UPD78F0882A Datasheet | NEC

.. User’s Manual 78K0/FC2 8-Bit Single-Chip Microcontrollers μPD78F0881(A) μPD78F0882(A) μPD78F0883(A) μPD78F0884(A) μPD78F0885(A) μPD78F0886(A) The 78K0/FC2 has an on-chip debug function. μPD78F0881(A2) μPD78F0882(A2) μPD78F0883(A2) μPD78F0884(A2) μPD78F0885(A2) μPD78F0886(A2) Do not use this product for mass production after the on-chip debug function has been used because its reliability cannot be guaranteed, due to issues with respect to the number of times the flash memory can be rewritten. NEC Electronics does not accept plaints concerning when use this product for mass production after the on-chip debug function has been used. Document No. U17555EJ3V0UD00 (3rd edition) Date Published October 2006 NS CP(K) 2005 Printed in Japan .. [MEMO] User’s Manual U17555EJ3V0UD .. 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 be an output pin. All handling related to unused pins must be judged separately for each device and according to related specifications governing the device. 3 PRECAUTION...