NJU3501
Qy TERMINAL DESCRIPTION 1
No. 1 2 FUNCTION 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. 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) 4-bit Programmable Input / Output PORTB 13 PB0 INOUT These 4-bit terminals' direction can be changed by the 14 PB1 INOUT program as 4-Input or 4-Output. 15 PB2 INOUT Use of Pull-up resistance is in accordance with the mask 16 PB3 INOUT option. xas Input : C-MOS Input Terminals xas Output : Nch-FET Open-Drain Output Terminals Note ) INPUT/OUTPUT : Input or Output is selected by the mask option. INOUT : Input or Output is changed by the program. SYMBOL PD0 PD1 INPUT/OUTPUT INPUT/OUTPUT INPUT/OUTPUT
NJU3501
n TERMINAL DESCRIPTION 2
No. SYMBOL 17 SDO / PC0 18 SDI(O) / PC1 19 SCK / PC2 INPUT/OUTPUT FUNCTION 3-bit Input / Output PORTC. SDO :OUTPUT Selects a function of either 1) or 2) for PORTC by the mask SDI(O) :INOUT option. SCK :INOUT 1) Serial Interface Function. Serial Data Output Terminal : SDO PC0 to PC2 : Serial Data Input-Output Terminal with Pull-up INPUT/OUTPUT Resistance : SDI(O) Serial Clock Input or Output Terminal with Pull-up Resistance : SCK 2) 3-bit Input / Output Terminal PORTC. Selects a terminal circuit for each port from follows by the mask option. xC-MOS Input Terminal with Pull-up Resistance(IA) xC-MOS Input Terminal(IC) xC-MOS Output Terminal(OB) VDD 20 - 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.
NJU3501 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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