Rainbow Electronics Atmega169L - Manual (Page 239)

239
ATmega169V/L
2514A–AVR–08/02
Scanning the Analog
Comparator The relevant Comparator signals regarding Boundary-scan are shown in Figure 112.
The Boundary-scan cell from Figure 113 is attached to each of these signals. The sig-
nals are described in Table 104.
The Comparator need not be used for pure connectivity testing, since all analog inputs
are shared with a digital port pin as well.
Figure 112. Analog Comparator
Figure 113. General Boundary-scan cell Used for Signals for Comparator and ADC
ACBG
BANDGAP
REFERENCE
ADC MULTIPLEXER
OUTPUT
ACME
AC_IDLE
ACO
ADCEN
ACD
0
1
D Q D Q
G
0
1
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