PIC17C752-08SLASHCL datasheet(180/328 Pages) MICROCHIP

Part #	PIC17C752-08/CL

Description	High-Performance 8-Bit CMOS EPROM Microcontrollers with 10-bit A/D

PDF	328 Pages

Scroll/Zoom	100%

Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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180 / 328 page

PIC17C7XX

DS30289A-page 180

Figure 16-4 shows the conversion sequence, and the

terms that are used. Acquisition time is the time that the

A/D module’s holding capacitor is connected to the

external voltage level. Then there is the conversion time

of 12 TAD, which is started when the GO bit is set. The

sum of these two times is the sampling time. There is a

minimum acquisition time to ensure that the holding

capacitor is charged to a level that will give the desired

accuracy for the A/D conversion.

FIGURE 16-4: A/D CONVERSION SEQUENCE

Acquisition Time

A/D Conversion Time

A/D Sample Time

When A/D holding capacitor starts to charge.

After A/D conversion, or when new A/D channel is selected

When A/D conversion is started

(setting the GO bit)

A/D conversion complete, result is loaded in ADRES register.

Holding capacitor begins acquiring voltage level on selected

channel ADIF bit is set

PIC17C752-08/CL Datasheet(PDF) 180 Page - Microchip Technology