UPD78F9177 Datasheet, PDF (12/56 Pages) NEC – 8-BIT SINGLE-CHIP MICROCONTROLLER

µPD78F9177, 78F9177Y
3.2 Non-Port Pins
Pin Name
I/O
Function
INTP0
INTP1
Input External interrupt input for which the valid edge (rising edge,
falling edge, or both rising and falling edges) can be specified
INTP2
INTP3
SI20
Input Serial data input to serial interface
SO20
Output Serial data output from serial interface
SCK20
I/O Serial clock input/output for serial interface
SS20
Input Chip select input to serial interface
ASCK20
Input Serial clock input for asynchronous serial interface
RxD20
Input Serial data input for asynchronous serial interface
TxD20
SCL0 ^Note1
SDA0 ^Note1
Output
I/O
I/O
Serial data output for asynchronous serial interface
SMB0 clock input/output
SMB0 data input/output
TI80
Input External count clock input to 8-bit timer/event counter (TM80)
TI81
Input External count clock input to 8-bit timer/event counter (TM81)
TO80
Output 8-bit timer/event counter (TM80) output
TO81
Output 8-bit timer/event counter (TM81) output
TO82
Output 8-bit timer (TM82) output
TO90
Output 16-bit timer (TM90) output
BZO90
Output 16-bit timer (TM90) Buzzer output
CPT90
Input Capture edge input
ANI0 to
ANI7
AVREF
AVSS
AVDD
X1
X2
XT1
XT2
VDD0
VDD1
VSS0
VSS1
RESET
VPP
IC0 ^Note2
IC2 ^Note1
Input A/D converter analog input
−
−
−
Input
−
Input
−
−
−
−
−
Input
−
−
−
A/D converter reference voltage
A/D converter ground potential
A/D converter analog power supply
Connecting crystal resonator for main system clock
oscillation
Connecting crystal resonator for subsystem clock oscillation
Positive power supply
Positive power supply (other than ports)
Ground potential
Ground potential (other than ports)
System reset input
Sets flash memory programming mode. Applies high voltage
when a program is written or verified. Connect directly to VSS0
or VSS1 in normal operation mode.
Internally connected. Connect this pin directly to the VSS0 or
VSS1 pin.
Internally connected. Leave this pin open.
Notes 1. µPD78F9177Y only.
2. 48-pin plastic TQFP (fine pitch) only.
After Reset
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Alternate Function
P30/TI81/CPT90
P31/TO81
P32/TO90
P33/TO82/BZO90
P22/RxD20
P21/TxD20
P20/ASCK20
P25/TI80
P20/SCK20
P22/SI20
P21/SO20
P23
P24
P25/SS20
P30/INTP0/CPT90
P26
P31/INTP1
P33/INTP3/BZO90
P32/INTP2
P33/INTP3/TO82
P30/INTP0/TI81
P60 to P67
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
Input
−
−
−
−
−
−
−
12
Data Sheet U14022EJ1V0DS00