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UPD178004A Datasheet(PDF) 11 Page - NEC

Part # UPD178004A
Description  8-BIT SINGLE-CHIP MICROCONTROLLERS
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
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UPD178004A Datasheet(HTML) 11 Page - NEC

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11
µPD178004A, 178006A, 178016A, 178018A
Pin Name
I/O Circuit Type
I/O
Recommended Connections of Unused Pins
P00/INTP0
2
Input
Connected to GND or GNDPORT
P01/INTP1 to P06/INTP6
8
I/O
Set in general-purpose input port mode by software and
P10/ANI0 to P15/ANI5
11-A
individually connected to VDD, VDDPORT, GND, or GNDPORT
P20/SI1
8
via resistor.
P21/SO1
5
P22/SCK1
8
P23/STB
5
P24/BUSY
8
P25/SI0/SB0/SDA0
10
P26/SO0/SB1/SDA1
P27/SCK0/SCL
P30 to P32
5
P33/TI1, P34/TI2
8
P35
5
P36/BEEP
P37
P40 to P47
5-G
P50 to P57
5
P60 to P63
13-D
P64 to P67
5
P120 to P125
P132/PWM0 to P134/PWM2
19
Output
Set to low-level output by software and open
EO0
DTS-EO1
Open
EO1
DTS-EO3 Note
VCOL, VCOH
DTS-AMP
Input
Set to disabled status by software and open
AMIFC, FMIFC
IC
—
—
Connected to GND or GNDPORT directly
Note
For the
µPD178004A and 178006A, the I/O circuit type is DTS-EO1.
3.3 INPUT/OUTPUT CIRCUITS AND RECOMMENDED CONNECTION OF UNUSED PINS
Table 3-1 shows the input/output circuit types of pins and the recommended conditions for unused pins.
Refer to Figure 3-1 for the configuration of the input/output circuit of each type.
Table 3-1. I/O Circuit Type of Each Circuit


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