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UPD75518A Datasheet(PDF) 9 Page - NEC |
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UPD75518A Datasheet(HTML) 9 Page - NEC |
9 / 180 page 9 µPD75518(A) 1.2 NON-PORT PINS Notes 1. The circuits enclosed in circles have a Schmitt-triggered input. 2. Be sure to input VSS level to this pin. Function Also used as Pin name I/O I O O O I/O I/O I/O I I I I I I/O O I I I – I I – I O – – – Synchronous Asynchronous Asynchronous Edge detection vectored interrupt input pin (The edge to be detected is selectable.) Edge detection testable input pin (An rising edge is detected.) P13 P20 P22 P23 P01 P02 P03 P00 P10 P11 P12 P60-P63 P70-P73 P81 P82 P83 – P150-P153 – – – – – P80 – – – External event pulse input pin for the timer/event counter Timer/event counter output pin Clock output pin Fixed frequency output pin (for buzzer or system clock trimming) Serial clock I/O pin Serial data output pin or serial bus I/O pin Serial data input pin or serial bus I/O pin Edge detection vectored interrupt input pin (Either a rising or falling edge is detected.) Parallel-falling-edge-sensitive testable input pins Parallel-falling-edge-sensitive testable input pins Serial clock I/O pin Serial data output pin Serial data input pin Analog input pins to A/D converter A/D converter reference voltage input pin A/D converter reference GND pin Pin for connection to a crystal/ceramic resonator for main system clock generation. When external clock is used, it is input to X1, and its inverted signal is input to X2. Pin for connection to a crystal resonator for subsystem clock generation. When external clock is used, it is input to XT1, and XT2 is left open. System reset input pin Timer/pulse generator pulse output pin Positive power supply pin Ground pin Internally connectedNote 2 – Input Input Input Input Input Input – – – Input Input Input Input Input – – – – – – Input – – – TI0 PTO0 PCL BUZ SCK0 SO0/SB0 SI0/SB1 INT4 INT0 INT1 INT2 KR0-KR3 KR4-KR7 SCK1 SO1 SI1 AN0-AN3 AN4-AN7 AVREF AVSS X1, X2 XT1 XT2 RESET PPO VDD VSS IC I/ONote 1 circuit type When reset B - C E - B E - B E - B F - A F - B M - C B B - C B - C F - C F - A F E B Y Y - A Z – – – B E – – – |
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