S6J3350 Datasheet, PDF (241/249 Pages) Cypress Semiconductor – 32-bit Microcontroller Spansion® TraveoTM Family

PRELIMINARY
S6J3350 Series
9.1.5.2 Notes on A/D converters
About the output impedance of an external circuit for analog input
When the external impedance is too high, the analog voltage sampling time may become insufficient. In this case, we recommend
attaching a capacitor (about 0.1 µF) to an analog input pin.
Analog input circuit model
R
Analog input
C
Sampling ON
Comparator
R
C
12-bit A/D
3.9 kiloohms (max)
11.0 pF (max)
Note: Use the numerical values provided here simply as a guide.
(4.5 V ≤ AVCC5 ≤ 5.5 V)
Document Number: 002-10634 Rev.**
Page 241 of 249