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Appendix
D.
Treatment of Unused Pins
The treatments of unused pins are listed in table D.1.
Table D.1
Treatment of Unused Pins
Pin Name
Example of Pin Treatment
RES
(Always used as a reset pin)
ETRST
(Always used as a reset pin)
MD2, MD1
(Always used as mode pins)
•
NMI
EXTAL
(Always used as a clock pin)
XTAL
(Always used as a clock pin)
•
Port 1
Port 2
Port 3
Port 4
Port 5
Port 6
Port 8
Port 9
Port A
Port B
Port C
Port D
Port F
Port G
Port H
•
Port 7
•
Port E
Rev. 1.00 May 09, 2008 Page 948 of 954
REJ09B0462-0100
Connect to V
via a pull-up resistor
CC
Connect each pin to V
resistor
Connect each pin to AV
resistor
Connect each pin to V
via a pull-up resistor or to V
CC
via a pull-up resistor or to AV
CC
via a pull-up resistor
CC
via a pull-down
SS
via a pull-down
SS
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