PIC10LF322T-EMCSQTP datasheet(93/210 Pages) MICROCHIP

93 / 210 page

 2011 Microchip Technology Inc.

Preliminary

DS41585A-page 93

PIC10(L)F320/322

TABLE 15-1:

ADC CLOCK PERIOD (TAD) VS. DEVICE OPERATING FREQUENCIES

FIGURE 15-2:

ANALOG-TO-DIGITAL CONVERSION TAD CYCLES

ADC Clock Period (TAD)

Device Frequency (FOSC)

ADC

Clock Source

ADCS<2:0>

16 MHz

8 MHz

4 MHz

1 MHz

FOSC/2

000

125 ns(1)

250 ns(1)

500 ns(1)

2.0

s

FOSC/4

100

250 ns(1)

500 ns(1)

1.0

s4.0 s

FOSC/8

001

0.5

s(1)

1.0

s2.0 s

8.0

s(2)

FOSC/16

101

1.0

s2.0 s4.0 s

16.0

s(2)

FOSC/32

010

2.0

s4.0 s

8.0

s(2)

32.0

s(2)

FOSC/64

110

4.0

s

8.0

s(2)

16.0

s(2)

64.0

s(2)

FRC

x11

1.0-6.0

s(1,3)

1.0-6.0

s(1,3)

1.0-6.0

s(1,3)

1.0-6.0

s(1,3)

Legend:

Shaded cells are outside of recommended range.

Note

These values violate the minimum required TAD time.

For faster conversion times, the selection of another clock source is recommended.

The ADC clock period (TAD) and total ADC conversion time can be minimized when the ADC clock is derived from the

system clock FOSC. However, the FRC clock source must be used when conversions are to be performed with the

device in Sleep mode.

TAD1 TAD2 TAD3 TAD4 TAD5 TAD6 TAD7 TAD8

Set GO bit

Holding capacitor is disconnected from analog input

TAD9

TCY - TAD

ADRES is loaded, GO bit is cleared,

ADIF bit is set, holding capacitor is

Conversion starts

On the following cycle:

(typically 100 ns)

connected to analog input.

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