Datasheet

263
2490R–AVR–02/2013
ATmega64(L)
connecting the Oscillator pins from the scan path if not provided. The INTCAP Fuses are not
supported in the scan-chain, so the boundary scan chain cannot make a XTAL Oscillator
requiring internal capacitors to run unless the fuse is correctly programmed.
Scanning the Analog
Comparator
The relevant Comparator signals regarding Boundary-scan are shown in Figure 132. The
Boundary-scan cell from Figure 133 is attached to each of these signals. The signals are
described in Table 103.
The Comparator needs not be used for pure connectivity testing, since all analog inputs are
shared with a digital port pin as well.
Figure 132. Analog Comparator
ACBG
BANDGAP
REFERENCE
ADC MULTIPLEXER
OUTPUT
ACME
AC_IDLE
ACO
ADCEN