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MB90483CPF Datasheet(PDF) 85 Page - Fujitsu Component Limited. |
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MB90483CPF Datasheet(HTML) 85 Page - Fujitsu Component Limited. |
85 / 124 page MB90480B/485B Series DS07-13722-11E 85 (Continued) • Note that when the microcontroller drive current is low, such as in the power saving modes, the + B input potential may pass through the protective diode and increase the potential at the VCC pin, and this may affect other devices. • Note that if a + B signal is input when the microcontroller power supply is off (not fixed at 0 V) , the power supply is provided from the pins, so that incomplete operation may result. • Note that if the + B input is applied during power-on, the power supply is provided from the pins and the resulting supply voltage may not be sufficient to operate the power-on reset. • Care must be taken not to leave the + B input pin open. • Note that analog system input/output pins other than the A/D input pins (LCD drive pins, comparator input pins, etc.) cannot accept + B signal input. • Sample recommended circuits: *8 : MB90485B series only P20 to P27, P30 to P37, P40 to P47, P70 to P77 pins can be used as 5 V I/F pin on applied 5 V to VCC5 pin. P76 and P77 is N-ch open drain pin. *9 : As for P76 and P77 (N-ch open drain pin) , even if using at 3 V simplicity (VCC3 = VCC5) , the ratings are applied. WARNING: Semiconductor devices can be permanently damaged by application of stress (voltage, current, temperature, etc.) in excess of absolute maximum ratings. Do not exceed these ratings. P-ch N-ch VCC R Protective diode Limiting resistance + B input (0 V to 16 V) • Input/Output Equivalent circuits |
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