NEC 78K0 Series User Manual page 325

(11) Internal equivalent circuit
The equivalent circuit of the analog input block is shown below.
Table 13-4. Resistance and Capacitance Values of Equivalent Circuit (Reference Values)
Remarks 1. The resistance and capacitance values shown in Table 13-4 are not guaranteed values.
2. n = 0 to 7
CHAPTER 13 A/D CONVERTER
Figure 13-22. Internal Equivalent Circuit of ANIn Pin
ANIn
AV R1
REF
4.0 V ≤ AV ≤ 5.5 V
8.1 kΩ
REF
2.7 V ≤ AV
< 4.0 V 31 kΩ
REF
2.3 V ≤ AV
< 2.7 V 381 kΩ
REF
Preliminary User's Manual U17260EJ3V1UD
R1
C1 C2
C1 C2
8 pF 5 pF
8 pF 5 pF
8 pF 5 pF
325