NEC mPD178054 Series User Manual page 29

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