from follows by the INPUT/OUTPUT mask option. INPUT/OUTPUT xC-MOS Input Terminal with Pull-up Resistance(IA) INPUT/OUTPUT xC-MOS Input Terminal(IC) xC-MOS Output Terminal(OB) 3 PD0 INPUT/OUTPUT 2-bit Input / Output PORTD. Selects a terminal circuit for each port from follows by the 4 PD1 INPUT/OUTPUT mask option. xC-MOS Schmitt Trigger Input Terminal with Pull-up Resistance(IB) xC-MOS Schmitt Trigger Input Terminal(ID) xC-MOS Output Terminal(OB) When the ports are selected as the input terminal, PD0 operates also as RESTART signal input terminal to return from STANDBY mode, and PD1 operates also as the Edge Detector Terminal. 4-bit Input / Output PORTA. 5 PA0 INPUT/OUTPUT Selects a terminal circuit for each port from follows by the 6 PA1 INPUT/OUTPUT mask option. 7 PA2 INPUT/OUTPUT xC-MOS Input Terminal with Pull-up Resistance(IA) 8 PA3 INPUT/OUTPUT xC-MOS Input Terminal(IC) xC-MOS Output Terminal(OB) Maker Testing Terminal with Pull-down Resistance 9 TEST INPUT The terminal is recommended to connect to GND. Internal Oscillator Terminals. 10 OSC1 INPUT Connects a device selected from the ceramic or the crystal 11 OSC2 OUTPUT 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. VSS Power Source (0V) 12 - RESET Terminal. 13 INPUT RESET When the low level input-signal, the system is initialized. 1-bit Input PORTE. 14 EXTI / PE0 INPUT Selects a function of either 1) or 2) for PORTE by the mask option. 1) External Interrupt Input Terminal with Pull-up Resistance. :EXTI 2) 1-bit Input Terminals as PORTE Selects a terminal circuit for each port from follows by the mask option. xC-MOS Schmitt Trigger Input Terminal with Pull-up Resistance(IB) xC-MOS Schmitt Trigger Input Terminal(ID) Note ) INPUT/OUTPUT : Input or Output is selected by the mask option. INOUT : Input or Output is changed by the program. SYMBOL PC0 PC1 PC2 PC3
NJU3502
# TERMINAL DESCRIPTION 2
No. SYMBOL INPUT/OUTPUT FUNCTION 2-bit Input / Output PORTF. 15 SDO / PF0 SDO :OUTPUT Selects a function of either 1) or 2) for PORTF by the mask 16 PF0 :OUTPUT option. SDI(O) / PF1 SDI(O) :INOUT 1) Serial Interface Function PF1 : Serial Data Output Terminal : SDO INPUT/OUTPUT 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. xC-MOS Input Terminal with Pull-up Resistance (IA):PF1 xC-MOS Input Terminal(IC):PF1 xC-MOS Output Terminal(OB):PF0,PF1 Selects a function of either 1) or 2) by the mask option. 17 SCK / SCK :INOUT 1) Serial Clock Input or Output Terminal with Pull-up CKOUT CKOUT : Resistance. :SCK OUTPUT 2) Clock Divided by Pre-scaler Output Terminal with Pull-up Resistance. :CKOUT Selects the dividing times of the clock in the pre-scaler by the mask option. 4-bit Programmable Input / Output PORTB 18 PB0 INOUT These 4-bit terminals' direction can be changed by the 19 PB1 INOUT program as 4-Input or 4-Output. 20 PB2 INOUT Use of Pull-up resistance is in accordance with the mask 21 PB3 INOUT option. xas Input : C-MOS Input Terminals xas Output: Nch-FET Open-Drain Output Terminal VDD 24 - Power source (2.4V to 5.5V) Note ) INPUT/OUTPUT : Input or Output is selected by the mask option. INOUT : Input or Output is changed by the program.
NJU3502 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.
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