NEC uPD78F4225Y, Manual

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11
µ
PD78F4225Y
4.2 Pins Other Than Port Pins (1/2)
Pin Name I/O Alternate Function Function
TI00 Input P35 External count clock input to 16-bit timer register
TI01 P36 Capture trigger signal input to capture/compare register 00
TI1 P33 External count clock input to 8-bit timer register 1
TI2 P34 External count clock input to 8-bit timer register 2
TO0 Output P30 16-bit timer output (shared by 14-bit PWM output)
TO1 P31 8-bit timer output (shared by 8-bit PWM output)
TO2 P32
RxD1 Input P20/SI1 Serial data input (UART1)
RxD2 P70/SI2 Serial data input (UART2)
TxD1 Output P21/SO1 Serial data output (UART1)
TxD2 P71/SO2 Serial data output (UART2)
ASCK1 Intput P22/SCK1 Baud rate clock input (UART1)
ASCK2 P72/SCK2 Baud rate clock input (UART2)
SI0 Input P25/SDA0 Serial data input (3-wire serial clock I/O0)
SI1 P20/RxD1 Serial data input (3-wire serial clock I/O1)
SI2 P70/RxD2 Serial data input (3-wire serial clock I/O2)
SO0 Output P26 Serial data output (3-wire serial I/O0)
SO1 P21/TxD1 Serial data output (3-wire serial I/O1)
SO2 P71/TxD2 Serial data output (3-wire serial I/O2)
SDA0 I/O P25/SI0 Serial data input/output (I
2
C bus)
SCK0 I/O P27/SCL0 Serial clock input/output (3-wire serial I/O0)
SCK1 P22/ASCK1 Serial clock input/output (3-wire serial I/O1)
SCK2 P72/ASCK2 Serial clock input/output (3-wire serial I/O2)
SCL0 P27/SCK0 Serial clock input/output (I
2
C bus)
NMI Input P02/INTP2 Non-maskable interrupt request input
INTP0 P00 External interrupt request input
INTP1 P01
INTP2 P02/NMI
INTP3 P03
INTP4 P04
INTP5 P05
PCL Output P23 Clock output (for trimming main system clock and subsystem clock)
BUZ Output P24 Buzzer output
RTP0-RTP7 Output P120-P127 Real-time output port that outputs data in synchronization with
trigger
AD0-AD7 I/O P40-P47 Low-order address/data bus when external memory is connected
A8-A15 Output P50-P57 Middle-order address bus when external memory is connected
A16-A19 P60-P63 High-order address bus when external memory is connected
RD Output P64 Strobe signal output for read operation of external memory
WR P65 Strobe signal output for write operation of external memory