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UPD754264 Datasheet(PDF) 7 Page - NEC

Part # UPD754264
Description  4-BIT SINGLE-CHIP MICROCONTROLLERS
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD754264 Datasheet(HTML) 7 Page - NEC

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µPD754264
3. PIN FUNCTION
3.1 Port Pins
Pin Name
Input/Output
Alternate
Function
8-bit
After Reset
I/O Circuit
Function
I/O
TYPE Note 1
P30
Input/Output
PTO0
Input
E-B
P31
PTO1
P32
PTO2
P33
P60
Input/Output
AVREF
Input
F -A
P61
INT0
P62
AN0
P63
AN1
P70
Input
KR4
Input
B -A
P71
KR5
P72
KR6
P73
KR7
P80
Input/Output
Input
F -A
Notes 1. Circled characters indicate the Schmitt-trigger input.
2. Do not specify an on-chip pull-up resistor connection when using the A/D converter.
Programmable 4-bit input/output port (PORT3).
This port can be specified input/output bit-
wise.
On-chip pull-up resistor connection can be
specified by software in 4-bit units.
Programmable 4-bit input/output port (PORT6).
This port can be specified input/output bit-
wise.
On-chip pull-up resistor can be specified by
software in 4-bit unitsNote2.
Noise eliminator can be selected with P61/
INT0.
4-bit input port (PORT7).
On-chip pull-up resistor can be specified by
software bit-wise.
1-bit input/output port (PORT8).
On-chip pull-up resistor connection can be
specified by software.


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