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Rev. 5.00, 09/03, page 724 of 760
A.3 Treatment of Unused Pins
• When RTC is not used
EXTAL2: Pull up (2.0/1.9/1.8/1.7 V)
XTAL2: Leave unconnected
V
CC
–RTC: Power supply (2.0/1.9/1.8/1.7 V)
V
SS
–RTC: Power supply (0 V)
• When PLL2 is not used
CAP2: Leave unconnected
V
CC
–PLL2: Power supply (2.0/1.9/1.8/1.7 V)
V
SS
–PLL2: Power supply (0 V)
• When on-chip crystal oscillator is not used
XTAL: Leave unconnected
• When EXTAL pin is not used
EXTAL: Pull up (3.3 V)
• When A/D converter is not used
AN[7:0]: Leave unconnected
AV
CC
: Power supply (3.3 V)
AV
SS
: Power supply (0 V)
• When UDI is not used
ASEMD0: Pull up (3.3 V)