UPD78F4938A View Datasheet(PDF) - NEC => Renesas Technology
Part Name
Description
Manufacturer
UPD78F4938A Datasheet PDF : 52 Pages
| |||
µPD78F4938A
4. PIN FUNCTIONS
4.1 Port Pins (1/2)
Pin Name
P00 to P07
I/O
Alternate Function
Function
I/O
—
Port 0 (P0):
• 8-bit I/O port.
• Can be used as real-time output port (4 bits × 2).
• Input/output can be specified in 1-bit units.
• An on-chip pull-up resistor can be specified by means of software for
pins in input mode.
• Can drive transistor.
P10
P11
P12
P13
P14
P15 to 17
P20
P21
P22
P23
P24
P25
P26
P27
P30
P31
P32
P33
P34 to P37
P40 to P47
P50 to P57
P60 to P63
P64
P65
P66
P67
I/O
Input
I/O
I/O
I/O
I/O
—
—
ASCK2/SCK2
RxD2/SI2
TxD2/SO2
—
NMI
INTP0
INTP1
INTP2/CI
INTP3
INTP4/ASCK/SCK1
INTP5
SI0
RxD/SI1
TxD/SO1
SCK0
SO0
TO0 to TO3
AD0 to AD7
A8 to A15
A16 to A19
RD
WR
WAIT/HLDRQ
REFRQ/HLDAK
Port 1 (P1):
• 8-bit I/O port.
• Input/output can be specified in 1-bit units.
• An on-chip pull-up resistor can be specified by means of software for pins
in input mode.
• Can drive LED.
Port 2 (P2):
• 8-bit input port.
• P20 cannot be used as general-purpose port pin (non-maskable interrupt).
However, input level can be checked by interrupt routine.
• An on-chip pull-up resistor can be specified for P22 to P27 by means of
software in 6-bit units.
• P25/INTP4/ASCK/SCK1 pin operates as SCK1 I/O pin if so specified by
CSIM1.
Port 3 (P3):
• 8-bit I/O port.
• Input/output can be specified in 1-bit units.
• An on-chip pull-up resistor can be specified by means of software for pins
in input mode.
• P32 and P33 can be specified for N-ch open-drain connection.
Port 4 (P4):
• 8-bit I/O port.
• Input/output can be specified in 1-bit units.
• An on-chip pull-up resistor can be specified by means of software for pins in
input mode.
• Can drive LED.
Port 5 (P5):
• 8-bit I/O port.
• Input/output can be specified in 1-bit units.
• An on-chip pull-up resistor can be specified by means of software for pins
in input mode.
• Can drive LED.
Port 6 (P6):
• 8-bit I/O port.
• Input/output can be specified in 1-bit units.
• An on-chip pull-up resistor can be specified by means of software for pins
in input mode.
10
Data Sheet U14118EJ1V0DS
Share Link: 