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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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UPD75402ACT датащи(PDF) 14 Page - NEC |
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UPD75402ACT датащи(HTML) 14 Page - NEC |
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14 / 48 page  14 µPD75402A(A) 5. PERIPHERAL HARDWARE FUNCTIONS 5.1 PORTS The µPD75402A(A) has the following three types of I/O port: • 6 CMOS input pins (PORT0 and PORT1) • 12 CMOS I/O pins (PORT2, PORT3, and PORT6) • 4 N-ch open-drain I/O pins (PORT5) Total: 22 pins Table 5-1 Functions of Ports Note PORT3, PORT5, and PORT6 can directly drive the LED. Port name PORT0 PORT1 PORT3 Note PORT2 PORT6 Note PORT5 Note Function 4-bit Input 4-bit I/O 4-bit I/O (N-ch open-drain I/O with a withstand voltage of 10 V) Remarks Also used for SO/SB0, SI, SCK, INT0, and INT2. — Port 2 is also used for PCL. This port can incorporate a pull-up resistor as a mask option bit by bit. Operation and feature Allows read and test at any time regardless of the operation modes of dual function pins. Allows input or output mode setting bit by bit. Allows input or output mode setting in units of 4 bits. Allows input or output mode setting in units of 4 bits. |
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