UPD784907 Datasheet, PDF (14/98 Pages) NEC – 16-BIT SINGLE-CHIP MICROCONTROLLER

µPD784907, 784908
6. PIN FUNCTIONS
6.1 Port Pins (1/2)
Pin Name
P00 to P07
P10
P11
P12
P13
P14
P15 to P17
P20
P21
P22
P23
P24
P25
P26
P27
P30
P31
P32
P33
P34 to P37
P40 to P47
P50 to P57
I/O
I/O
I/O
Input
I/O
I/O
I/O
Alternate Function
—
—
—
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
Function
Port 0 (P0):
• 8-bit I/O port.
• Can be used as a real-time output port (4 bits × 2).
• Input and output can be specified by 1-bit units.
• The use of on-chip pull-up resistors can be simultaneously specified by
software for all pins in input mode.
• Can drive transistors.
Port 1 (P1):
• 8-bit I/O port.
• Input and output can be specified in 1-bit units.
• The use of on-chip pull-up resistors can be simultaneously specified by
software for all pins in input mode.
• Can drive LEDs.
Port 2 (P2):
• 8-bit input port.
• P20 does not function as a general-purpose port (non-maskable interrupt).
However, the input level can be checked by an interrupt service routine.
• The use of on-chip pull-up resistors can be specified by software for pins
P22 to P27 (in 6-bit units).
• The P25/INTP4/ASCK/SCK1 pin functions as the SCK1 output pin by a
CSIM1 specification.
Port 3 (P3):
• 8-bit I/O port.
• Input and output can be specified in 1-bit units.
• The use of on-chip pull-up resistors can be simultaneously specified by
software for all pins in input mode.
• The use of the N-ch open drain can be specified for pins P32 and P33.
Port 4 (P4):
• 8-bit I/O port.
• Input and output can be specified in 1-bit units.
• The use of on-chip pull-up resistors can be simultaneously specified by
software for all pins in input mode.
• Can drive LEDs.
Port 5 (P5):
• 8-bit I/O port.
• Input and output can be specified in 1-bit units.
• The use of on-chip pull-up resistors can be simultaneously specified by
software for all pins in input mode.
• Can drive LEDs.
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Data Sheet U11680EJ2V0DS00