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UPD78014 Datasheet(PDF) 16 Page - NEC |
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UPD78014 Datasheet(HTML) 16 Page - NEC |
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16 / 62 page  16 µPD78001B(A), 78002B(A) Caution When pull-up resistors are not used (specified by mask option), low-level input leak current increases with –200 µA (MAX.) under either of the following conditions. 1 When the external device expansion function is used and a low-level is input to the pin. 2 During the 3-clock period when a read instruction is executed on port 6 (P6) and the port mode register (PM6). Port 0 Port 1 Port 2 Port 3 Port 4 Port 5 Port 6 P00, P04 P01 to P03 P10 to P17 P20 to P27 P30 to P37 P40 to P47 P50 to P57 P60 to P63 P64 to P67 5 PERIPHERAL HARDWARE FUNCTION FEATURES 5.1 PORTS The I/O port has the following three types. • CMOS input (P00, P04) : 2 • CMOS input/output (P01 to P03, port 1 to port 5, P64 to P67) : 47 • N-ch open-drain input/output (15V withstand voltage) (P60 to P63) : 4 Total : 53 Table 5-1 Functions of Ports Port Name Dedicated Input port Input/output ports. Input/output can be specified bit-wise. When used as an input port, pull-up resistor can be used by software. Input/output ports. Input/output can be specified bit-wise. When used as an input port, pull-up resistor can be used by software. Input/output ports. Input/output can be specified bit-wise. When used as an input port, pull-up resistor can be used by software. Input/output ports. Input/output can be specified bit-wise. When used as an input port, pull-up resistor can be used by software. Input/output ports. Input/output can be specified in 8-bit units. When used as an input port, pull-up resistor can be used by software. Test input flag (KRIF) is set to 1 by falling edge detection. Input/output ports. Input/output can be specified bit-wise. When used as an input port, pull-up resistor can be used by software. LED can be driven directly. N-ch open-drain input/output port. Input/output can be specified bit-wise. On-chip pull-up resistor can be specified by mask option. LED can be driven directly. Input/output ports. Input/output can be specified bit-wise. When used as an input port, pull-up resistor can be used by software. Pin Name Function |
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