NJU3102 n TERMINAL DESCRIPTION No. SYMBOL 4 PA0 5 PA1 6 PA2 7 PA3 INPUT/OUTPUT INPUT/OUTPUT INPUT/OUTPUT INPUT/OUTPUT INPUT/OUTPUT FUNCTION 4-bit Input / Output PORTA. Selects a terminal circuit for PORT grouped with 4 lines from follows by the mask option. · C-MOS Input Terminal with Pull-up Resistance(IA) · C-MOS Input Terminal(IC) · C-MOS Output Terminal(OB) Maker Testing Terminal with Pull-down Resistance 8 TEST INPUT The terminal is recommended to connect to GND. Internal Oscillator Terminals. 9 OSC1 INPUT Connects a device selected from the ceramic or the crystal 10 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) 11 12 RESET INPUT RESET Terminal. When the low level input-signal, the system is initialized. 13 PB0 INPUT/OUTPUT 4-bit Input / Output PORTB. Selects a terminal circuit for PORT grouped with 4 lines from 14 PB1 INPUT/OUTPUT 15 PB2 INPUT/OUTPUT follows by the mask option. · C-MOS Input Terminal with Pull-up Resistance(IA) 16 PB3 INPUT/OUTPUT · C-MOS Input Terminal(IC) · C-MOS Output Terminal(OB) 17 PC0 INPUT/OUTPUT 2-bit Input / Output PORTC. Selects a terminal circuit for PORT grouped with 2 lines from 18 PC1 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, PC0 operates also as RESTART signal input terminal to return from STANDBY mode, and PC1 operates also as the Edge Detector Terminal. 19 PD0 INPUT/OUTPUT 4-bit Input / Output PORTD. Selects a terminal circuit for PORT grouped with 4 lines from 20 PD1 INPUT/OUTPUT 21 PD2 INPUT/OUTPUT follows by the mask option. · C-MOS Input Terminal with Pull-up Resistance(IA) 1 PD3 INPUT/OUTPUT · C-MOS Input Terminal(IC) · Nch-FET Open-Drain Output Terminal with Pull-up Resistance(OA) · Nch-FET Open-Drain Output Terminal(OC) 2 PE0 INPUT/OUTPUT 2-bit Input / Output PORTE. Selects a terminal circuit for PORT grouped with 2 lines from 3 PE1 INPUT/OUTPUT follows by the mask option. · C-MOS Schmitt Trigger Input Terminal with Pull-upResistance(IB) · C-MOS Schmitt Trigger Input Terminal(ID) · C-MOS Output Terminal(OB) VDD – Power Source (2.4V to 5.5V) 22 Note ) INPUT/OUTPUT : Input or Output is selected by the mask option. 3 /3 NJU3102 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.