Datasheet

Section 17 A/D Converter
Rev. 3.00 Sep. 28, 2009 Page 505 of 710
REJ09B0384-0300
Table 17.6 Standard of Analog Pins
Item Min. Max. Unit
Analog input
capacitance
⎯ 20 pF
Acceptable signal
source impedance
⎯ 5 kΩ
20 pF
To A/D converterAN0 to AN7
10 k
Ω
Note: Values are reference values.
Figure 17.10 Analog Input Pin Equivalent Circuit
17.7.7 Note on the Usage in Software Standby Mode
If this LSI enters software standby mode with the A/D conversion enabled, the content of the A/D
converter is retained and about the same amount of analog supply current may flow as that flows
when A/D conversion in progress. If the analog supply current must be reduced in software
standby mode, clear the ADST bit to disable the A/D conversion.