S6E2C2 Datasheet, PDF (186/207 Pages) Cypress Semiconductor – 32-bit ARM® Cortex®-M4F FM4 Microcontroller

Analog signal
source
Rext
ANxx
Analog input pin
R_RAiInN
S6E2C2 Series
Comparator
C_Ci_An_IN
(Equation 1) tS ≥ (RAIN + Rext) × CAIN × 9
tS: Sampling time
RAIN: Input resistance of A/D = 1.2 kΩ at 4.5 V ≤ AVCC ≤ 5.5 V
Input resistance of A/D = 1.8 kΩ at 2.7 V ≤ AVCC < 4.5 V
CAIN: Input capacity of A/D = 12.05 pF at 2.7 V ≤ AVCC ≤ 5.5 V
Rext: Output impedance of external circuit
(Equation 2) tC = tCCK × 14
tC: Compare time
tCCK:Compare clock cycle
Document Number: 002-05030 Rev.*A
Page 186 of 207