UPD754304A View Datasheet(PDF) - NEC => Renesas Technology
Part Name
Description
Manufacturer
UPD754304A Datasheet PDF : 74 Pages
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µPD754302, 754304, 754302(A), 754304(A)
3. PIN FUNCTION
3.1 Port Pins
Pin Name Input/Output
P00
P01
P02
P03
P10
P11
P12
P13
P20
P21
P22
P23
P30
P31
P32
P33
P50-P53 Note 2
Input
Input/Output
Input/Output
Input
Input
Input/Output
Input/Output
Input/Output
P60
P61
P62
P63
P70
P71
P72
P73
P80
P81
Input/Output
Input/Output
Input/Output
Alternate
Function
INT4
SCK
SO/SB0
SI
INT0
INT1
INT2
TI0/TI1
PTO0
PTO1
PCL
–
–
–
–
–
–
KR0
KR1
KR2
KR3
KR4
KR5
KR6
KR7
–
–
Function
8-bit
I/O Circuit
I/O After Reset TYPE Note 1
4-bit input port (PORT0).
×
Input
B
For P01 to P03, on-chip pull-up resistors
can be specified by software in 3-bit units.
F -A
F -B
B -C
4-bit input port (PORT1).
×
On-chip pull-up resistors can be specified
by software in 4-bit units.
Noise elimination circuit can be selected
(Only P10/INT0)
4-bit input/output port (PORT2).
×
On-chip pull-up resistors can be specified
by software in 4-bit units.
Input
Input
B -C
E-B
Programmable 4-bit input/output port
×
(PORT3).
This port can be specified for input/output
bit-wise. On-chip pull-up resistor can be
specified by software in 4-bit units.
Input
N-ch open-drain 4-bit input/output port
× High level
(PORT5).
(when pull-up
resistors are
A pull-up resistor can be contained bit-wise
provided) or
(mask option).
high-
Withstand voltage is 13 V in open-drain mode.
impedance
Programmable 4-bit input/output port
√
(PORT6).
This port can be specified for input/output
bit-wise.
On-chip pull-up resistors can be specified
by software in 4-bit units.
Input
4-bit input/output port (PORT7).
On-chip pull-up resistors can be specified
by software in 4-bit units.
Input
E-B
M-D
F -A
F -A
2-bit input/output port (PORT8).
×
Input
E-B
On-chip pull-up resistors can be specified
by software in 2-bit units.
Notes 1. Circled characters indicate the Schmitt-trigger input.
2. If on-chip pull-up resistors are not specified by mask option (when used as N-ch open-drain input
port), low level input leakage current increases when input or bit manipulation instruction is executed.
9
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