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FM3 MB9B500 Series - Microcontrollers - Fujitsu

FM3 MB9B500 Series - Microcontrollers - Fujitsu

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<strong>MB9B500</strong> <strong>Series</strong><br />

(Continued)<br />

102<br />

Analog signal<br />

source<br />

(Equation 1) Ts ( Rin + Rext ) × Cin × 9<br />

Ts : Sampling time<br />

Rin : input resistance of A/D = 0.93kΩ 4.5 AVCC 5.5<br />

input resistance of A/D = 2.04kΩ 2.7 AVCC < 4.5<br />

Cin : input capacity of A/D = 14.5pF 2.7 AVCC 5.5<br />

Rext : Output impedance of external circuit<br />

(Equation 2) Tc = Tcck × 14<br />

Tc : Compare time<br />

Tcck : Comrare clock cycle<br />

Rext<br />

AN0 to AN15<br />

Analog input pin<br />

Rin<br />

Cin<br />

comparator<br />

DS706-00010-1v0-E

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