UPD784044 Datasheet, PDF (14/90 Pages) NEC – 16-BIT SINGLE-CHIP MICROCONTROLLER

µPD784044(A), 784046(A)
5.2 Pins Other Than Port Pins (1/2)
Pin Name
RTP0-RTP3
NMI
INTP0
INTP1
INTP2
INTP3
INTP4
INTP5
INTP6
TO00
TO01
TO02
TO03
TO10
TO11
TO20
TO21
TO30
TO31
TI2
TI3
RxD
RxD2
TxD
TxD2
ASCK
ASCK2
SI1
SI2
SO1
SO2
SCK1
SCK2
AD0-AD7
AD8-AD15^Note
I/O
Output
Input
Output
Input
Input
Output
Input
Input
Output
I/O
I/O
I/O
Shared by:
P00-P03
P20
P21/TO00
P22/TO01
P23/TO02
P24/TO03
P25
P26/TI2
P27/TI3
P21/INTP0
P22/INTP1
P23/INTP2
P24/INTP3
P30
P31
P10
P11
P12
P13
P26/INTP5
P27/INTP6
P32/SI1
P35/SI2
P33/SO1
P36/SO2
P34/SCK1
P37/SCK2
P32/RxD
P35/RxD2
P33/TxD
P36/TxD2
P34/ASCK
P37/ASCK2
P40-P47
P50-P57
A16-A19^Note
RD
Output P60-P63
Output P90
Function
Real-time output
Non-maskable interrupt request input
External interrupt Capture trigger signal of CC00
request input
Capture trigger signal of CC01
Capture trigger signal of CC02
Capture trigger signal of CC03
Conversion start trigger input of A/D converter
–
Timer output from timer/counter
External count clock input to timer/counter 2
External count clock input to timer/counter 3
Serial data input (UART0)
Serial data input (UART2)
Serial data output (UART0)
Serial data output (UART2)
Baud rate clock input (UART0)
Baud rate clock input (UART2)
Serial data input (3-wire serial I/O1)
Serial data input (3-wire serial I/O2)
Serial data output (3-wire serial I/O1)
Serial data output (3-wire serial I/O2)
Serial clock input/output (3-wire serial I/O1)
Serial clock input/output (3-wire serial I/O2)
Lower multiplexed address/data bus when external memory is connected
• When 8-bit bus is specified
Higher address bus when external memory is connected
• When external 16-bit bus is specified
Higher multiplexed address/data bus when external memory is connected
Higher address bus when external memory is connected
Read strobe to external memory
Note The number of pins used as address bus pins differs depending on the external address space (refer to 9.
LOCAL BUS INTERFACE).
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