UPD78320 Datasheet, PDF (13/88 Pages) NEC – 16/8-BIT SINGLE-CHIP MICROCONTROLLER

µPD78320, 78322
1.2 NON-PORT PINS (1/2)
Pin Name
I/O
Function
Dual-
Function Pin
Realtime output port which generates pulses in synchronization with the trigger signal
RTP0 to RTP7 Output _{transmitted from the realtime pulse unit (RPU).}
P00 to P07
NMI
INTP0
INTP1
INTP2
INTP3
INTP4
INTP5
INTP6
TI
TXD
RXD
SO
SI
SB0
SB1
SCK
Input
Input
Input
Output
Input
Output
Input
Input
/output
Input
/output
Nonmaskable interrupot request input capable of specifying the effective at the rising or
P20
falling edge by a mode register.
P21
P22
P23
External interrupt request input capable of specifying the effective edgy by a mode
P24
register.
P25
P26
P27/TI
External count clock input to timer 1 (TM1)
P27/INTP6
Serial data output of asynchronous serial interface (UART)
P30
Serial data input of asynchronous serial interface (UART)
P31
Serial data output of clocked serial interface in 3-wire mode
P32/SB0
Serial data input of clocked serial interface in 3-wire mode
P33/SB1
Serial data input/output of clocked serial interface in SBI mode
P32/SO
P33/SI
Serial clock input/output of clocked serial interface
P34
AD0 to AD7
Input
/output
Multiplexed address/data bus for external memory expansion
P40 to P47
A8 to A15
TO00
TO01
TO02
TO03
TO10
TO11
RD
WR
TAS
TMD
Output Address bus for external memory expansion
Output Pulse output from the realtime pulse unit
Output
Strobe signal output generated for external memory read operation
Strobe signal output generated for external memory write operation
Control signal output generated for access to turbo access manager µPD71P301^Note
P50 to P57
P80
P81
P82
P83
P84
P85
P90
P91
P92
P93
WDTO
Output Signal output indicating that the watchdog timer has generated a nonmascable interrupt.
––
ASTB
Output ^{Timing signal output generated for externally latching the lower address information output}
––
from pins AD0 to AD7 in order to access the external memory.
Note Maintenance product
13