NEC uPD75P3116 - Manual (Page 7)

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PD75P3116
7 Data Sheet U11369EJ3V0DS
3. PIN FUNCTIONS
3.1 Port Pins (1/2)
Pin Name I/O Alternate Function 8-Bit Status I/O Circuit
Function I/O After Reset Type Note 1
P00 Input INT4 4-bit input port (Port 0) — Input <B>
Connection of an internal pull-up resistor can be
P01 SCK specified by a software setting in 3-bit units. <F>-A
P02 SO/SB0 <F>-B
P03 SI/SB1 <M>-C
P10 Input INT0 4-bit input port (Port 1) — Input <B>-C
Connection of an internal pull-up resistor can be
P11 INT1 specified by a software setting in 4-bit units.
P10/INT0 can be used to select a noise eliminator.
P12 TI1/TI2/INT2
P13 TI0
P20 I/O PTO0 4-bit I/O port (Port 2) — Input E-B
Connection of an internal pull-up resistor can be
P21 PTO1 specified by a software setting in 4-bit units.
P22 PCL/PTO2
P23 BUZ
P30 I/O LCDCL/MD0 Programmable 4-bit I/O port (Port 3) — Input E-B
Input and output can be specified in 1-bit units.
P31 SYNC/MD1 Connection of an internal pull-up resistor can be
specified by a software setting in 4-bit units.
P32 MD2
P33 MD3
P50 Note 2 I/O D4 N-ch open-drain 4-bit I/O port (Port 5) — High M-E
When set to open-drain, the withstanding voltage impedance
P51 Note 2 D5 is 13 V.
P52 Note 2 D6
P53 Note 2 D7
Notes 1. Circuit types enclosed in angle brackets indicate Schmitt-triggered input.
2. The low-level input leakage current increases when input instructions or bit manipulation instructions are
executed.