UPD78F9501

User’s Manual 78K0S/KU1+ 8-Bit Single-Chip Microcontrollers μPD78F9200 μPD78F9201 μPD78F9202 μPD78F9500 μPD78F9501 μPD78F9502 Document No. U18172EJ3V0UD00 (3rd edition) Date Published November 2009 NS © Printed in Japan 2006 [MEMO] 2 User’s Manual U18172EJ3V0UD 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 ...