PIC16F1503T-I View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16F1503T-I

14-Pin Flash, 8-Bit Microcontrollers

Microchip Technology 

PIC16(L)F1503

TABLE 15-1: ADC CLOCK PERIOD (TAD) VS. DEVICE OPERATING FREQUENCIES

ADC Clock Period (TAD)

Device Frequency (FOSC)

ADC

Clock

Source

ADCS<2:0

>

20 MHz

16 MHz

8 MHz

4 MHz

1 MHz

Fosc/2

Fosc/4

Fosc/8

Fosc/16

Fosc/32

Fosc/64

FRC

Legend:

Note:

000

100 ns

125 ns

250 ns

500 ns

2.0 s

100

200 ns

250 ns

001

400 ns

500 ns

101

800 ns

1.0 s

010

1.6 s

2.0 s

110

3.2 s

4.0 s

x11

1.0-6.0 s

1.0-6.0 s

Shaded cells are outside of recommended range.

500 ns

1.0 s

2.0 s

4.0 s

8.0 s

1.0-6.0 s

1.0 s

2.0 s

4.0 s

8.0 s

16.0 s

1.0-6.0 s

4.0 s

8.0 s

16.0 s

32.0 s

64.0 s

1.0-6.0 s

The TAD period when using the FRC clock source can fall within a specified range, (see TAD parameter).

The TAD period when using the FOSC-based clock source can be configured for a more precise TAD period.

However, the FRC clock source must be used when conversions are to be performed with the device in

Sleep mode.

FIGURE 15-2:

ANALOG-TO-DIGITAL CONVERSION TAD CYCLES

Rev. 10-000035A

7/30/2013

TACQ

THCD

TAD1

TAD2

b9

TAD3 TAD4

b8

b7

Conversion Starts

Holding capacitor disconnected

from analog input (THCD).

Set GO bit

Enable ADC (ADON bit)

and

Select channel (ACS bits)

TAD5 TAD6

b6

b5

TAD7 TAD8

b4

b3

TAD9 TAD10 TAD11

b2

b1

b0

On the following cycle:

ADRESH:ADRESL is loaded,

GO bit is cleared,

ADIF bit is set,

holding capacitor is reconnected to analog input.

 2011-2015 Microchip Technology Inc.

DS40001607D-page 115

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