Datasheet

Appendix
Rev. 2.00 Sep. 28, 2009 Page 988 of 994
REJ09B0452-0200
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
• Connect to V
CC
via a pull-up resistor
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 I
Port J
• Connect each pin to V
CC
via a pull-up resistor or to V
SS
via a pull-down
resistor
Port 7
• Connect each pin to AV
CC
via a pull-up resistor or to AV
SS
via a pull-down
resistor
Port E
• Connect each pin to V
CC
via a pull-up resistor