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UPD178004A Datasheet(PDF) 10 Page - NEC

Part # UPD178004A
Description  8-BIT SINGLE-CHIP MICROCONTROLLERS
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD178004A Datasheet(HTML) 10 Page - NEC

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10
µPD178004A, 178006A, 178016A, 178018A
3.2 PINS OTHER THAN PORT PINS
Pin Name
I/O
Function
After Reset Alternate Function
INTP0 to
Input
External maskable interrupt inputs with specifiable valid edges (rising
Input
P00 to P06
INTP6
edge, falling edge, both rising and falling edges).
SI0
Input
Serial interface serial data input
Input
P25/SB0/SDA0
SI1
P20
SO0
Output
Serial interface serial data output
Input
P26/SB1/SDA1
SO1
P21
SB0
I/O
Serial interface serial data input/output
Input
P25/SI0/SDA0
SB1
P26/SO0/SDA1
SDA0
P25/SI0/SB0
SDA1
P26/SO0/SB1
SCK0
I/O
Serial interface serial clock input/output
Input
P27/SCL
SCK1
P22
SCL
P27/SCK0
STB
Output
Serial interface automatic transmit/receive strobe output
Input
P23
BUSY
Input
Serial interface automatic transmit/receive busy input
Input
P24
TI1
Input
External count clock input to 8-bit timer (TM1)
Input
P33
TI2
External count clock input to 8-bit timer (TM2)
P34
BEEP
Output
Buzzer output
Input
P36
ANI0 to ANI5 Input
A/D converter analog input
Input
P10 to P15
PWM0 to PWM2
Output
PWM output
P132 to P134
EO0, EO1
Output
Error out output from charge pump of the PLL frequency synthesizer
VCOL
Input
Inputs PLL local band frequency (In HF, MF mode)
VCOH
Input
Inputs PLL local band frequency (In VHF mode)
AMIFC
Input
Inputs AM intermediate frequency counter
FMIFC
Input
Inputs FM intermediate frequency counter
RESET
Input
System reset input
X1
Input
System clock oscillation resonator connection
X2
——
REGOSC
Oscillation regulator. Connected to GND via a 0.1-
µF capacitor.
REGCPU
CPU power supply regulator. Connected to GND via a 0.1-
µF capacitor.
VDD
Positive power supply
GND
Ground
——
VDDPORT
Positive power supply for port block
GNDPORT
Ground for port block
VDDPLL Note
Positive power supply for PLL
GNDPLL Note
Ground for PLL
IC
Internally connected. Connected to GND or GNDPORT.
Note
Connect a capacitor of approximately 1 000 pF between the VDDPLL pin and GNDPLL pin.


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