29
CHAPTER 2 PIN FUNCTION
User’s Manual U15104EJ2V0UD
(2) Pins other than port pins
Pin Name
I/O
Function
After Reset
Alternate Function
INTP0 to INTP4 Input
External maskable interrupt input whose valid edge
Input
P00 to P04
(rising edge, falling edge, or both rising and falling edges)
can be specified
SI30
Input
Serial data input to serial interface.
Input
P70
S131
P74
S132
P120
SI321
P123
SO30
Output
Serial data output from serial interface.
Input
P71
SO31
P75
SO32
P121
SO321
P124
SCK30
I/O
Serial clock input/output to/from serial interface.
Input
P72
SCK31
P76
SCK32
P122
SCK321
P125
TI50
Input
External count clock input to 8-bit timer 50
Input
P33
TI51
External count clock input to 8-bit timer 51
P34
TI52
External count clock input to 8-bit timer 52
P77
TO50
Output
8-bit timer 50 output
Low-level
P130
TO51
8-bit timer 51 output
output
P131
TO52
8-bit timer 52 output
P132
BEEP0
Output
Buzzer output
Input
P36
BUZ
P37
ANI0 to ANI5
Input
Analog input to A/D converter
Input
P10 to P15
EO0, EO1
Output
Error out output from charge pump of PLL frequency
–
–
synthesizer
VCOL
Input
Inputs local oscillation frequency of PLL (in HF and MF modes)
–
–
VCOH
Inputs local oscillation frequency of PLL (in VHF mode)
AMIFC
Input
Input to AM intermediate frequency counter
Input
–
FMIFC
Input to FM or AM intermediate frequency counter
RESET
Input
System reset input
–
–
X1
Input
Connection of crystal resonator for system clock oscillation.
–
–
X2
–
–
–
REGOSC
–
Regulator for oscillator. Connect this pin to GND via 0.1
µ
F
–
–
capacitor.
REGCPU
–
Regulator for CPU power supply. Connect this pin to GND
–
–
via 0.1
µ
F capacitor.
V
DD
–
Positive power supply
–
–
GND
–
Ground
–
–
V
DD
PORT
–
Port power supply
–
–
GNDPORT
–
Port ground
–
–
V
DD
PLL
Note 1
–
PLL positive power supply
–
–
GNDPLL
Note 1
–
PLL ground
–
–
IC
–
Internally connected. Directly connect this pin to GND.
–
–
V
PP
Note 2
–
Pin to apply high voltage at program writing/verifying.
–
–
Directly connect this pin to GND in normal operating mode.
Notes 1. Connect a capacitor of about 1000 pF between the V
DD
PLL and GNDPLL pins.
2.
µ
PD178F054 only.
Содержание mPD178053
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