UPD78F0034A NEC, UPD78F0034A Datasheet - Page 11

• Manufacturer Part Number: UPD78F0034A
• Description: 8 Bit Single Chip Microcontroller
• Manufacturer: NEC

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3. PIN FUNCTIONS
3.1 Port Pins (1/2)
P00
P01
P02
P03
P10 to P17
P20
P21
P22
P23
P24
P25
P30
P31
P32
P33
P34
P35
P36
P40 to P47
P50 to P57
P64
P65
P66
P67
Pin Name
Notes 1.
2.
Input
SDA0 and SCL0 are incorporated only in the µ PD78F0034AY Subseries.
SI31, SO31, and SCK31 are incorporated only in the µ PD78F0034A Subseries.
I/O
I/O
I/O
I/O
I/O
I/O
I/O
Port 0
4-bit I/O port.
Input/output can be specified in 1-bit units.
An on-chip pull-up resistor can be specified by software.
Port 1
8-bit input-only port.
Port 2
6-bit I/O port.
Input/output can be specified in 1-bit units.
An on-chip pull-up resistor can be specified by software.
Port 3
7-bit I/O port.
Input/output can be specified
in 1-bit units.
Port 4
8-bit I/O port.
Input/output can be specified in 1-bit units.
An on-chip pull-up resistor can be specified by software.
Interrupt request flag KRIF is set to 1 by falling edge detection.
Port 5
8-bit I/O port.
LEDs can be driven directly.
Input/output can be specified in 1-bit units.
An on-chip pull-up resistor can be specified by software.
Port 6
4-bit I/O port.
Input/output can be specified in 1-bit units.
An on-chip pull-up resistor can be specified by software.
Data Sheet U14040EJ4V0DS
N-ch open-drain I/O port.
LEDs can be driven directly.
An on-chip pull-up resistor can be
specified by software.
Function
µ PD78F0034A, 78F0034AY
After Reset
Input
Input
Input
Input
Input
Input
Input
INTP0
INTP1
INTP2
INTP3/ADTRG
ANI0 to ANI7
SI30
SO30
SCK30
RxD0
TxD0
ASCK0
SDA0
SCL0
SI31
SO31
SCK31
AD0 to AD7
A8 to A15
RD
WR
WAIT
ASTB
Alternate
Function
Note 2
Note 1
Note 1
Note 2
–
Note 2
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