Pin I/O Circuits And Recommended Connections Of Unused Pins - NEC mPD780065 Series Preliminary User's Manual

2.3 Pin I/O Circuits and Recommended Connections of Unused Pins

The input/output circuit type of each pin and recommended connections of unused pins are shown in Table 2-1.
For the input/output circuit configuration of each type, refer to Figure 2-1.
Pin Name
P00/INTP0 to P03/INTP3
P04 to P07
P20/T100/TO0
P21/T101
P22/TI50/TO50
P23/TI51/TO51
P24 to P27
P30 to P37
P40/AD0 to P47/AD7
P50/A8 to P57/A15
P64/RD
P65/WR
P66/WAIT
P67/ASTB
P70/PCL
P71/ASCK0
P72/TxD0
P73/RxD0
P74/SCK30
P75/SDIO30
P76, P77
P80/STB
P81/BUSY
P82/SCK1
P83/SO1
P84/SI1
P90/SCK31
P91/SO31
P92/SI31
ANI0 to ANI7
XT1
XT2
RESET
AV
REF
AV
SS
IC (for mask ROM version)
V (for flash memory version)
PP
CHAPTER 2 PIN FUNCTION
Table 2-1. Connections of Unused Pins
Input/Output Input/Output
Circuit Type
8-C Input/output
5-H
8-C
5-H
8-C
5-H
8-C
5-H
8-C
5-H
8-C
5-H
8-C
7-B Input
16
—
2 Input
— —
Preliminary User's Manual U13420EJ2V0UM00
Recommended Connections of Unused Pins
Independently connect to V
SS0
Independently connect to V
DD0
Independently connect to V
DD0
Independently connect to V
DD0
Independently connect to V
DD0
Connect to V .
DD0
Leave open.
—
Connect to V .
SS0
Directly connect to V or V
SS0 SS1
via a resistor.
or V via a resistor.
SS0
via a resistor.
or V via a resistor.
SS0
or V via a resistor.
SS0
.
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