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UPD75P3116 Datasheet(PDF) 6 Page - NEC

Part # UPD75P3116
Description  4-BIT SINGLE-CHIP MICROCONTROLLER
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD75P3116 Datasheet(HTML) 6 Page - NEC

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µPD75P3116
6
3. PIN FUNCTIONS
3.1 Port Pins (1/2)
Pin name
I/O
Alternate function
Function
8-bit
Status
I/O circuit
I/O
after reset
typeNote 1
P00
Input
INT4
4-bit input port (PORT0)
X
Input
<B>
P01 to P03 are 3-bit pins for which connection of
P01
I/O
SCK
an internal pull-up resistor can be specified by
<F>-A
software.
P02
I/O
SO/SB0
<F>-B
P03
I/O
SI/SB1
<M>-C
P10
Input
INT0
4-bit input port (PORT1)
X
Input
<B>-C
Connection of an internal pull-up resistor can be
P11
INT1
specified by software in 4-bit units.
P10/INT0 can select noise elimination circuit.
P12
TI1/TI2/INT2
P13
TI0
P20
I/O
PTO0
4-bit I/O port (PORT2)
X
Input
E-B
Connection of an internal pull-up resistor
P21
PTO1
can be specified by software in 4-bit units.
P22
PCL/PTO2
P23
BUZ
P30
I/O
LCDCL/MD0
Programmable 4-bit I/O port (PORT3)
X
Input
E-B
Input and output in single-bit units can be specified.
P31
SYNC/MD1
When set for 4-bit units, connection of an internal
pull-up resistor can be specified by software.
P32
MD2
P33
MD3
P50 Note 2
I/O
D4
N-ch open-drain 4-bit I/O port (PORT5)
X
High
M-E
When set to open-drain, voltage is 13 V.
impedance
P51 Note 2
D5
P52 Note 2
D6
P53 Note 2
D7
Notes 1. Circuit types enclosed in brackets indicate Schmitt trigger input.
2. Low-level input leakage current increases when input instructions or bit manipulation instructions are executed.


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