UPD70F3217

User’s Manual V850ES/KJ1 32-Bit Single-Chip Microcontrollers Hardware µPD703216 µPD703216(A) µPD703216(A1) µPD703216(A2) µPD703216Y µPD703216Y(A) µPD703216Y(A1) µPD703216Y(A2) µPD703217 µPD703217(A) µPD703217(A1) µPD703217(A2) µPD703217Y µPD703217Y(A) µPD703217Y(A1) µPD703217Y(A2) µPD70F3217 µPD70F3217(A) µPD70F3217Y µPD70F3217Y(A) µPD70F3217H µPD70F3217HY µPD70F3218H µPD70F3218HY Document No. U16889EJ1V0UD00 (1st edition) Date Published March 2004 N CP(K) 2004 Printed in Japan [MEMO] 2 User’s Manual U16889EJ1V0UD NOTES FOR CMOS DEVICES 1 VOLTAGE APPLICATION WAVEFORM AT INPUT PIN Waveform distortion due to input noise or a reflected wave may cause malfunction. If the input of the CMOS device stays in the area between VIL (MAX) and VIH (MIN) due to noise, etc., the device may malfunction. Take care to prevent chattering noise from entering the device when the input level is fixed, and also in the transition period when the input level passes through the area between VIL (MAX) and VIH (MIN). 2 HANDLING OF UNUSED INPUT PINS Unconnected CMOS device inputs can be cause of malfunction. If an input pin is unconnected, it is possible that an internal input level may be generated due to noise, etc., causing malfunction. CMOS devices behave differently than Bipolar or NMOS devices. Input levels of CMOS devices must be fixed high or low by using pull-up or pull-down circuitry. Each unused pin should be connected to VDD or GND via a resistor if there is a possibility that it will...