UPD780148

User’s Manual 78K0/KF1 8-Bit Single-Chip Microcontrollers www.DataSheet4U.com µPD780143 µPD780144 µPD780146 µPD780148 µPD78F0148 µPD780143(A) µPD780144(A) µPD780146(A) µPD780148(A) µPD78F0148(A) µPD780143(A1) µPD780144(A1) µPD780146(A1) µPD780148(A1) µPD78F0148(A1) µPD780143(A2) µPD780144(A2) µPD780146(A2) µPD780148(A2) Document No. U15947EJ2V0UD00 (2nd edition) Date Published September 2003 N CP(K) © Printed in Japan [MEMO] www.DataSheet4U.com 2 User’s Manual U15947EJ2V0UD NOTES FOR CMOS DEVICES 1 PRECAUTION AGAINST ESD FOR SEMICONDUCTORS Note: Strong electric field, when exposed to a MOS device, can cause destruction of the gate oxide and ultimately degrade the device operation. Steps must be taken to stop generation of static electricity as much as possible, and quickly dissipate it once, when it has occurred. Environmental control must be adequate. When it is dry, humidifier should be used. It is recommended to avoid using insulators that easily build static electricity. Semiconductor devices must be stored and transported in an anti-static container, static shielding bag or conductive material. All test and measurement tools including work bench and floor should be grounded. The operator should be grounded using wrist strap. Semiconductor devices must not be touched with bare hands. Similar precautions need to be taken for PW boards with semiconductor devices on it. 2 HANDLING OF UNUSED INPUT PINS FOR CMOS Note: No connection for CMOS device inputs can be ca...