Input/Output Circuit And Recommended Connection Of Unused Pins - NEC 78014Y Series User Manual

4.3 Input/Output Circuit and Recommended Connection of Unused Pins

Table 4-1 shows the input/output circuit types of pins and the recommended conditions for unused pins.
Refer to Figure 4-1 for the configuration of the input/output circuit of each type.
Pin Name
P00/INTP0/TI0
P01/INTP1
P02/INTP2
P03/INTP3
P04/XT1
P10/ANI0 to P17/ANI7
P20/SI1
P21/SO1
P22/SCK1
P23/STB
P24/BUSY
P25/SI0/SB0/SDA0
P26/SO0/SB1/SDA1
P27/SCK0/SCL
P30/TO0
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P31/TO1
P32/TO2
P33/TI1
P34/TI2
P35/PCL
P36/BUZ
P37
P40/AD0 to P47/AD7
P50/A8 to P57/A15
P60 to P63
(Mask ROM Version)
P60 to P63
(PROM Version)
P64/RD
P65/WR
P66/WAIT
P67/ASTB
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CHAPTER 4 PIN FUNCTION ( µ PD78014Y Subseries)
Table 4-1. Pin Input/Output Circuit Types (1/2)
Input/Output Input/Output
Circuit Type
2 Input
8-A Input/output
16 Input
11 Input/output
8-A
5-A
8-A
5-A
8-A
10-A
5-A
8-A
5-A
5-E
5-A
13-B
13
5-A
Recommended Connection for Unused Pins
Connect to V .
SS
Independently connect to V via a resistor.
SS
Connect to V or V .
DD SS
Independently connect to V or V
DD
Independently connect to V via a resistor.
DD
Independently connect to V or V
DD
Independently connect to V via a resistor.
DD
Independently connect to V or V
DD
via a resistor.
SS
via a resistor.
SS
via a resistor.
SS