NJU3501

NJU3501 Qý TERMINAL DESCRIPTION 1 No. 1 2 F U N C T I O N 2-bit Input / Output PORTD. 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) 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. 3 PA0 INPUT/OUTPUT Selects a terminal circuit for each port from follows by the 4 PA1 INPUT/OUTPUT 5 PA2 INPUT/OUTPUT mask option. xC-MOS Input Terminal with Pull-up Resistance(IA) 6 PA3 INPUT/OUTPUT xC-MOS Input Terminal(IC) xC-MOS Output Terminal(OB) Maker Testing Terminal with Pull-down Resistance 7 TEST INPUT The terminal is recommended to connect to GND. Internal Oscillator Terminals. 8 OSC1 INPUT Connects a device selected from the ceramic or the crystal 9 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) 10 – RESET Terminal. 11 INPUT RESET When the low level input-signal, the system is initialized. 1-bit Input PORTE. 12 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....