UPD78323 NEC, UPD78323 Datasheet - Page 12

• Manufacturer Part Number: UPD78323
• Description: 16/8-BIT SINGLE-CHIP MICROCONTROLLER
• Manufacturer: NEC

12
1.2
Note Maintenance product
RTP0 to RTP7
AD0 to AD7
Pin Name
A8 to A15
WDTO
INTP0
INTP1
INTP2
INTP3
INTP4
INTP5
INTP6
ASTB
TO00
TO01
TO02
TO03
TO10
TO11
TMD
SCK
TAS
NMI
T
R
SB0
SB1
WR
PINS OTHER THAN PORTS (1/2)
SO
RD
TI
SI
X
X
D
D
Input
Input
/output
Output
Output
Output
Input
Input
Input
Output
Input
Output
Input
/output
Input
/output
Output
Output
Output
I/O
External interrupt request input capable of specifying the effective edgy by a mode
register.
Realtime output port which generates pulses in synchronization with the trigger signal
transmitted from the realtime pulse unit (RPU).
Nonmaskable interrupot request input capable of specifying the effective at the rising or
falling edge by a mode register.
External count clock input to timer 1 (TM1)
Multiplexed address/data bus for external memory expansion
Address bus for external memory expansion
Pulse output from the realtime pulse unit
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 PD71P301
Signal output indicating that the watchdog timer has generated a nonmascable
interrupt.
Timing signal output generated for externally latching the address information output from
pins AD0 to AD7 in order to access the external memory.
Serial data output of asynchronous serial interface (UART)
Serial data input of asynchronous serial interface (UART)
Serial data output of clock synchronous serial interface in 3-wire mode
Serial data input of clock synchronous serial interface in 3-wire mode
Serial data output of clock synchronous serial interface in SBI mode
Serial clock input/output of clock synchronous serial interface
Function
PD78323, 78324
Note
Function Pin
P00 to P07
P40 to P47
P50 to P57
P27/INTP6
P32/SB0
P33/SB1
P32/SO
P27/TI
P33/SI
Dual-
P20
P21
P22
P23
P24
P25
P26
P30
P31
P34
P80
P81
P82
P83
P84
P85
P90
P91
P92
P93
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