UPD78F9418A NEC, UPD78F9418A Datasheet - Page 34

• Manufacturer Part Number: UPD78F9418A
• Description: (UPD7894xxA) 8-Bit Single Chip Microcontrollers
• Manufacturer: NEC

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34
INTP0
INTP1
INTP2
INTP3
KR0 to KR5
SI
SO
SCK
ASCK
RxD
TxD
TI0
TI1
TO2
TO5
CPT5
CMPTOUT0
CMPIN0
CMPREF0
ANI0
ANI1
ANI2 to ANI6
AV
AV
AV
S0 to S15
S16 to S19
S20 to S27
COM0 to COM3
V
BIAS
X1
X2
XT1
XT2
RESET
LC0
Pin Name
(2)
REF
SS
DD
to V
Non-port pins (1/2)
LC2
Input
Input
Output
I/O
Input
Output
Input
Input
Output
Output
Input
Output
Input
Input
Output
Output
Input
Input
Input
Input
Input
Input
I/O
−
−
−
−
−
−
−
8-bit timer (TM02) output
16-bit timer (TM50) output
System reset input
External interrupt input for which the valid edge (rising edge,
falling edge, or both rising and falling edges) can be specified
Key return signal detection
Serial interface serial data input
Serial interface serial data output
Serial interface serial clock input/output
Serial clock input for asynchronous serial interface
Serial data input for asynchronous serial interface
Serial data output for asynchronous serial interface
External count clock input to 8-bit timer (TM00)
External count clock input to 8-bit timer (TM01)
Capture edge input
Comparator output
Comparator input
Comparator reference voltage input
A/D converter analog input
A/D converter reference voltage
A/D converter ground potential
A/D converter analog power supply
LCD controller/driver segment signal output
LCD controller/driver common signal output
LCD driving voltage
Supply voltage for LCD driving
Connecting crystal resonator for main system clock oscillation
Connecting crystal resonator for subsystem clock oscillation
CHAPTER 2 PIN FUNCTIONS
User’s Manual U13952EJ3V0UD
Function
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Output
Input
Input
Output
After Reset
−
−
−
−
−
−
−
−
−
P22/RxD
P20/ASCK
P23/CMPTOUT0
P60/CMPIN0
P24/TI0
P25/TI1
P26/TO5
P27/CPT5
P40 to P45
P21/TxD
P20/SCK
P22/SI
P21/SO
P24/INTP0
P25/INTP1
P26/INTP2
P27/INTP3
P23/TO2
P60/ANI0
P61/ANI1
P61/CMPREF0
P62 to P66
P93 to P90
P87 to P80
Alternate Function
•−•
•−•
•−•
•−•
•−•
•−•
•−•
•−•
•−•
•−•
•−•
−